build: Release v25.0

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
deps: bump virtio-queue from 0.3.0 to 0.4.0
2026-08-05 02:19:16 +00:00 · 2022-07-07 15:18:55 +01:00 · 2022-07-06 16:57:09 +02:00 · 2022-07-06 14:45:46 +01:00 · 2022-07-06 14:45:46 +01:00 · 2022-07-06 02:35:11 +00:00
147 changed files with 7332 additions and 4487 deletions
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -13,7 +13,7 @@ jobs:
          - stable
          - beta
          - nightly
-          - 1.56
+          - "1.60"
        target:
          - x86_64-unknown-linux-gnu
          - x86_64-unknown-linux-musl
@@ -39,25 +39,28 @@ jobs:
          git checkout $GITHUB_SHA

      - name: Build (default features)
-        run: cargo rustc --bin cloud-hypervisor -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor -- -D warnings

      - name: Build (common + kvm)
-        run: cargo rustc --bin cloud-hypervisor --no-default-features --features "common,kvm"  -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor --no-default-features --features "common,kvm"  -- -D warnings

      - name: Build (default features + tdx)
-        run: cargo rustc --bin cloud-hypervisor --features "tdx" -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor --features "tdx" -- -D warnings

      - name: Build (default features + amx)
-        run: cargo rustc --bin cloud-hypervisor --features "amx" -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor --features "amx" -- -D warnings

      - name: Build (default features + gdb)
-        run: cargo rustc --bin cloud-hypervisor --features "gdb" -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor --features "gdb" -- -D warnings
+
+      - name: Build (default features + guest_debug)
+        run: cargo rustc --locked --bin cloud-hypervisor --features "guest_debug" -- -D warnings

      - name: Build (common + mshv)
-        run: cargo rustc --bin cloud-hypervisor --no-default-features --features "common,mshv"  -- -D warnings
+        run: cargo rustc --locked --bin cloud-hypervisor --no-default-features --features "common,mshv"  -- -D warnings

      - name: Release Build (default features)
-        run: cargo build --all --release --target=${{ matrix.target }}
+        run: cargo build --locked --all --release --target=${{ matrix.target }}

      - name: Check build did not modify any files
        run: test -z "$(git status --porcelain)"
--- a/.github/workflows/quality.yaml
+++ b/.github/workflows/quality.yaml
@@ -34,19 +34,22 @@ jobs:
        run: cargo fmt -- --check

      - name: Clippy (common + kvm)
-        run: cargo clippy --all --all-targets --no-default-features --tests --features "common,kvm" -- -D warnings
+        run: cargo clippy --locked --all --all-targets --no-default-features --tests --features "common,kvm" -- -D warnings

      - name: Clippy (default features)
-        run: cargo clippy --all --all-targets --tests -- -D warnings
+        run: cargo clippy --locked --all --all-targets --tests -- -D warnings

      - name: Clippy (default features + amx)
-        run: cargo clippy --all --all-targets --tests --features "amx" -- -D warnings
+        run: cargo clippy --locked --all --all-targets --tests --features "amx" -- -D warnings

      - name: Clippy (default features + gdb)
-        run: cargo clippy --all --all-targets --tests --features "gdb" -- -D warnings
+        run: cargo clippy --locked --all --all-targets --tests --features "gdb" -- -D warnings
+
+      - name: Clippy (default features + guest_debug)
+        run: cargo clippy --locked --all --all-targets --tests --features "guest_debug" -- -D warnings

      - name: Clippy (common + mshv)
-        run: cargo clippy --all --all-targets --no-default-features --tests --features "common,mshv" -- -D warnings
+        run: cargo clippy --locked --all --all-targets --no-default-features --tests --features "common,mshv" -- -D warnings

      - name: Check build did not modify any files
        run: test -z "$(git status --porcelain)"
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -16,23 +16,23 @@ jobs:
      - name: Install Rust toolchain (x86_64-unknown-linux-gnu)
        uses: actions-rs/toolchain@v1
        with:
-            toolchain: 1.58
+            toolchain: "1.62"
            target: x86_64-unknown-linux-gnu
      - name: Install Rust toolchain (x86_64-unknown-linux-musl)
        uses: actions-rs/toolchain@v1
        with:
-            toolchain: 1.58
+            toolchain: "1.62"
            target: x86_64-unknown-linux-musl
      - name: Build
        uses: actions-rs/cargo@v1
        with:
-            toolchain: 1.58
+            toolchain: "1.62"
            command: build
            args: --all --release --target=x86_64-unknown-linux-gnu
      - name: Static Build
        uses: actions-rs/cargo@v1
        with:
-            toolchain: 1.58
+            toolchain: "1.62"
            command: build
            args: --all --release --target=x86_64-unknown-linux-musl
      - name: Strip cloud-hypervisor binaries
@@ -40,7 +40,7 @@ jobs:
      - name: Install Rust toolchain (aarch64-unknown-linux-musl)
        uses: actions-rs/toolchain@v1
        with:
-            toolchain: 1.58
+            toolchain: "1.62"
            target: aarch64-unknown-linux-musl
            override: true
      - name: Static Build (AArch64)
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@
 **/*.rs.bk
 **/Cargo.lock
 **/rusty-tags.vi
+/rpm/SOURCES
--- a/2
+++ b/2
@@ -0,0 +1,2 @@
+# Add the list of code owners here (using their GitHub username)
+* @cloud-hypervisor/cloud-hypervisor-reviewers
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -2,12 +2,14 @@

 Cloud Hypervisor is an open source project licensed under the [Apache v2
 License](https://opensource.org/licenses/Apache-2.0) and the [BSD 3
-Clause](https://opensource.org/licenses/BSD-3-Clause) license. Contributions
-can be made under either license or both. Individual files contain details of
-their licensing and changes to that file are under the same license unless the
-contribution changes the license of the file. When importing code from a third
-party project (e.g. Firecracker or CrosVM) please respect the license of those
-projects.
+Clause](https://opensource.org/licenses/BSD-3-Clause) license. Individual files
+contain details of their licensing and changes to that file are under the same
+license unless the contribution changes the license of the file. When importing
+code from a third party project (e.g. Firecracker or CrosVM) please respect the
+license of those projects.
+
+New code should be under the [Apache v2
+License](https://opensource.org/licenses/Apache-2.0).

 ## Coding Style

@@ -63,11 +65,9 @@ you want to merge your changes to `cloud-hypervisor`:
 2. Within your fork, create a branch for your contribution.
 3. [Create a pull request](https://help.github.com/articles/creating-a-pull-request-from-a-fork/)
   against the main branch of the Cloud Hypervisor repository.
-4. Add reviewers to your pull request and then work with your reviewers to address
-   any comments and obtain minimum of 2 [maintainers](MAINTAINERS.md) approvals.
-   To update your pull request amend existing commits whenever applicable and
+4. To update your pull request amend existing commits whenever applicable and
   then push the new changes to your pull request branch.
-5. Once the pull request is approved, one of the maintainers will merge it.
+5. Once the pull request is approved it can be integrated.

 ## Issue tracking

--- a/Cargo.lock
+++ b/Cargo.lock
@@ -20,9 +20,9 @@ dependencies = [

 [[package]]
 name = "anyhow"
-version = "1.0.56"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4361135be9122e0870de935d7c439aef945b9f9ddd4199a553b5270b49c82a27"
+checksum = "bb07d2053ccdbe10e2af2995a2f116c1330396493dc1269f6a91d0ae82e19704"

 [[package]]
 name = "api_client"
@@ -50,7 +50,6 @@ dependencies = [
 "linux-loader",
 "log",
 "serde",
- "serde_derive",
 "thiserror",
 "versionize",
 "versionize_derive",
@@ -131,24 +130,33 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"

 [[package]]
 name = "clap"
-version = "3.1.8"
+version = "3.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71c47df61d9e16dc010b55dba1952a57d8c215dbb533fd13cdd13369aac73b1c"
+checksum = "190814073e85d238f31ff738fcb0bf6910cedeb73376c87cd69291028966fd83"
 dependencies = [
 "atty",
 "bitflags",
+ "clap_lex",
 "indexmap",
- "lazy_static",
- "os_str_bytes",
+ "once_cell",
 "strsim",
 "termcolor",
 "terminal_size",
 "textwrap",
 ]

+[[package]]
+name = "clap_lex"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"
+dependencies = [
+ "os_str_bytes",
+]
+
 [[package]]
 name = "cloud-hypervisor"
-version = "23.0.0"
+version = "25.0.0"
 dependencies = [
 "anyhow",
 "api_client",
@@ -157,10 +165,10 @@ dependencies = [
 "epoll",
 "event_monitor",
 "hypervisor",
- "lazy_static",
 "libc",
 "log",
 "net_util",
+ "once_cell",
 "option_parser",
 "seccompiler",
 "serde_json",
@@ -198,6 +206,7 @@ dependencies = [
 "bitflags",
 "byteorder",
 "epoll",
+ "hypervisor",
 "libc",
 "log",
 "versionize",
@@ -257,7 +266,6 @@ version = "0.1.0"
 dependencies = [
 "libc",
 "serde",
- "serde_derive",
 "serde_json",
 ]

@@ -269,9 +277,9 @@ checksum = "b643857cf70949306b81d7e92cb9d47add673868edac9863c4a49c42feaf3f1e"

 [[package]]
 name = "gdbstub"
-version = "0.6.1"
+version = "0.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fa2ca5d6b045de372cef3991f873389b421b4cabcfbe52f7787fae8b8b37906"
+checksum = "1c1f9371c87c11642ee94dcf92cb48b1484ba250b8e8bff3df71c28651f3f4e7"
 dependencies = [
 "bitflags",
 "cfg-if",
@@ -283,9 +291,9 @@ dependencies = [

 [[package]]
 name = "gdbstub_arch"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51dc4b5718ac76d21e8605c0966dd32d80273b89b11e6cfef467b04e45934d37"
+checksum = "c24f469ba9556c5a063d6df35a8a338025fccf96ecae44f330a156b686f7a268"
 dependencies = [
 "gdbstub",
 "num-traits",
@@ -293,9 +301,9 @@ dependencies = [

 [[package]]
 name = "getrandom"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9be70c98951c83b8d2f8f60d7065fa6d5146873094452a1008da8c2f1e4205ad"
+checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
 dependencies = [
 "cfg-if",
 "libc",
@@ -310,9 +318,9 @@ checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"

 [[package]]
 name = "hashbrown"
-version = "0.11.2"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
+checksum = "db0d4cf898abf0081f964436dc980e96670a0f36863e4b83aaacdb65c9d7ccc3"

 [[package]]
 name = "hermit-abi"
@@ -344,7 +352,6 @@ dependencies = [
 "mshv-bindings",
 "mshv-ioctls",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "vm-memory",
@@ -363,9 +370,9 @@ dependencies = [

 [[package]]
 name = "indexmap"
-version = "1.8.1"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f647032dfaa1f8b6dc29bd3edb7bbef4861b8b8007ebb118d6db284fd59f6ee"
+checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
 dependencies = [
 "autocfg",
 "hashbrown",
@@ -392,18 +399,18 @@ dependencies = [

 [[package]]
 name = "ipnetwork"
-version = "0.18.0"
+version = "0.19.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4088d739b183546b239688ddbc79891831df421773df95e236daf7867866d355"
+checksum = "1f84f1612606f3753f205a4e9a2efd6fe5b4c573a6269b2cc6c3003d44a0d127"
 dependencies = [
 "serde",
 ]

 [[package]]
 name = "itoa"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
+checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"

 [[package]]
 name = "kvm-bindings"
@@ -418,7 +425,7 @@ dependencies = [
 [[package]]
 name = "kvm-ioctls"
 version = "0.11.0"
-source = "git+https://github.com/rust-vmm/kvm-ioctls?branch=main#1e03e29cdfbb0cb108a98de7a78045a5a517f18e"
+source = "git+https://github.com/rust-vmm/kvm-ioctls?branch=main#ccf0bda07485b2433616de998c000aa5f04ce806"
 dependencies = [
 "kvm-bindings",
 "libc",
@@ -433,9 +440,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"

 [[package]]
 name = "libc"
-version = "0.2.123"
+version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb691a747a7ab48abc15c5b42066eaafde10dc427e3b6ee2a1cf43db04c763bd"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"

 [[package]]
 name = "libssh2-sys"
@@ -453,9 +460,9 @@ dependencies = [

 [[package]]
 name = "libz-sys"
-version = "1.1.5"
+version = "1.1.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f35facd4a5673cb5a48822be2be1d4236c1c99cb4113cab7061ac720d5bf859"
+checksum = "9702761c3935f8cc2f101793272e202c72b99da8f4224a19ddcf1279a6450bbf"
 dependencies = [
 "cc",
 "libc",
@@ -484,9 +491,9 @@ dependencies = [

 [[package]]
 name = "log"
-version = "0.4.16"
+version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6389c490849ff5bc16be905ae24bc913a9c8892e19b2341dbc175e14c341c2b8"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
 "cfg-if",
 ]
@@ -499,14 +506,14 @@ checksum = "0ca88d725a0a943b096803bd34e73a4437208b6077654cc4ecb2947a5f91618d"

 [[package]]
 name = "memchr"
-version = "2.4.1"
+version = "2.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
+checksum = "2dffe52ecf27772e601905b7522cb4ef790d2cc203488bbd0e2fe85fcb74566d"

 [[package]]
 name = "micro_http"
 version = "0.1.0"
-source = "git+https://github.com/firecracker-microvm/micro-http?branch=main#a730d86940081ad044cdfbc1285c1db6d3048392"
+source = "git+https://github.com/firecracker-microvm/micro-http?branch=main#863b0370ba7e57f7df5b908ada9e5b44809ccae9"
 dependencies = [
 "libc",
 "vmm-sys-util",
@@ -515,7 +522,7 @@ dependencies = [
 [[package]]
 name = "mshv-bindings"
 version = "0.1.0"
-source = "git+https://github.com/rust-vmm/mshv?branch=main#75cf309d566c3d9ba91e81582a7864032ecc5bbb"
+source = "git+https://github.com/rust-vmm/mshv?branch=main#7ac1b80bff7220171c9a626b23b51620ca774468"
 dependencies = [
 "libc",
 "serde",
@@ -527,7 +534,7 @@ dependencies = [
 [[package]]
 name = "mshv-ioctls"
 version = "0.1.0"
-source = "git+https://github.com/rust-vmm/mshv?branch=main#75cf309d566c3d9ba91e81582a7864032ecc5bbb"
+source = "git+https://github.com/rust-vmm/mshv?branch=main#7ac1b80bff7220171c9a626b23b51620ca774468"
 dependencies = [
 "libc",
 "mshv-bindings",
@@ -547,11 +554,12 @@ version = "0.1.0"
 dependencies = [
 "epoll",
 "getrandom",
- "lazy_static",
 "libc",
 "log",
 "net_gen",
+ "once_cell",
 "pnet",
+ "pnet_datalink",
 "rate_limiter",
 "serde",
 "serde_json",
@@ -565,28 +573,40 @@ dependencies = [
 ]

 [[package]]
-name = "num-traits"
-version = "0.2.14"
+name = "no-std-net"
+version = "0.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
+checksum = "43794a0ace135be66a25d3ae77d41b91615fb68ae937f904090203e81f755b65"
+
+[[package]]
+name = "num-traits"
+version = "0.2.15"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "578ede34cf02f8924ab9447f50c28075b4d3e5b269972345e7e0372b38c6cdcd"
 dependencies = [
 "autocfg",
 ]

 [[package]]
-name = "openssl-src"
-version = "111.18.0+1.1.1n"
+name = "once_cell"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7897a926e1e8d00219127dc020130eca4292e5ca666dd592480d72c3eca2ff6c"
+checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
+
+[[package]]
+name = "openssl-src"
+version = "111.22.0+1.1.1q"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8f31f0d509d1c1ae9cada2f9539ff8f37933831fd5098879e482aa687d659853"
 dependencies = [
 "cc",
 ]

 [[package]]
 name = "openssl-sys"
-version = "0.9.72"
+version = "0.9.74"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7e46109c383602735fa0a2e48dd2b7c892b048e1bf69e5c3b1d804b7d9c203cb"
+checksum = "835363342df5fba8354c5b453325b110ffd54044e588c539cf2f20a8014e4cb1"
 dependencies = [
 "autocfg",
 "cc",
@@ -602,12 +622,9 @@ version = "0.1.0"

 [[package]]
 name = "os_str_bytes"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
-dependencies = [
- "memchr",
-]
+checksum = "21326818e99cfe6ce1e524c2a805c189a99b5ae555a35d19f9a284b427d86afa"

 [[package]]
 name = "parking_lot"
@@ -650,7 +667,6 @@ dependencies = [
 "libc",
 "log",
 "serde",
- "serde_derive",
 "thiserror",
 "versionize",
 "versionize_derive",
@@ -671,7 +687,6 @@ dependencies = [
 "clap",
 "dirs",
 "serde",
- "serde_derive",
 "serde_json",
 "test_infra",
 "thiserror",
@@ -686,29 +701,30 @@ checksum = "1df8c4ec4b0627e53bdf214615ad287367e482558cf84b109250b37464dc03ae"

 [[package]]
 name = "pnet"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8750e073f82219c01e771133c64718d7685aef922da8a0d430a46aed05b6341a"
+checksum = "0caaf5b11fd907ff15cf14a4477bfabca4b37ab9e447a4f8dead969a59cdafad"
 dependencies = [
- "ipnetwork",
 "pnet_base",
 "pnet_datalink",
 "pnet_packet",
- "pnet_sys",
 "pnet_transport",
 ]

 [[package]]
 name = "pnet_base"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8205fe084bd43a3af79b3155c19feddd62e733640498842e631a2ffe107d1538"
+checksum = "f9d3a993d49e5fd5d4d854d6999d4addca1f72d86c65adf224a36757161c02b6"
+dependencies = [
+ "no-std-net",
+]

 [[package]]
 name = "pnet_datalink"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6f85aef5e52e22ff06b1b11f2eb6d52959a9e0ecad3cb3f5cc2d78cadc077f0e"
+checksum = "e466faf03a98ad27f6e15cd27a2b7cc89e73e640a43527742977bc503c37f8aa"
 dependencies = [
 "ipnetwork",
 "libc",
@@ -719,9 +735,9 @@ dependencies = [

 [[package]]
 name = "pnet_macros"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "98cc3af95fed6dc318dfede3e81320f96ad5e237c6f7c4688108b19c8e67432d"
+checksum = "48dd52a5211fac27e7acb14cfc9f30ae16ae0e956b7b779c8214c74559cef4c3"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -731,18 +747,18 @@ dependencies = [

 [[package]]
 name = "pnet_macros_support"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "feaba58ba96abb218ec584d6caf0d3ff48922df05dbbeb1560553c197091b29e"
+checksum = "89de095dc7739349559913aed1ef6a11e73ceade4897dadc77c5e09de6740750"
 dependencies = [
 "pnet_base",
 ]

 [[package]]
 name = "pnet_packet"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f246edaaf1aaf82072d4cd38ee18bcc5dfc0464093f9ca39e4ac5962d68cf9d4"
+checksum = "bc3b5111e697c39c8b9795b9fdccbc301ab696699e88b9ea5a4e4628978f495f"
 dependencies = [
 "glob",
 "pnet_base",
@@ -752,9 +768,9 @@ dependencies = [

 [[package]]
 name = "pnet_sys"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "028c87a5e3a48fc07df099a2025f2ef16add5993712e1494ba69a6707ee7ed06"
+checksum = "328e231f0add6d247d82421bf3790b4b33b39c8930637f428eef24c4c6a90805"
 dependencies = [
 "libc",
 "winapi",
@@ -762,9 +778,9 @@ dependencies = [

 [[package]]
 name = "pnet_transport"
-version = "0.29.0"
+version = "0.31.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "950f2a7961e19d22e19e84ff0a6e0955013185fe149673499662633d02b41b7a"
+checksum = "ff597185e6f1f5671b3122e4dba892a1c73e17c17e723d7669bd9299cbe7f124"
 dependencies = [
 "libc",
 "pnet_base",
@@ -774,11 +790,11 @@ dependencies = [

 [[package]]
 name = "proc-macro2"
-version = "1.0.37"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
+checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]

 [[package]]
@@ -794,9 +810,9 @@ dependencies = [

 [[package]]
 name = "quote"
-version = "1.0.18"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
+checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
 dependencies = [
 "proc-macro2",
 ]
@@ -832,9 +848,9 @@ dependencies = [

 [[package]]
 name = "regex"
-version = "1.5.5"
+version = "1.6.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a11647b6b25ff05a515cb92c365cec08801e83423a235b51e231e1808747286"
+checksum = "4c4eb3267174b8c6c2f654116623910a0fef09c4753f8dd83db29c48a0df988b"
 dependencies = [
 "aho-corasick",
 "memchr",
@@ -843,15 +859,15 @@ dependencies = [

 [[package]]
 name = "regex-syntax"
-version = "0.6.25"
+version = "0.6.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f497285884f3fcff424ffc933e56d7cbca511def0c9831a7f9b5f6153e3cc89b"
+checksum = "a3f87b73ce11b1619a3c6332f45341e0047173771e8b8b73f87bfeefb7b56244"

 [[package]]
 name = "remain"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70ba1e78fa68412cb93ef642fd4d20b9a941be49ee9333875ebaf13112673ea7"
+checksum = "0c35270ea384ac1762895831cc8acb96f171468e52cec82ed9186f9416209fa4"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -869,9 +885,9 @@ dependencies = [

 [[package]]
 name = "ryu"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73b4b750c782965c211b42f022f59af1fbceabdd026623714f104152f1ec149f"
+checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695"

 [[package]]
 name = "scopeguard"
@@ -890,21 +906,24 @@ dependencies = [

 [[package]]
 name = "semver"
-version = "1.0.7"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d65bd28f48be7196d222d95b9243287f48d27aca604e08497513019ff0502cc4"
+checksum = "a2333e6df6d6598f2b1974829f853c2b4c5f4a6e503c10af918081aa6f8564e1"

 [[package]]
 name = "serde"
-version = "1.0.136"
+version = "1.0.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce31e24b01e1e524df96f1c2fdd054405f8d7376249a5110886fb4b658484789"
+checksum = "1578c6245786b9d168c5447eeacfb96856573ca56c9d68fdcf394be134882a47"
+dependencies = [
+ "serde_derive",
+]

 [[package]]
 name = "serde_derive"
-version = "1.0.136"
+version = "1.0.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08597e7152fcd306f41838ed3e37be9eaeed2b61c42e2117266a554fab4662f9"
+checksum = "023e9b1467aef8a10fb88f25611870ada9800ef7e22afce356bb0d2387b6f27c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -913,9 +932,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.79"
+version = "1.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95"
+checksum = "82c2c1fdcd807d1098552c5b9a36e425e42e9fbd7c6a37a8425f390f781f7fa7"
 dependencies = [
 "itoa",
 "ryu",
@@ -924,9 +943,9 @@ dependencies = [

 [[package]]
 name = "signal-hook"
-version = "0.3.13"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "647c97df271007dcea485bb74ffdb57f2e683f1306c854f468a0c244badabf2d"
+checksum = "a253b5e89e2698464fc26b545c9edceb338e18a89effeeecfea192c3025be29d"
 dependencies = [
 "libc",
 "signal-hook-registry",
@@ -943,9 +962,9 @@ dependencies = [

 [[package]]
 name = "smallvec"
-version = "1.8.0"
+version = "1.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f2dd574626839106c320a323308629dcb1acfc96e32a8cba364ddc61ac23ee83"
+checksum = "2fd0db749597d91ff862fd1d55ea87f7855a744a8425a64695b6fca237d1dad1"

 [[package]]
 name = "ssh2"
@@ -973,13 +992,13 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"

 [[package]]
 name = "syn"
-version = "1.0.91"
+version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
+checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
 dependencies = [
 "proc-macro2",
 "quote",
- "unicode-xid",
+ "unicode-ident",
 ]

 [[package]]
@@ -1019,8 +1038,8 @@ version = "0.1.0"
 dependencies = [
 "dirs",
 "epoll",
- "lazy_static",
 "libc",
+ "once_cell",
 "ssh2",
 "vmm-sys-util",
 "wait-timeout",
@@ -1037,18 +1056,18 @@ dependencies = [

 [[package]]
 name = "thiserror"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
+checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
 dependencies = [
 "thiserror-impl",
 ]

 [[package]]
 name = "thiserror-impl"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
+checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -1056,16 +1075,22 @@ dependencies = [
 ]

 [[package]]
-name = "unicode-xid"
-version = "0.2.2"
+name = "unicode-ident"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
+checksum = "5bd2fe26506023ed7b5e1e315add59d6f584c621d037f9368fea9cfb988f368c"
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "957e51f3646910546462e67d5f7599b9e4fb8acdd304b087a6494730f9eebf04"

 [[package]]
 name = "uuid"
-version = "0.8.2"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
+checksum = "dd6469f4314d5f1ffec476e05f17cc9a78bc7a27a6a857842170bdf8d6f98d2f"
 dependencies = [
 "getrandom",
 ]
@@ -1115,7 +1140,7 @@ dependencies = [
 [[package]]
 name = "vfio-ioctls"
 version = "0.1.0"
-source = "git+https://github.com/rust-vmm/vfio?branch=main#f75a77c1ab6349c105bc1462a65508726b4c2e0f"
+source = "git+https://github.com/rust-vmm/vfio?branch=main#38272d3f06bbc0b4b3cfa3f5da07fd1c1c89e4d1"
 dependencies = [
 "byteorder",
 "kvm-bindings",
@@ -1174,9 +1199,9 @@ dependencies = [

 [[package]]
 name = "vhost-user-backend"
-version = "0.3.0"
+version = "0.5.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1490f2028d4f119b2292efe218b5f8cfc6471f039b53b6a6eb5d9513e964facc"
+checksum = "3eeb6723bbee20dbc2db95c575941922fb96e77eb41786ecd1c8c03348709c4c"
 dependencies = [
 "libc",
 "log",
@@ -1249,7 +1274,6 @@ dependencies = [
 "rate_limiter",
 "seccompiler",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "versionize",
@@ -1267,9 +1291,9 @@ dependencies = [

 [[package]]
 name = "virtio-queue"
-version = "0.2.0"
+version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3785325315e6496fa88673842ee6cd198b9658e88e8b0e1ad48a5dc818b221dc"
+checksum = "519c0a333c871650269cba303bc108075d52a0c0d64f9b91fae61829b53725af"
 dependencies = [
 "log",
 "vm-memory",
@@ -1290,8 +1314,8 @@ name = "vm-device"
 version = "0.1.0"
 dependencies = [
 "anyhow",
+ "hypervisor",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "vfio-ioctls",
@@ -1306,9 +1330,9 @@ source = "git+https://github.com/rust-vmm/vm-fdt?branch=main#ca35d96191f8232bd7a

 [[package]]
 name = "vm-memory"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "339d4349c126fdcd87e034631d7274370cf19eb0e87b33166bcd956589fc72c5"
+checksum = "767ed8aaebbff902e02e6d3749dc2baef55e46565f8a6414a065e5baee4b4a81"
 dependencies = [
 "arc-swap",
 "libc",
@@ -1321,7 +1345,6 @@ version = "0.1.0"
 dependencies = [
 "anyhow",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "versionize",
@@ -1356,18 +1379,17 @@ dependencies = [
 "gdbstub",
 "gdbstub_arch",
 "hypervisor",
- "lazy_static",
 "libc",
 "linux-loader",
 "log",
 "micro_http",
 "net_util",
+ "once_cell",
 "option_parser",
 "pci",
 "qcow",
 "seccompiler",
 "serde",
- "serde_derive",
 "serde_json",
 "signal-hook",
 "thiserror",
@@ -1410,9 +1432,9 @@ dependencies = [

 [[package]]
 name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
 name = "winapi"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "cloud-hypervisor"
-version = "23.0.0"
+version = "25.0.0"
 authors = ["The Cloud Hypervisor Authors"]
 edition = "2021"
 default-run = "cloud-hypervisor"
@@ -10,31 +10,31 @@ description = "Open source Virtual Machine Monitor (VMM) that runs on top of KVM
 homepage = "https://github.com/cloud-hypervisor/cloud-hypervisor"
 # Minimum buildable version:
 # Keep in sync with version in .github/workflows/build.yaml
-rust-version = "1.56"
+rust-version = "1.60"

 [profile.release]
 lto = true

 [dependencies]
-anyhow = "1.0.56"
+anyhow = "1.0.58"
 api_client = { path = "api_client" }
-clap = { version = "3.1.8", features = ["wrap_help","cargo"] }
+clap = { version = "3.2.8", features = ["wrap_help","cargo"] }
 epoll = "4.3.1"
 event_monitor = { path = "event_monitor" }
 hypervisor = { path = "hypervisor" }
-libc = "0.2.123"
-log = { version = "0.4.16", features = ["std"] }
+libc = "0.2.126"
+log = { version = "0.4.17", features = ["std"] }
 option_parser = { path = "option_parser" }
 seccompiler = "0.2.0"
-serde_json = "1.0.79"
-signal-hook = "0.3.13"
-thiserror = "1.0.30"
+serde_json = "1.0.82"
+signal-hook = "0.3.14"
+thiserror = "1.0.31"
 vmm = { path = "vmm" }
 vmm-sys-util = "0.9.0"
-vm-memory = "0.7.0"
+vm-memory = "0.8.0"

 [build-dependencies]
-clap = { version = "3.1.8", features = ["cargo"] }
+clap = { version = "3.2.8", features = ["cargo"] }

 # List of patched crates
 [patch.crates-io]
@@ -44,9 +44,9 @@ versionize_derive = { git = "https://github.com/cloud-hypervisor/versionize_deri

 [dev-dependencies]
 dirs = "4.0.0"
-lazy_static= "1.4.0"
 net_util = { path = "net_util" }
-serde_json = "1.0.79"
+once_cell = "1.13.0"
+serde_json = "1.0.82"
 test_infra = { path = "test_infra" }
 wait-timeout = "0.2.0"

@@ -58,6 +58,7 @@ amx = ["vmm/amx"]
 cmos = ["vmm/cmos"]
 fwdebug = ["vmm/fwdebug"]
 gdb = ["vmm/gdb"]
+guest_debug = ["vmm/guest_debug"]
 kvm = ["vmm/kvm"]
 mshv = ["vmm/mshv"]
 tdx = ["vmm/tdx"]
--- a/24
+++ b/24
@@ -23,6 +23,19 @@ pipeline{
 						}
 					}
 				}
+				stage ('Check for fuzzer cargo files only changes') {
+					when {
+						expression {
+							return fuzzCargoFileOnly()
+						}
+					}
+					steps {
+						script {
+							runWorkers = false
+							echo "Fuzzer cargo files only changes, no need to run the CI"
+						}
+					}
+				}
 				stage ('Check for RFC/WIP builds') {
 					when {
  						changeRequest comparator: 'REGEXP', title: '.*(rfc|RFC|wip|WIP).*'
@@ -402,3 +415,14 @@ def boolean docsFileOnly() {
        script: "git diff --name-only origin/${env.CHANGE_TARGET}... | grep -v '\\.md'"
    ) != 0
 }
+
+def boolean fuzzCargoFileOnly() {
+    if (env.CHANGE_TARGET == null) {
+        return false;
+    }
+
+    return sh(
+        returnStatus: true,
+        script: "git diff --name-only origin/${env.CHANGE_TARGET}... | grep -v -E 'fuzz\\/Cargo.(toml|lock)'"
+    ) != 0
+}
--- a/README.md
+++ b/README.md
@@ -88,12 +88,10 @@ Hypervisor. Here, all the steps are based on Ubuntu, for other Linux
 distributions please replace the package manager and package name.

 ```shell
-# Install git
-$ sudo apt install git
+# Install build-essential, git, and qemu-img
+$ sudo apt install git build-essential qemu-img
 # Install rust tool chain
 $ curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
-# Install build-essential
-$ sudo apt install build-essential
 # If you want to build statically linked binary please add musl target
 $ rustup target add x86_64-unknown-linux-musl
 ```
@@ -168,7 +166,7 @@ cloud image. Here we will use a Ubuntu image:
 $ pushd $CLOUDH
 $ wget https://cloud-images.ubuntu.com/focal/current/focal-server-cloudimg-amd64.img
 $ qemu-img convert -p -f qcow2 -O raw focal-server-cloudimg-amd64.img focal-server-cloudimg-amd64.raw
-$ wget https://github.com/cloud-hypervisor/rust-hypervisor-firmware/releases/download/0.3.2/hypervisor-fw
+$ wget https://github.com/cloud-hypervisor/rust-hypervisor-firmware/releases/download/0.4.0/hypervisor-fw
 $ popd
 ```

@@ -291,6 +289,8 @@ As of 2022-04-05, the following cloud images are supported:
 Direct kernel boot to userspace should work with a rootfs from most
 distributions.

+Further details can be found in the [release documentation](docs/releases.md).
+
 ## Hot Plug

 Cloud Hypervisor supports hotplug of CPUs, passthrough devices (VFIO),
--- a/acpi_tables/Cargo.toml
+++ b/acpi_tables/Cargo.toml
@@ -5,4 +5,4 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2021"

 [dependencies]
-vm-memory = "0.7.0"
+vm-memory = "0.8.0"
--- a/acpi_tables/src/aml.rs
+++ b/acpi_tables/src/aml.rs
@@ -68,7 +68,7 @@ impl Aml for Path {
        };

        for part in self.name_parts.clone().iter_mut() {
-            bytes.extend_from_slice(&part.to_vec());
+            bytes.extend_from_slice(part.as_ref());
        }
    }
 }
--- a/arch/Cargo.toml
+++ b/arch/Cargo.toml
@@ -10,18 +10,17 @@ tdx = []

 [dependencies]
 acpi_tables = { path = "../acpi_tables" }
-anyhow = "1.0.56"
+anyhow = "1.0.58"
 byteorder = "1.4.3"
 hypervisor = { path = "../hypervisor" }
-libc = "0.2.123"
+libc = "0.2.126"
 linux-loader = { version = "0.4.0", features = ["elf", "bzimage", "pe"] }
-log = "0.4.16"
-serde = { version = "1.0.136", features = ["rc"] }
-serde_derive = "1.0.136"
-thiserror = "1.0.30"
+log = "0.4.17"
+serde = { version = "1.0.138", features = ["rc", "derive"] }
+thiserror = "1.0.31"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"
-vm-memory = { version = "0.7.0", features = ["backend-mmap", "backend-bitmap"] }
+vm-memory = { version = "0.8.0", features = ["backend-mmap", "backend-bitmap"] }
 vm-migration = { path = "../vm-migration" }
 vmm-sys-util = { version = "0.9.0", features = ["with-serde"] }

--- a/arch/src/aarch64/fdt.rs
+++ b/arch/src/aarch64/fdt.rs
@@ -8,17 +8,18 @@

 use crate::{NumaNodes, PciSpaceInfo};
 use byteorder::{BigEndian, ByteOrder};
+use hypervisor::arch::aarch64::gic::Vgic;
 use std::cmp;
 use std::collections::HashMap;
 use std::ffi::CStr;
 use std::fmt::Debug;
 use std::result;
 use std::str;
+use std::sync::{Arc, Mutex};

 use super::super::DeviceType;
 use super::super::GuestMemoryMmap;
 use super::super::InitramfsConfig;
-use super::gic::GicDevice;
 use super::layout::{
    IRQ_BASE, MEM_32BIT_DEVICES_SIZE, MEM_32BIT_DEVICES_START, MEM_PCI_IO_SIZE, MEM_PCI_IO_START,
    PCI_HIGH_BASE, PCI_MMIO_CONFIG_SIZE_PER_SEGMENT,
@@ -90,7 +91,7 @@ pub fn create_fdt<T: DeviceInfoForFdt + Clone + Debug, S: ::std::hash::BuildHash
    vcpu_mpidr: Vec<u64>,
    vcpu_topology: Option<(u8, u8, u8)>,
    device_info: &HashMap<(DeviceType, String), T, S>,
-    gic_device: &dyn GicDevice,
+    gic_device: &Arc<Mutex<dyn Vgic>>,
    initrd: &Option<InitramfsConfig>,
    pci_space_info: &[PciSpaceInfo],
    numa_nodes: &NumaNodes,
@@ -315,18 +316,18 @@ fn create_chosen_node(
    Ok(())
 }

-fn create_gic_node(fdt: &mut FdtWriter, gic_device: &dyn GicDevice) -> FdtWriterResult<()> {
-    let gic_reg_prop = gic_device.device_properties();
+fn create_gic_node(fdt: &mut FdtWriter, gic_device: &Arc<Mutex<dyn Vgic>>) -> FdtWriterResult<()> {
+    let gic_reg_prop = gic_device.lock().unwrap().device_properties();

    let intc_node = fdt.begin_node("intc")?;

-    fdt.property_string("compatible", gic_device.fdt_compatibility())?;
+    fdt.property_string("compatible", gic_device.lock().unwrap().fdt_compatibility())?;
    fdt.property_null("interrupt-controller")?;
    // "interrupt-cells" field specifies the number of cells needed to encode an
    // interrupt source. The type shall be a <u32> and the value shall be 3 if no PPI affinity description
    // is required.
    fdt.property_u32("#interrupt-cells", 3)?;
-    fdt.property_array_u64("reg", gic_reg_prop)?;
+    fdt.property_array_u64("reg", &gic_reg_prop)?;
    fdt.property_u32("phandle", GIC_PHANDLE)?;
    fdt.property_u32("#address-cells", 2)?;
    fdt.property_u32("#size-cells", 2)?;
@@ -334,18 +335,18 @@ fn create_gic_node(fdt: &mut FdtWriter, gic_device: &dyn GicDevice) -> FdtWriter

    let gic_intr_prop = [
        GIC_FDT_IRQ_TYPE_PPI,
-        gic_device.fdt_maint_irq(),
+        gic_device.lock().unwrap().fdt_maint_irq(),
        IRQ_TYPE_LEVEL_HI,
    ];
    fdt.property_array_u32("interrupts", &gic_intr_prop)?;

-    if gic_device.msi_compatible() {
+    if gic_device.lock().unwrap().msi_compatible() {
        let msic_node = fdt.begin_node("msic")?;
-        fdt.property_string("compatible", gic_device.msi_compatibility())?;
+        fdt.property_string("compatible", gic_device.lock().unwrap().msi_compatibility())?;
        fdt.property_null("msi-controller")?;
        fdt.property_u32("phandle", MSI_PHANDLE)?;
-        let msi_reg_prop = gic_device.msi_properties();
-        fdt.property_array_u64("reg", msi_reg_prop)?;
+        let msi_reg_prop = gic_device.lock().unwrap().msi_properties();
+        fdt.property_array_u64("reg", &msi_reg_prop)?;
        fdt.end_node(msic_node)?;
    }

--- a/arch/src/aarch64/gic/gicv3.rs
+++ b/arch/src/aarch64/gic/gicv3.rs
@@ -1,262 +0,0 @@
-// Copyright 2021 Arm Limited (or its affiliates). All rights reserved.
-// Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-//
-// This file implements the GicV3 device.
-
-pub mod kvm {
-    use crate::aarch64::gic::dist_regs::{get_dist_regs, read_ctlr, set_dist_regs, write_ctlr};
-    use crate::aarch64::gic::icc_regs::{get_icc_regs, set_icc_regs};
-    use crate::aarch64::gic::kvm::{save_pending_tables, KvmGicDevice};
-    use crate::aarch64::gic::redist_regs::{
-        construct_gicr_typers, get_redist_regs, set_redist_regs,
-    };
-    use crate::aarch64::gic::GicDevice;
-    use crate::layout;
-    use anyhow::anyhow;
-    use hypervisor::kvm::kvm_bindings;
-    use hypervisor::CpuState;
-    use std::any::Any;
-    use std::convert::TryInto;
-    use std::sync::Arc;
-    use std::{boxed::Box, result};
-    use versionize::{VersionMap, Versionize, VersionizeResult};
-    use versionize_derive::Versionize;
-    use vm_memory::Address;
-    use vm_migration::{
-        Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable,
-        VersionMapped,
-    };
-
-    /// Errors thrown while saving/restoring the GICv3.
-    #[derive(Debug)]
-    pub enum Error {
-        /// Error in saving RDIST pending tables into guest RAM.
-        SavePendingTables(crate::aarch64::gic::Error),
-        /// Error in saving GIC distributor registers.
-        SaveDistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC distributor registers.
-        RestoreDistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC distributor control registers.
-        SaveDistributorCtrlRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC distributor control registers.
-        RestoreDistributorCtrlRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC redistributor registers.
-        SaveRedistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC redistributor registers.
-        RestoreRedistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC CPU interface registers.
-        SaveIccRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC CPU interface registers.
-        RestoreIccRegisters(crate::aarch64::gic::Error),
-    }
-
-    type Result<T> = result::Result<T, Error>;
-
-    pub struct KvmGicV3 {
-        /// The hypervisor agnostic device for the GicV3
-        device: Arc<dyn hypervisor::Device>,
-
-        /// Vector holding values of GICR_TYPER for each vCPU
-        gicr_typers: Vec<u64>,
-
-        /// GIC device properties, to be used for setting up the fdt entry
-        properties: [u64; 4],
-
-        /// Number of CPUs handled by the device
-        vcpu_count: u64,
-    }
-
-    #[derive(Versionize)]
-    pub struct Gicv3State {
-        dist: Vec<u32>,
-        rdist: Vec<u32>,
-        icc: Vec<u32>,
-        // special register that enables interrupts and affinity routing
-        gicd_ctlr: u32,
-    }
-
-    impl VersionMapped for Gicv3State {}
-
-    impl KvmGicV3 {
-        // Device trees specific constants
-        pub const ARCH_GIC_V3_MAINT_IRQ: u32 = 9;
-
-        /// Get the address of the GIC distributor.
-        pub fn get_dist_addr() -> u64 {
-            layout::GIC_V3_DIST_START.raw_value()
-        }
-
-        /// Get the size of the GIC distributor.
-        pub fn get_dist_size() -> u64 {
-            layout::GIC_V3_DIST_SIZE
-        }
-
-        /// Get the address of the GIC redistributors.
-        pub fn get_redists_addr(vcpu_count: u64) -> u64 {
-            KvmGicV3::get_dist_addr() - KvmGicV3::get_redists_size(vcpu_count)
-        }
-
-        /// Get the size of the GIC redistributors.
-        pub fn get_redists_size(vcpu_count: u64) -> u64 {
-            vcpu_count * layout::GIC_V3_REDIST_SIZE
-        }
-
-        /// Save the state of GIC.
-        fn state(&self, gicr_typers: &[u64]) -> Result<Gicv3State> {
-            let gicd_ctlr =
-                read_ctlr(self.device()).map_err(Error::SaveDistributorCtrlRegisters)?;
-
-            let dist_state =
-                get_dist_regs(self.device()).map_err(Error::SaveDistributorRegisters)?;
-
-            let rdist_state = get_redist_regs(self.device(), gicr_typers)
-                .map_err(Error::SaveRedistributorRegisters)?;
-
-            let icc_state =
-                get_icc_regs(self.device(), gicr_typers).map_err(Error::SaveIccRegisters)?;
-
-            Ok(Gicv3State {
-                dist: dist_state,
-                rdist: rdist_state,
-                icc: icc_state,
-                gicd_ctlr,
-            })
-        }
-
-        /// Restore the state of GIC.
-        fn set_state(&mut self, gicr_typers: &[u64], state: &Gicv3State) -> Result<()> {
-            write_ctlr(self.device(), state.gicd_ctlr)
-                .map_err(Error::RestoreDistributorCtrlRegisters)?;
-
-            set_dist_regs(self.device(), &state.dist)
-                .map_err(Error::RestoreDistributorRegisters)?;
-
-            set_redist_regs(self.device(), gicr_typers, &state.rdist)
-                .map_err(Error::RestoreRedistributorRegisters)?;
-
-            set_icc_regs(self.device(), gicr_typers, &state.icc)
-                .map_err(Error::RestoreIccRegisters)?;
-
-            Ok(())
-        }
-    }
-
-    impl GicDevice for KvmGicV3 {
-        fn device(&self) -> &Arc<dyn hypervisor::Device> {
-            &self.device
-        }
-
-        fn fdt_compatibility(&self) -> &str {
-            "arm,gic-v3"
-        }
-
-        fn fdt_maint_irq(&self) -> u32 {
-            KvmGicV3::ARCH_GIC_V3_MAINT_IRQ
-        }
-
-        fn device_properties(&self) -> &[u64] {
-            &self.properties
-        }
-
-        fn vcpu_count(&self) -> u64 {
-            self.vcpu_count
-        }
-
-        fn set_its_device(&mut self, _its_device: Option<Arc<dyn hypervisor::Device>>) {}
-
-        fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]) {
-            let gicr_typers = construct_gicr_typers(vcpu_states);
-            self.gicr_typers = gicr_typers;
-        }
-
-        fn as_any_concrete_mut(&mut self) -> &mut dyn Any {
-            self
-        }
-    }
-
-    impl KvmGicDevice for KvmGicV3 {
-        fn version() -> u32 {
-            kvm_bindings::kvm_device_type_KVM_DEV_TYPE_ARM_VGIC_V3
-        }
-
-        fn create_device(
-            device: Arc<dyn hypervisor::Device>,
-            vcpu_count: u64,
-        ) -> Box<dyn GicDevice> {
-            Box::new(KvmGicV3 {
-                device,
-                gicr_typers: vec![0; vcpu_count.try_into().unwrap()],
-                properties: [
-                    KvmGicV3::get_dist_addr(),
-                    KvmGicV3::get_dist_size(),
-                    KvmGicV3::get_redists_addr(vcpu_count),
-                    KvmGicV3::get_redists_size(vcpu_count),
-                ],
-                vcpu_count,
-            })
-        }
-
-        fn init_device_attributes(
-            _vm: &Arc<dyn hypervisor::Vm>,
-            gic_device: &mut dyn GicDevice,
-        ) -> crate::aarch64::gic::Result<()> {
-            /* Setting up the distributor attribute.
-             We are placing the GIC below 1GB so we need to substract the size of the distributor.
-            */
-            Self::set_device_attribute(
-                gic_device.device(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
-                u64::from(kvm_bindings::KVM_VGIC_V3_ADDR_TYPE_DIST),
-                &KvmGicV3::get_dist_addr() as *const u64 as u64,
-                0,
-            )?;
-
-            /* Setting up the redistributors' attribute.
-            We are calculating here the start of the redistributors address. We have one per CPU.
-            */
-            Self::set_device_attribute(
-                gic_device.device(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
-                u64::from(kvm_bindings::KVM_VGIC_V3_ADDR_TYPE_REDIST),
-                &KvmGicV3::get_redists_addr(gic_device.vcpu_count()) as *const u64 as u64,
-                0,
-            )?;
-
-            Ok(())
-        }
-    }
-
-    pub const GIC_V3_SNAPSHOT_ID: &str = "gic-v3";
-    impl Snapshottable for KvmGicV3 {
-        fn id(&self) -> String {
-            GIC_V3_SNAPSHOT_ID.to_string()
-        }
-
-        fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
-            let gicr_typers = self.gicr_typers.clone();
-            Snapshot::new_from_versioned_state(&self.id(), &self.state(&gicr_typers).unwrap())
-        }
-
-        fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
-            let gicr_typers = self.gicr_typers.clone();
-            self.set_state(&gicr_typers, &snapshot.to_versioned_state(&self.id())?)
-                .map_err(|e| {
-                    MigratableError::Restore(anyhow!("Could not restore GICv3 state {:?}", e))
-                })
-        }
-    }
-
-    impl Pausable for KvmGicV3 {
-        fn pause(&mut self) -> std::result::Result<(), MigratableError> {
-            // Flush redistributors pending tables to guest RAM.
-            save_pending_tables(self.device()).map_err(|e| {
-                MigratableError::Pause(anyhow!("Could not save GICv3 GIC pending tables {:?}", e))
-            })?;
-
-            Ok(())
-        }
-    }
-    impl Transportable for KvmGicV3 {}
-    impl Migratable for KvmGicV3 {}
-}
--- a/arch/src/aarch64/gic/gicv3_its.rs
+++ b/arch/src/aarch64/gic/gicv3_its.rs
@@ -1,514 +0,0 @@
-// Copyright 2021 Arm Limited (or its affiliates). All rights reserved.
-// SPDX-License-Identifier: Apache-2.0
-//
-// This file implements the GicV3 device with ITS (Virtual Interrupt Translation Service).
-
-pub mod kvm {
-    use crate::aarch64::gic::dist_regs::{get_dist_regs, read_ctlr, set_dist_regs, write_ctlr};
-    use crate::aarch64::gic::icc_regs::{get_icc_regs, set_icc_regs};
-    use crate::aarch64::gic::redist_regs::{
-        construct_gicr_typers, get_redist_regs, set_redist_regs,
-    };
-
-    use crate::aarch64::gic::gicv3::kvm::KvmGicV3;
-    use crate::aarch64::gic::kvm::{save_pending_tables, KvmGicDevice};
-    use crate::aarch64::gic::GicDevice;
-    use crate::layout;
-    use anyhow::anyhow;
-    use hypervisor::kvm::kvm_bindings;
-    use hypervisor::CpuState;
-    use std::any::Any;
-    use std::convert::TryInto;
-    use std::sync::Arc;
-    use std::{boxed::Box, result};
-    use versionize::{VersionMap, Versionize, VersionizeResult};
-    use versionize_derive::Versionize;
-    use vm_migration::{
-        Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable,
-        VersionMapped,
-    };
-
-    const GITS_CTLR: u32 = 0x0000;
-    const GITS_IIDR: u32 = 0x0004;
-    const GITS_CBASER: u32 = 0x0080;
-    const GITS_CWRITER: u32 = 0x0088;
-    const GITS_CREADR: u32 = 0x0090;
-    const GITS_BASER: u32 = 0x0100;
-
-    /// Errors thrown while saving/restoring the GICv3ITS.
-    #[derive(Debug)]
-    pub enum Error {
-        /// Error in saving RDIST pending tables into guest RAM.
-        SavePendingTables(crate::aarch64::gic::Error),
-        /// Error in saving GIC distributor registers.
-        SaveDistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC distributor registers.
-        RestoreDistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC distributor control registers.
-        SaveDistributorCtrlRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC distributor control registers.
-        RestoreDistributorCtrlRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC redistributor registers.
-        SaveRedistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC redistributor registers.
-        RestoreRedistributorRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GIC CPU interface registers.
-        SaveIccRegisters(crate::aarch64::gic::Error),
-        /// Error in restoring GIC CPU interface registers.
-        RestoreIccRegisters(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS IIDR register.
-        SaveITSIIDR(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS IIDR register.
-        RestoreITSIIDR(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS CBASER register.
-        SaveITSCBASER(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS CBASER register.
-        RestoreITSCBASER(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS CREADR register.
-        SaveITSCREADR(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS CREADR register.
-        RestoreITSCREADR(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS CWRITER register.
-        SaveITSCWRITER(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS CWRITER register.
-        RestoreITSCWRITER(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS BASER register.
-        SaveITSBASER(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS BASER register.
-        RestoreITSBASER(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS CTLR register.
-        SaveITSCTLR(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS CTLR register.
-        RestoreITSCTLR(crate::aarch64::gic::Error),
-        /// Error in saving GICv3ITS restore tables.
-        SaveITSTables(crate::aarch64::gic::Error),
-        /// Error in restoring GICv3ITS restore tables.
-        RestoreITSTables(crate::aarch64::gic::Error),
-    }
-
-    type Result<T> = result::Result<T, Error>;
-
-    /// Access an ITS device attribute.
-    ///
-    /// This is a helper function to get/set the ITS device attribute depending
-    /// the bool parameter `set` provided.
-    pub fn gicv3_its_attr_access(
-        its_device: &Arc<dyn hypervisor::Device>,
-        group: u32,
-        attr: u32,
-        val: &u64,
-        set: bool,
-    ) -> crate::aarch64::gic::Result<()> {
-        let mut gicv3_its_attr = kvm_bindings::kvm_device_attr {
-            group,
-            attr: attr as u64,
-            addr: val as *const u64 as u64,
-            flags: 0,
-        };
-        if set {
-            its_device
-                .set_device_attr(&gicv3_its_attr)
-                .map_err(crate::aarch64::gic::Error::SetDeviceAttribute)?;
-        } else {
-            its_device
-                .get_device_attr(&mut gicv3_its_attr)
-                .map_err(crate::aarch64::gic::Error::GetDeviceAttribute)?;
-        }
-        Ok(())
-    }
-
-    /// Function that saves/restores ITS tables into guest RAM.
-    ///
-    /// The tables get flushed to guest RAM whenever the VM gets stopped.
-    pub fn gicv3_its_tables_access(
-        its_device: &Arc<dyn hypervisor::Device>,
-        save: bool,
-    ) -> crate::aarch64::gic::Result<()> {
-        let attr = if save {
-            u64::from(kvm_bindings::KVM_DEV_ARM_ITS_SAVE_TABLES)
-        } else {
-            u64::from(kvm_bindings::KVM_DEV_ARM_ITS_RESTORE_TABLES)
-        };
-
-        let init_gic_attr = kvm_bindings::kvm_device_attr {
-            group: kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
-            attr,
-            addr: 0,
-            flags: 0,
-        };
-        its_device
-            .set_device_attr(&init_gic_attr)
-            .map_err(crate::aarch64::gic::Error::SetDeviceAttribute)
-    }
-
-    pub struct KvmGicV3Its {
-        /// The hypervisor agnostic device for the GicV3
-        device: Arc<dyn hypervisor::Device>,
-
-        /// The hypervisor agnostic device for the Its device
-        its_device: Option<Arc<dyn hypervisor::Device>>,
-
-        /// Vector holding values of GICR_TYPER for each vCPU
-        gicr_typers: Vec<u64>,
-
-        /// GIC device properties, to be used for setting up the fdt entry
-        gic_properties: [u64; 4],
-
-        /// MSI device properties, to be used for setting up the fdt entry
-        msi_properties: [u64; 2],
-
-        /// Number of CPUs handled by the device
-        vcpu_count: u64,
-    }
-
-    #[derive(Versionize)]
-    pub struct Gicv3ItsState {
-        dist: Vec<u32>,
-        rdist: Vec<u32>,
-        icc: Vec<u32>,
-        // special register that enables interrupts and affinity routing
-        gicd_ctlr: u32,
-        its_ctlr: u64,
-        its_iidr: u64,
-        its_cbaser: u64,
-        its_cwriter: u64,
-        its_creadr: u64,
-        its_baser: [u64; 8],
-    }
-
-    impl VersionMapped for Gicv3ItsState {}
-
-    impl KvmGicV3Its {
-        fn get_msi_size() -> u64 {
-            layout::GIC_V3_ITS_SIZE
-        }
-
-        fn get_msi_addr(vcpu_count: u64) -> u64 {
-            KvmGicV3::get_redists_addr(vcpu_count) - KvmGicV3Its::get_msi_size()
-        }
-
-        /// Save the state of GICv3ITS.
-        fn state(&self, gicr_typers: &[u64]) -> Result<Gicv3ItsState> {
-            let gicd_ctlr =
-                read_ctlr(self.device()).map_err(Error::SaveDistributorCtrlRegisters)?;
-
-            let dist_state =
-                get_dist_regs(self.device()).map_err(Error::SaveDistributorRegisters)?;
-
-            let rdist_state = get_redist_regs(self.device(), gicr_typers)
-                .map_err(Error::SaveRedistributorRegisters)?;
-
-            let icc_state =
-                get_icc_regs(self.device(), gicr_typers).map_err(Error::SaveIccRegisters)?;
-
-            let its_baser_state: [u64; 8] = [0; 8];
-            for i in 0..8 {
-                gicv3_its_attr_access(
-                    self.its_device().unwrap(),
-                    kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                    GITS_BASER + i * 8,
-                    &its_baser_state[i as usize],
-                    false,
-                )
-                .map_err(Error::SaveITSBASER)?;
-            }
-
-            let its_ctlr_state: u64 = 0;
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CTLR,
-                &its_ctlr_state,
-                false,
-            )
-            .map_err(Error::SaveITSCTLR)?;
-
-            let its_cbaser_state: u64 = 0;
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CBASER,
-                &its_cbaser_state,
-                false,
-            )
-            .map_err(Error::SaveITSCBASER)?;
-
-            let its_creadr_state: u64 = 0;
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CREADR,
-                &its_creadr_state,
-                false,
-            )
-            .map_err(Error::SaveITSCREADR)?;
-
-            let its_cwriter_state: u64 = 0;
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CWRITER,
-                &its_cwriter_state,
-                false,
-            )
-            .map_err(Error::SaveITSCWRITER)?;
-
-            let its_iidr_state: u64 = 0;
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_IIDR,
-                &its_iidr_state,
-                false,
-            )
-            .map_err(Error::SaveITSIIDR)?;
-
-            Ok(Gicv3ItsState {
-                dist: dist_state,
-                rdist: rdist_state,
-                icc: icc_state,
-                gicd_ctlr,
-                its_ctlr: its_ctlr_state,
-                its_iidr: its_iidr_state,
-                its_cbaser: its_cbaser_state,
-                its_cwriter: its_cwriter_state,
-                its_creadr: its_creadr_state,
-                its_baser: its_baser_state,
-            })
-        }
-
-        /// Restore the state of GICv3ITS.
-        fn set_state(&mut self, gicr_typers: &[u64], state: &Gicv3ItsState) -> Result<()> {
-            write_ctlr(self.device(), state.gicd_ctlr)
-                .map_err(Error::RestoreDistributorCtrlRegisters)?;
-
-            set_dist_regs(self.device(), &state.dist)
-                .map_err(Error::RestoreDistributorRegisters)?;
-
-            set_redist_regs(self.device(), gicr_typers, &state.rdist)
-                .map_err(Error::RestoreRedistributorRegisters)?;
-
-            set_icc_regs(self.device(), gicr_typers, &state.icc)
-                .map_err(Error::RestoreIccRegisters)?;
-
-            //Restore GICv3ITS registers
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_IIDR,
-                &state.its_iidr,
-                true,
-            )
-            .map_err(Error::RestoreITSIIDR)?;
-
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CBASER,
-                &state.its_cbaser,
-                true,
-            )
-            .map_err(Error::RestoreITSCBASER)?;
-
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CREADR,
-                &state.its_creadr,
-                true,
-            )
-            .map_err(Error::RestoreITSCREADR)?;
-
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CWRITER,
-                &state.its_cwriter,
-                true,
-            )
-            .map_err(Error::RestoreITSCWRITER)?;
-
-            for i in 0..8 {
-                gicv3_its_attr_access(
-                    self.its_device().unwrap(),
-                    kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                    GITS_BASER + i * 8,
-                    &state.its_baser[i as usize],
-                    true,
-                )
-                .map_err(Error::RestoreITSBASER)?;
-            }
-
-            // Restore ITS tables
-            gicv3_its_tables_access(self.its_device().unwrap(), false)
-                .map_err(Error::RestoreITSTables)?;
-
-            gicv3_its_attr_access(
-                self.its_device().unwrap(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
-                GITS_CTLR,
-                &state.its_ctlr,
-                true,
-            )
-            .map_err(Error::RestoreITSCTLR)?;
-
-            Ok(())
-        }
-    }
-
-    impl GicDevice for KvmGicV3Its {
-        fn device(&self) -> &Arc<dyn hypervisor::Device> {
-            &self.device
-        }
-
-        fn its_device(&self) -> Option<&Arc<dyn hypervisor::Device>> {
-            self.its_device.as_ref()
-        }
-
-        fn fdt_compatibility(&self) -> &str {
-            "arm,gic-v3"
-        }
-
-        fn msi_compatible(&self) -> bool {
-            true
-        }
-
-        fn msi_compatibility(&self) -> &str {
-            "arm,gic-v3-its"
-        }
-
-        fn fdt_maint_irq(&self) -> u32 {
-            KvmGicV3::ARCH_GIC_V3_MAINT_IRQ
-        }
-
-        fn msi_properties(&self) -> &[u64] {
-            &self.msi_properties
-        }
-
-        fn device_properties(&self) -> &[u64] {
-            &self.gic_properties
-        }
-
-        fn vcpu_count(&self) -> u64 {
-            self.vcpu_count
-        }
-
-        fn set_its_device(&mut self, its_device: Option<Arc<dyn hypervisor::Device>>) {
-            self.its_device = its_device;
-        }
-
-        fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]) {
-            let gicr_typers = construct_gicr_typers(vcpu_states);
-            self.gicr_typers = gicr_typers;
-        }
-
-        fn as_any_concrete_mut(&mut self) -> &mut dyn Any {
-            self
-        }
-    }
-
-    impl KvmGicDevice for KvmGicV3Its {
-        fn version() -> u32 {
-            KvmGicV3::version()
-        }
-
-        fn create_device(
-            device: Arc<dyn hypervisor::Device>,
-            vcpu_count: u64,
-        ) -> Box<dyn GicDevice> {
-            Box::new(KvmGicV3Its {
-                device,
-                its_device: None,
-                gicr_typers: vec![0; vcpu_count.try_into().unwrap()],
-                gic_properties: [
-                    KvmGicV3::get_dist_addr(),
-                    KvmGicV3::get_dist_size(),
-                    KvmGicV3::get_redists_addr(vcpu_count),
-                    KvmGicV3::get_redists_size(vcpu_count),
-                ],
-                msi_properties: [
-                    KvmGicV3Its::get_msi_addr(vcpu_count),
-                    KvmGicV3Its::get_msi_size(),
-                ],
-                vcpu_count,
-            })
-        }
-
-        fn init_device_attributes(
-            vm: &Arc<dyn hypervisor::Vm>,
-            gic_device: &mut dyn GicDevice,
-        ) -> crate::aarch64::gic::Result<()> {
-            KvmGicV3::init_device_attributes(vm, gic_device)?;
-
-            let mut its_device = kvm_bindings::kvm_create_device {
-                type_: kvm_bindings::kvm_device_type_KVM_DEV_TYPE_ARM_VGIC_ITS,
-                fd: 0,
-                flags: 0,
-            };
-
-            let its_fd = vm
-                .create_device(&mut its_device)
-                .map_err(crate::aarch64::gic::Error::CreateGic)?;
-
-            Self::set_device_attribute(
-                &its_fd,
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
-                u64::from(kvm_bindings::KVM_VGIC_ITS_ADDR_TYPE),
-                &KvmGicV3Its::get_msi_addr(gic_device.vcpu_count()) as *const u64 as u64,
-                0,
-            )?;
-
-            Self::set_device_attribute(
-                &its_fd,
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
-                u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_CTRL_INIT),
-                0,
-                0,
-            )?;
-
-            gic_device.set_its_device(Some(its_fd));
-
-            Ok(())
-        }
-    }
-
-    pub const GIC_V3_ITS_SNAPSHOT_ID: &str = "gic-v3-its";
-    impl Snapshottable for KvmGicV3Its {
-        fn id(&self) -> String {
-            GIC_V3_ITS_SNAPSHOT_ID.to_string()
-        }
-
-        fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
-            let gicr_typers = self.gicr_typers.clone();
-            Snapshot::new_from_versioned_state(&self.id(), &self.state(&gicr_typers).unwrap())
-        }
-
-        fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
-            let gicr_typers = self.gicr_typers.clone();
-            self.set_state(&gicr_typers, &snapshot.to_versioned_state(&self.id())?)
-                .map_err(|e| {
-                    MigratableError::Restore(anyhow!("Could not restore GICv3ITS state {:?}", e))
-                })
-        }
-    }
-
-    impl Pausable for KvmGicV3Its {
-        fn pause(&mut self) -> std::result::Result<(), MigratableError> {
-            // Flush redistributors pending tables to guest RAM.
-            save_pending_tables(self.device()).map_err(|e| {
-                MigratableError::Pause(anyhow!(
-                    "Could not save GICv3ITS GIC pending tables {:?}",
-                    e
-                ))
-            })?;
-            // Flush ITS tables to guest RAM.
-            gicv3_its_tables_access(self.its_device().unwrap(), true).map_err(|e| {
-                MigratableError::Pause(anyhow!("Could not save GICv3ITS ITS tables {:?}", e))
-            })?;
-
-            Ok(())
-        }
-    }
-    impl Transportable for KvmGicV3Its {}
-    impl Migratable for KvmGicV3Its {}
-}
--- a/arch/src/aarch64/gic/mod.rs
+++ b/arch/src/aarch64/gic/mod.rs
@@ -1,220 +0,0 @@
-// Copyright 2021 Arm Limited (or its affiliates). All rights reserved.
-// Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-
-pub mod dist_regs;
-pub mod gicv3;
-pub mod gicv3_its;
-pub mod icc_regs;
-pub mod redist_regs;
-
-pub use self::dist_regs::{get_dist_regs, read_ctlr, set_dist_regs, write_ctlr};
-pub use self::icc_regs::{get_icc_regs, set_icc_regs};
-pub use self::redist_regs::{get_redist_regs, set_redist_regs};
-use hypervisor::CpuState;
-use std::any::Any;
-use std::result;
-use std::sync::Arc;
-
-/// Errors thrown while setting up the GIC.
-#[derive(Debug)]
-pub enum Error {
-    /// Error while calling KVM ioctl for setting up the global interrupt controller.
-    CreateGic(hypervisor::HypervisorVmError),
-    /// Error while setting device attributes for the GIC.
-    SetDeviceAttribute(hypervisor::HypervisorDeviceError),
-    /// Error while getting device attributes for the GIC.
-    GetDeviceAttribute(hypervisor::HypervisorDeviceError),
-}
-type Result<T> = result::Result<T, Error>;
-
-pub trait GicDevice: Send {
-    /// Returns the hypervisor agnostic Device of the GIC device
-    fn device(&self) -> &Arc<dyn hypervisor::Device>;
-
-    /// Returns the hypervisor agnostic Device of the ITS device
-    fn its_device(&self) -> Option<&Arc<dyn hypervisor::Device>> {
-        None
-    }
-
-    /// Returns the fdt compatibility property of the device
-    fn fdt_compatibility(&self) -> &str;
-
-    /// Returns the maint_irq fdt property of the device
-    fn fdt_maint_irq(&self) -> u32;
-
-    /// Returns an array with GIC device properties
-    fn device_properties(&self) -> &[u64];
-
-    /// Returns the number of vCPUs this GIC handles
-    fn vcpu_count(&self) -> u64;
-
-    /// Returns whether the GIC device is MSI compatible or not
-    fn msi_compatible(&self) -> bool {
-        false
-    }
-
-    /// Returns the MSI compatibility property of the device
-    fn msi_compatibility(&self) -> &str {
-        ""
-    }
-
-    /// Returns the MSI reg property of the device
-    fn msi_properties(&self) -> &[u64] {
-        &[]
-    }
-
-    fn set_its_device(&mut self, its_device: Option<Arc<dyn hypervisor::Device>>);
-
-    /// Get the values of GICR_TYPER for each vCPU.
-    fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]);
-
-    /// Downcast the trait object to its concrete type.
-    fn as_any_concrete_mut(&mut self) -> &mut dyn Any;
-}
-
-pub mod kvm {
-    use super::GicDevice;
-    use super::Result;
-    use crate::aarch64::gic::gicv3_its::kvm::KvmGicV3Its;
-    use crate::layout;
-    use hypervisor::kvm::kvm_bindings;
-    use std::boxed::Box;
-    use std::sync::Arc;
-
-    /// Trait for GIC devices.
-    pub trait KvmGicDevice: Send + Sync + GicDevice {
-        /// Returns the GIC version of the device
-        fn version() -> u32;
-
-        /// Create the GIC device object
-        fn create_device(
-            device: Arc<dyn hypervisor::Device>,
-            vcpu_count: u64,
-        ) -> Box<dyn GicDevice>;
-
-        /// Setup the device-specific attributes
-        fn init_device_attributes(
-            vm: &Arc<dyn hypervisor::Vm>,
-            gic_device: &mut dyn GicDevice,
-        ) -> Result<()>;
-
-        /// Initialize a GIC device
-        fn init_device(vm: &Arc<dyn hypervisor::Vm>) -> Result<Arc<dyn hypervisor::Device>> {
-            let mut gic_device = kvm_bindings::kvm_create_device {
-                type_: Self::version(),
-                fd: 0,
-                flags: 0,
-            };
-
-            vm.create_device(&mut gic_device)
-                .map_err(super::Error::CreateGic)
-        }
-
-        /// Set a GIC device attribute
-        fn set_device_attribute(
-            device: &Arc<dyn hypervisor::Device>,
-            group: u32,
-            attr: u64,
-            addr: u64,
-            flags: u32,
-        ) -> Result<()> {
-            let attr = kvm_bindings::kvm_device_attr {
-                flags,
-                group,
-                attr,
-                addr,
-            };
-            device
-                .set_device_attr(&attr)
-                .map_err(super::Error::SetDeviceAttribute)?;
-
-            Ok(())
-        }
-
-        /// Get a GIC device attribute
-        fn get_device_attribute(
-            device: &Arc<dyn hypervisor::Device>,
-            group: u32,
-            attr: u64,
-            addr: u64,
-            flags: u32,
-        ) -> Result<()> {
-            let mut attr = kvm_bindings::kvm_device_attr {
-                flags,
-                group,
-                attr,
-                addr,
-            };
-            device
-                .get_device_attr(&mut attr)
-                .map_err(super::Error::GetDeviceAttribute)?;
-
-            Ok(())
-        }
-
-        /// Finalize the setup of a GIC device
-        fn finalize_device(gic_device: &dyn GicDevice) -> Result<()> {
-            /* We need to tell the kernel how many irqs to support with this vgic.
-             * See the `layout` module for details.
-             */
-            let nr_irqs: u32 = layout::IRQ_NUM;
-            let nr_irqs_ptr = &nr_irqs as *const u32;
-            Self::set_device_attribute(
-                gic_device.device(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
-                0,
-                nr_irqs_ptr as u64,
-                0,
-            )?;
-
-            /* Finalize the GIC.
-             * See https://code.woboq.org/linux/linux/virt/kvm/arm/vgic/vgic-kvm-device.c.html#211.
-             */
-            Self::set_device_attribute(
-                gic_device.device(),
-                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
-                u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_CTRL_INIT),
-                0,
-                0,
-            )?;
-
-            Ok(())
-        }
-
-        /// Method to initialize the GIC device
-        #[allow(clippy::new_ret_no_self)]
-        fn new(vm: &Arc<dyn hypervisor::Vm>, vcpu_count: u64) -> Result<Box<dyn GicDevice>> {
-            let vgic_fd = Self::init_device(vm)?;
-
-            let mut device = Self::create_device(vgic_fd, vcpu_count);
-
-            Self::init_device_attributes(vm, &mut *device)?;
-
-            Self::finalize_device(&*device)?;
-
-            Ok(device)
-        }
-    }
-
-    /// Create a GICv3-ITS device.
-    ///
-    pub fn create_gic(vm: &Arc<dyn hypervisor::Vm>, vcpu_count: u64) -> Result<Box<dyn GicDevice>> {
-        debug!("creating a GICv3-ITS");
-        KvmGicV3Its::new(vm, vcpu_count)
-    }
-
-    /// Function that saves RDIST pending tables into guest RAM.
-    ///
-    /// The tables get flushed to guest RAM whenever the VM gets stopped.
-    pub fn save_pending_tables(gic: &Arc<dyn hypervisor::Device>) -> Result<()> {
-        let init_gic_attr = kvm_bindings::kvm_device_attr {
-            group: kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
-            attr: u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES),
-            addr: 0,
-            flags: 0,
-        };
-        gic.set_device_attr(&init_gic_attr)
-            .map_err(super::Error::SetDeviceAttribute)
-    }
-}
--- a/arch/src/aarch64/mod.rs
+++ b/arch/src/aarch64/mod.rs
@@ -4,23 +4,19 @@

 /// Module for the flattened device tree.
 pub mod fdt;
-/// Module for the global interrupt controller configuration.
-pub mod gic;
 /// Layout for this aarch64 system.
 pub mod layout;
-/// Logic for configuring aarch64 registers.
-pub mod regs;
 /// Module for loading UEFI binary.
 pub mod uefi;

 pub use self::fdt::DeviceInfoForFdt;
 use crate::{DeviceType, GuestMemoryMmap, NumaNodes, PciSpaceInfo, RegionType};
-use gic::GicDevice;
+use hypervisor::arch::aarch64::gic::Vgic;
 use log::{log_enabled, Level};
 use std::collections::HashMap;
 use std::convert::TryInto;
 use std::fmt::Debug;
-use std::sync::Arc;
+use std::sync::{Arc, Mutex};
 use vm_memory::{Address, GuestAddress, GuestMemory, GuestUsize};

 /// Errors thrown while configuring aarch64 system.
@@ -33,13 +29,13 @@ pub enum Error {
    WriteFdtToMemory(fdt::Error),

    /// Failed to create a GIC.
-    SetupGic(gic::Error),
+    SetupGic,

    /// Failed to compute the initramfs address.
    InitramfsAddress,

    /// Error configuring the general purpose registers
-    RegsConfiguration(regs::Error),
+    RegsConfiguration(hypervisor::HypervisorCpuError),

    /// Error configuring the MPIDR register
    VcpuRegMpidr(hypervisor::HypervisorCpuError),
@@ -50,7 +46,7 @@ pub enum Error {

 impl From<Error> for super::Error {
    fn from(e: Error) -> super::Error {
-        super::Error::AArch64Setup(e)
+        super::Error::PlatformSpecific(e)
    }
 }

@@ -64,16 +60,20 @@ pub struct EntryPoint {

 /// Configure the specified VCPU, and return its MPIDR.
 pub fn configure_vcpu(
-    fd: &Arc<dyn hypervisor::Vcpu>,
+    vcpu: &Arc<dyn hypervisor::Vcpu>,
    id: u8,
    kernel_entry_point: Option<EntryPoint>,
 ) -> super::Result<u64> {
    if let Some(kernel_entry_point) = kernel_entry_point {
-        regs::setup_regs(fd, id, kernel_entry_point.entry_addr.raw_value())
-            .map_err(Error::RegsConfiguration)?;
+        vcpu.setup_regs(
+            id,
+            kernel_entry_point.entry_addr.raw_value(),
+            super::layout::FDT_START.raw_value(),
+        )
+        .map_err(Error::RegsConfiguration)?;
    }

-    let mpidr = fd.read_mpidr().map_err(Error::VcpuRegMpidr)?;
+    let mpidr = vcpu.read_mpidr().map_err(Error::VcpuRegMpidr)?;
    Ok(mpidr)
 }

@@ -143,7 +143,7 @@ pub fn configure_system<T: DeviceInfoForFdt + Clone + Debug, S: ::std::hash::Bui
    initrd: &Option<super::InitramfsConfig>,
    pci_space_info: &[PciSpaceInfo],
    virtio_iommu_bdf: Option<u32>,
-    gic_device: &dyn GicDevice,
+    gic_device: &Arc<Mutex<dyn Vgic>>,
    numa_nodes: &NumaNodes,
    pmu_supported: bool,
 ) -> super::Result<()> {
@@ -185,10 +185,10 @@ pub fn initramfs_load_addr(
            if guest_mem.address_in_range(offset) {
                Ok(offset.raw_value())
            } else {
-                Err(super::Error::AArch64Setup(Error::InitramfsAddress))
+                Err(super::Error::PlatformSpecific(Error::InitramfsAddress))
            }
        }
-        None => Err(super::Error::AArch64Setup(Error::InitramfsAddress)),
+        None => Err(super::Error::PlatformSpecific(Error::InitramfsAddress)),
    }
 }

--- a/arch/src/aarch64/regs.rs
+++ b/arch/src/aarch64/regs.rs
@@ -1,75 +0,0 @@
-// Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
-// SPDX-License-Identifier: Apache-2.0
-//
-// Portions Copyright 2017 The Chromium OS Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the THIRD-PARTY file.
-
-use hypervisor::kvm::kvm_bindings::{
-    kvm_regs, user_pt_regs, KVM_REG_ARM64, KVM_REG_ARM_CORE, KVM_REG_SIZE_U64,
-};
-use hypervisor::{arm64_core_reg_id, offset__of};
-use std::sync::Arc;
-use std::{mem, result};
-use vm_memory::Address;
-
-/// Errors thrown while setting aarch64 registers.
-#[derive(Debug)]
-pub enum Error {
-    /// Failed to set core register (PC, PSTATE or general purpose ones).
-    SetCoreRegister(hypervisor::HypervisorCpuError),
-    /// Failed to get a system register.
-    GetSysRegister(hypervisor::HypervisorCpuError),
-}
-type Result<T> = result::Result<T, Error>;
-
-#[allow(non_upper_case_globals)]
-// PSR (Processor State Register) bits.
-// Taken from arch/arm64/include/uapi/asm/ptrace.h.
-const PSR_MODE_EL1h: u64 = 0x0000_0005;
-const PSR_F_BIT: u64 = 0x0000_0040;
-const PSR_I_BIT: u64 = 0x0000_0080;
-const PSR_A_BIT: u64 = 0x0000_0100;
-const PSR_D_BIT: u64 = 0x0000_0200;
-// Taken from arch/arm64/kvm/inject_fault.c.
-const PSTATE_FAULT_BITS_64: u64 = PSR_MODE_EL1h | PSR_A_BIT | PSR_F_BIT | PSR_I_BIT | PSR_D_BIT;
-
-/// Configure core registers for a given CPU.
-///
-/// # Arguments
-///
-/// * `vcpu` - Structure for the VCPU that holds the VCPU's fd.
-/// * `cpu_id` - Index of current vcpu.
-/// * `boot_ip` - Starting instruction pointer.
-/// * `mem` - Reserved DRAM for current VM.
-pub fn setup_regs(vcpu: &Arc<dyn hypervisor::Vcpu>, cpu_id: u8, boot_ip: u64) -> Result<()> {
-    let kreg_off = offset__of!(kvm_regs, regs);
-
-    // Get the register index of the PSTATE (Processor State) register.
-    let pstate = offset__of!(user_pt_regs, pstate) + kreg_off;
-    vcpu.set_reg(
-        arm64_core_reg_id!(KVM_REG_SIZE_U64, pstate),
-        PSTATE_FAULT_BITS_64,
-    )
-    .map_err(Error::SetCoreRegister)?;
-
-    // Other vCPUs are powered off initially awaiting PSCI wakeup.
-    if cpu_id == 0 {
-        // Setting the PC (Processor Counter) to the current program address (kernel address).
-        let pc = offset__of!(user_pt_regs, pc) + kreg_off;
-        vcpu.set_reg(arm64_core_reg_id!(KVM_REG_SIZE_U64, pc), boot_ip as u64)
-            .map_err(Error::SetCoreRegister)?;
-
-        // Last mandatory thing to set -> the address pointing to the FDT (also called DTB).
-        // "The device tree blob (dtb) must be placed on an 8-byte boundary and must
-        // not exceed 2 megabytes in size." -> https://www.kernel.org/doc/Documentation/arm64/booting.txt.
-        // We are choosing to place it the end of DRAM. See `get_fdt_addr`.
-        let regs0 = offset__of!(user_pt_regs, regs) + kreg_off;
-        vcpu.set_reg(
-            arm64_core_reg_id!(KVM_REG_SIZE_U64, regs0),
-            super::layout::FDT_START.raw_value(),
-        )
-        .map_err(Error::SetCoreRegister)?;
-    }
-    Ok(())
-}
--- a/arch/src/lib.rs
+++ b/arch/src/lib.rs
@@ -9,15 +9,15 @@

 #[macro_use]
 extern crate log;
-#[macro_use]
-extern crate serde_derive;

 #[cfg(target_arch = "x86_64")]
 use crate::x86_64::SgxEpcSection;
+use serde::{Deserialize, Serialize};
 use std::collections::BTreeMap;
 use std::fmt;
 use std::result;
 use std::sync::Arc;
+use thiserror::Error;
 use versionize::{VersionMap, Versionize, VersionizeError, VersionizeResult};
 use versionize_derive::Versionize;
 use vm_migration::VersionMapped;
@@ -26,31 +26,27 @@ type GuestMemoryMmap = vm_memory::GuestMemoryMmap<vm_memory::bitmap::AtomicBitma
 type GuestRegionMmap = vm_memory::GuestRegionMmap<vm_memory::bitmap::AtomicBitmap>;

 /// Type for returning error code.
-#[derive(Debug)]
+#[derive(Debug, Error)]
 pub enum Error {
    #[cfg(target_arch = "x86_64")]
-    /// X86_64 specific error triggered during system configuration.
-    X86_64Setup(x86_64::Error),
+    #[error("Platform specific error (x86_64): {0:?}")]
+    PlatformSpecific(x86_64::Error),
    #[cfg(target_arch = "aarch64")]
-    /// AArch64 specific error triggered during system configuration.
-    AArch64Setup(aarch64::Error),
-    /// The zero page extends past the end of guest_mem.
-    ZeroPagePastRamEnd,
-    /// Error writing the zero page of guest memory.
-    ZeroPageSetup(vm_memory::GuestMemoryError),
-    /// The memory map table extends past the end of guest memory.
+    #[error("Platform specific error (aarch64): {0:?}")]
+    PlatformSpecific(aarch64::Error),
+    #[error("The memory map table extends past the end of guest memory")]
    MemmapTablePastRamEnd,
-    /// Error writing memory map table to guest memory.
+    #[error("Error writing memory map table to guest memory")]
    MemmapTableSetup,
-    /// The hvm_start_info structure extends past the end of guest memory.
+    #[error("The hvm_start_info structure extends past the end of guest memory")]
    StartInfoPastRamEnd,
-    /// Error writing hvm_start_info to guest memory.
+    #[error("Error writing hvm_start_info to guest memory")]
    StartInfoSetup,
-    /// Failed to compute initramfs address.
+    #[error("Failed to compute initramfs address")]
    InitramfsAddress,
-    /// Error writing module entry to guest memory.
-    ModlistSetup(vm_memory::GuestMemoryError),
-    /// RSDP Beyond Guest Memory
+    #[error("Error writing module entry to guest memory: {0}")]
+    ModlistSetup(#[source] vm_memory::GuestMemoryError),
+    #[error("RSDP extends past the end of guest memory")]
    RsdpPastRamEnd,
 }

@@ -58,7 +54,7 @@ pub enum Error {
 pub type Result<T> = result::Result<T, Error>;

 /// Type for memory region types.
-#[derive(Clone, Copy, PartialEq, Debug, Serialize, Deserialize, Versionize)]
+#[derive(Clone, Copy, PartialEq, Eq, Debug, Serialize, Deserialize, Versionize)]
 pub enum RegionType {
    /// RAM type
    Ram,
--- a/arch/src/x86_64/mod.rs
+++ b/arch/src/x86_64/mod.rs
@@ -15,7 +15,8 @@ pub mod regs;
 use crate::GuestMemoryMmap;
 use crate::InitramfsConfig;
 use crate::RegionType;
-use hypervisor::{CpuId, CpuIdEntry, HypervisorError, CPUID_FLAG_VALID_INDEX};
+use hypervisor::x86_64::{CpuId, CpuIdEntry, CPUID_FLAG_VALID_INDEX};
+use hypervisor::HypervisorError;
 use linux_loader::loader::bootparam::boot_params;
 use linux_loader::loader::elf::start_info::{
    hvm_memmap_table_entry, hvm_modlist_entry, hvm_start_info,
@@ -197,7 +198,7 @@ pub enum Error {

 impl From<Error> for super::Error {
    fn from(e: Error) -> super::Error {
-        super::Error::X86_64Setup(e)
+        super::Error::PlatformSpecific(e)
    }
 }

@@ -743,7 +744,7 @@ pub fn generate_common_cpuid(
 }

 pub fn configure_vcpu(
-    fd: &Arc<dyn hypervisor::Vcpu>,
+    vcpu: &Arc<dyn hypervisor::Vcpu>,
    id: u8,
    kernel_entry_point: Option<EntryPoint>,
    vm_memory: &GuestMemoryAtomic<GuestMemoryMmap>,
@@ -755,23 +756,23 @@ pub fn configure_vcpu(
    CpuidPatch::set_cpuid_reg(&mut cpuid, 0xb, None, CpuidReg::EDX, u32::from(id));
    CpuidPatch::set_cpuid_reg(&mut cpuid, 0x1f, None, CpuidReg::EDX, u32::from(id));

-    fd.set_cpuid2(&cpuid)
+    vcpu.set_cpuid2(&cpuid)
        .map_err(|e| Error::SetSupportedCpusFailed(e.into()))?;

    if kvm_hyperv {
-        fd.enable_hyperv_synic().unwrap();
+        vcpu.enable_hyperv_synic().unwrap();
    }

-    regs::setup_msrs(fd).map_err(Error::MsrsConfiguration)?;
+    regs::setup_msrs(vcpu).map_err(Error::MsrsConfiguration)?;
    if let Some(kernel_entry_point) = kernel_entry_point {
        if let Some(entry_addr) = kernel_entry_point.entry_addr {
            // Safe to unwrap because this method is called after the VM is configured
-            regs::setup_regs(fd, entry_addr.raw_value()).map_err(Error::RegsConfiguration)?;
-            regs::setup_fpu(fd).map_err(Error::FpuConfiguration)?;
-            regs::setup_sregs(&vm_memory.memory(), fd).map_err(Error::SregsConfiguration)?;
+            regs::setup_regs(vcpu, entry_addr.raw_value()).map_err(Error::RegsConfiguration)?;
+            regs::setup_fpu(vcpu).map_err(Error::FpuConfiguration)?;
+            regs::setup_sregs(&vm_memory.memory(), vcpu).map_err(Error::SregsConfiguration)?;
        }
    }
-    interrupts::set_lint(fd).map_err(|e| Error::LocalIntConfiguration(e.into()))?;
+    interrupts::set_lint(vcpu).map_err(|e| Error::LocalIntConfiguration(e.into()))?;
    Ok(())
 }

@@ -838,13 +839,14 @@ pub fn configure_system(
    _num_cpus: u8,
    rsdp_addr: Option<GuestAddress>,
    sgx_epc_region: Option<SgxEpcRegion>,
+    serial_number: Option<&str>,
 ) -> super::Result<()> {
    // Write EBDA address to location where ACPICA expects to find it
    guest_mem
        .write_obj((layout::EBDA_START.0 >> 4) as u16, layout::EBDA_POINTER)
        .map_err(Error::EbdaSetup)?;

-    let size = smbios::setup_smbios(guest_mem).map_err(Error::SmbiosSetup)?;
+    let size = smbios::setup_smbios(guest_mem, serial_number).map_err(Error::SmbiosSetup)?;

    // Place the MP table after the SMIOS table aligned to 16 bytes
    let offset = GuestAddress(layout::SMBIOS_START).unchecked_add(size);
@@ -1193,6 +1195,7 @@ mod tests {
            1,
            Some(layout::RSDP_POINTER),
            None,
+            None,
        );
        assert!(config_err.is_err());

@@ -1206,7 +1209,7 @@ mod tests {
            .collect();
        let gm = GuestMemoryMmap::from_ranges(&ram_regions).unwrap();

-        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None).unwrap();
+        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None, None).unwrap();

        // Now assigning some memory that is equal to the start of the 32bit memory hole.
        let mem_size = 3328 << 20;
@@ -1217,9 +1220,9 @@ mod tests {
            .map(|r| (r.0, r.1))
            .collect();
        let gm = GuestMemoryMmap::from_ranges(&ram_regions).unwrap();
-        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None).unwrap();
+        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None, None).unwrap();

-        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None).unwrap();
+        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None, None).unwrap();

        // Now assigning some memory that falls after the 32bit memory hole.
        let mem_size = 3330 << 20;
@@ -1230,9 +1233,9 @@ mod tests {
            .map(|r| (r.0, r.1))
            .collect();
        let gm = GuestMemoryMmap::from_ranges(&ram_regions).unwrap();
-        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None).unwrap();
+        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None, None).unwrap();

-        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None).unwrap();
+        configure_system(&gm, GuestAddress(0), &None, no_vcpus, None, None, None).unwrap();
    }

    #[test]
--- a/arch/src/x86_64/regs.rs
+++ b/arch/src/x86_64/regs.rs
@@ -9,7 +9,7 @@
 use crate::layout::{BOOT_GDT_START, BOOT_IDT_START, PVH_INFO_START};
 use crate::GuestMemoryMmap;
 use hypervisor::arch::x86::gdt::{gdt_entry, segment_from_gdt};
-use hypervisor::arch::x86::regs::*;
+use hypervisor::arch::x86::regs::CR0_PE;
 use hypervisor::x86_64::{FpuState, SpecialRegisters, StandardRegisters};
 use std::sync::Arc;
 use std::{mem, result};
--- a/arch/src/x86_64/smbios.rs
+++ b/arch/src/x86_64/smbios.rs
@@ -162,7 +162,7 @@ fn write_string(
    Ok(curptr)
 }

-pub fn setup_smbios(mem: &GuestMemoryMmap) -> Result<u64> {
+pub fn setup_smbios(mem: &GuestMemoryMmap, serial_number: Option<&str>) -> Result<u64> {
    let physptr = GuestAddress(SMBIOS_START)
        .checked_add(mem::size_of::<Smbios30Entrypoint>() as u64)
        .ok_or(Error::NotEnoughMemory)?;
@@ -195,11 +195,15 @@ pub fn setup_smbios(mem: &GuestMemoryMmap) -> Result<u64> {
            handle,
            manufacturer: 1, // First string written in this section
            product_name: 2, // Second string written in this section
+            serial_number: serial_number.map(|_| 3).unwrap_or_default(), // 3rd string
            ..Default::default()
        };
        curptr = write_and_incr(mem, smbios_sysinfo, curptr)?;
        curptr = write_string(mem, "Cloud Hypervisor", curptr)?;
        curptr = write_string(mem, "cloud-hypervisor", curptr)?;
+        if let Some(serial_number) = serial_number {
+            curptr = write_string(mem, serial_number, curptr)?;
+        }
        curptr = write_and_incr(mem, 0u8, curptr)?;
    }

@@ -263,7 +267,7 @@ mod tests {
    fn entrypoint_checksum() {
        let mem = GuestMemoryMmap::from_ranges(&[(GuestAddress(SMBIOS_START), 4096)]).unwrap();

-        setup_smbios(&mem).unwrap();
+        setup_smbios(&mem, None).unwrap();

        let smbios_ep: Smbios30Entrypoint = mem.read_obj(GuestAddress(SMBIOS_START)).unwrap();

--- a/block_util/Cargo.toml
+++ b/block_util/Cargo.toml
@@ -9,16 +9,16 @@ default = []

 [dependencies]
 io-uring = "0.5.2"
-libc = "0.2.123"
-log = "0.4.16"
+libc = "0.2.126"
+log = "0.4.17"
 qcow = { path = "../qcow" }
-thiserror = "1.0.30"
+thiserror = "1.0.31"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"
 vhdx = { path = "../vhdx" }
 virtio-bindings = { version = "0.1.0", features = ["virtio-v5_0_0"] }
-virtio-queue = "0.2.0"
-vm-memory = { version = "0.7.0", features = ["backend-mmap", "backend-atomic", "backend-bitmap"] }
+virtio-queue = "0.4.0"
+vm-memory = { version = "0.8.0", features = ["backend-mmap", "backend-atomic", "backend-bitmap"] }
 vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = "0.9.0"

--- a/block_util/src/async_io.rs
+++ b/block_util/src/async_io.rs
@@ -104,7 +104,7 @@ impl DiskTopology {

 pub type DiskFileResult<T> = std::result::Result<T, DiskFileError>;

-pub trait DiskFile: Send + Sync {
+pub trait DiskFile: Send {
    fn size(&mut self) -> DiskFileResult<u64>;
    fn new_async_io(&self, ring_depth: u32) -> DiskFileResult<Box<dyn AsyncIo>>;
    fn topology(&mut self) -> DiskTopology {
@@ -127,7 +127,7 @@ pub enum AsyncIoError {

 pub type AsyncIoResult<T> = std::result::Result<T, AsyncIoError>;

-pub trait AsyncIo: Send + Sync {
+pub trait AsyncIo: Send {
    fn notifier(&self) -> &EventFd;
    fn read_vectored(
        &mut self,
--- a/block_util/src/lib.rs
+++ b/block_util/src/lib.rs
@@ -138,7 +138,7 @@ impl ExecuteError {
    }
 }

-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub enum RequestType {
    In,
    Out,
--- a/devices/Cargo.toml
+++ b/devices/Cargo.toml
@@ -6,17 +6,18 @@ edition = "2021"

 [dependencies]
 acpi_tables = { path = "../acpi_tables" }
-anyhow = "1.0.56"
+anyhow = "1.0.58"
 arch = { path = "../arch" }
 bitflags = "1.3.2"
 byteorder = "1.4.3"
 epoll = "4.3.1"
-libc = "0.2.123"
-log = "0.4.16"
+hypervisor = { path = "../hypervisor" }
+libc = "0.2.126"
+log = "0.4.17"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"
 vm-device = { path = "../vm-device" }
-vm-memory = "0.7.0"
+vm-memory = "0.8.0"
 vm-migration = { path = "../vm-migration" }
 vmm-sys-util = "0.9.0"

--- a/devices/src/gic.rs
+++ b/devices/src/gic.rs
@@ -4,30 +4,34 @@

 use super::interrupt_controller::{Error, InterruptController};
 extern crate arch;
-use arch::aarch64::gic::GicDevice;
+use anyhow::anyhow;
+use arch::layout;
+use hypervisor::{arch::aarch64::gic::Vgic, CpuState};
 use std::result;
 use std::sync::{Arc, Mutex};
 use vm_device::interrupt::{
    InterruptIndex, InterruptManager, InterruptSourceConfig, InterruptSourceGroup,
    LegacyIrqSourceConfig, MsiIrqGroupConfig,
 };
+use vm_memory::Address;
+use vm_migration::{Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable};
 use vmm_sys_util::eventfd::EventFd;

 type Result<T> = result::Result<T, Error>;

-// Reserve 32 IRQs for legacy device.
-pub const IRQ_LEGACY_BASE: usize = arch::layout::IRQ_BASE as usize;
+// Reserve 32 IRQs for legacy devices.
+pub const IRQ_LEGACY_BASE: usize = layout::IRQ_BASE as usize;
 pub const IRQ_LEGACY_COUNT: usize = 32;

-// This Gic struct implements InterruptController to provide interrupt delivery service.
-// The Gic source files in arch/ folder maintain the Aarch64 specific Gic device.
-// The 2 Gic instances could be merged together.
-// Leave this refactoring to future. Two options may be considered:
-//   1. Move Gic*.rs from arch/ folder here.
-//   2. Move this file and ioapic.rs to arch/, as they are architecture specific.
+// Gic (Generic Interupt Controller) struct provides all the functionality of a
+// GIC device. It wraps a hypervisor-emulated GIC device (Vgic) provided by the
+// `hypervisor` crate.
+// Gic struct also implements InterruptController to provide interrupt delivery
+// service.
 pub struct Gic {
    interrupt_source_group: Arc<dyn InterruptSourceGroup>,
-    gic_device: Option<Arc<Mutex<Box<dyn GicDevice>>>>,
+    // The hypervisor agnostic virtual GIC
+    vgic: Option<Arc<Mutex<dyn Vgic>>>,
 }

 impl Gic {
@@ -44,16 +48,32 @@ impl Gic {

        Ok(Gic {
            interrupt_source_group,
-            gic_device: None,
+            vgic: None,
        })
    }

-    pub fn set_gic_device(&mut self, gic_device: Arc<Mutex<Box<dyn GicDevice>>>) {
-        self.gic_device = Some(gic_device);
+    pub fn create_vgic(
+        &mut self,
+        vm: &Arc<dyn hypervisor::Vm>,
+        vcpu_count: u64,
+    ) -> Result<Arc<Mutex<dyn Vgic>>> {
+        let vgic = vm
+            .create_vgic(
+                vcpu_count,
+                layout::GIC_V3_DIST_START.raw_value(),
+                layout::GIC_V3_DIST_SIZE,
+                layout::GIC_V3_REDIST_SIZE,
+                layout::GIC_V3_ITS_SIZE,
+                layout::IRQ_NUM,
+            )
+            .map_err(Error::CreateGic)?;
+        self.vgic = Some(vgic.clone());
+        Ok(vgic.clone())
    }

-    pub fn get_gic_device(&self) -> Option<&Arc<Mutex<Box<dyn GicDevice>>>> {
-        self.gic_device.as_ref()
+    pub fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]) {
+        let vgic = self.vgic.as_ref().unwrap().clone();
+        vgic.lock().unwrap().set_gicr_typers(vcpu_states);
    }
 }

@@ -97,3 +117,43 @@ impl InterruptController for Gic {
        self.interrupt_source_group.notifier(irq as InterruptIndex)
    }
 }
+
+pub const GIC_V3_ITS_SNAPSHOT_ID: &str = "gic-v3-its";
+impl Snapshottable for Gic {
+    fn id(&self) -> String {
+        GIC_V3_ITS_SNAPSHOT_ID.to_string()
+    }
+
+    fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
+        let vgic = self.vgic.as_ref().unwrap().clone();
+        let state = vgic.lock().unwrap().state().unwrap();
+        Snapshot::new_from_state(&self.id(), &state)
+    }
+
+    fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
+        let vgic = self.vgic.as_ref().unwrap().clone();
+        vgic.lock()
+            .unwrap()
+            .set_state(&snapshot.to_state(&self.id())?)
+            .map_err(|e| {
+                MigratableError::Restore(anyhow!("Could not restore GICv3ITS state {:?}", e))
+            })?;
+        Ok(())
+    }
+}
+
+impl Pausable for Gic {
+    fn pause(&mut self) -> std::result::Result<(), MigratableError> {
+        // Flush tables to guest RAM
+        let vgic = self.vgic.as_ref().unwrap().clone();
+        vgic.lock().unwrap().save_data_tables().map_err(|e| {
+            MigratableError::Pause(anyhow!(
+                "Could not save GICv3ITS GIC pending tables {:?}",
+                e
+            ))
+        })?;
+        Ok(())
+    }
+}
+impl Transportable for Gic {}
+impl Migratable for Gic {}
--- a/devices/src/interrupt_controller.rs
+++ b/devices/src/interrupt_controller.rs
@@ -24,6 +24,8 @@ pub enum Error {
    UpdateInterrupt(io::Error),
    /// Failed enabling the interrupt.
    EnableInterrupt(io::Error),
+    /// Failed creating GIC device.
+    CreateGic(hypervisor::HypervisorVmError),
 }

 type Result<T> = result::Result<T, Error>;
--- a/devices/src/legacy/debug_port.rs
+++ b/devices/src/legacy/debug_port.rs
@@ -0,0 +1,86 @@
+// Copyright © 2022 Intel Corporation
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+
+use std::fmt;
+use std::time::Instant;
+use vm_device::BusDevice;
+
+/// Debug I/O port, see:
+/// https://www.intel.com/content/www/us/en/support/articles/000005500/boards-and-kits.html
+///
+/// Since we're not a physical platform, we can freely assign code ranges for
+/// debugging specific parts of our virtual platform.
+pub enum DebugIoPortRange {
+    Firmware,
+    Bootloader,
+    Kernel,
+    Userspace,
+    Custom,
+}
+
+#[cfg(target_arch = "x86_64")]
+const DEBUG_IOPORT_PREFIX: &str = "Debug I/O port";
+
+#[cfg(target_arch = "x86_64")]
+impl DebugIoPortRange {
+    fn from_u8(value: u8) -> DebugIoPortRange {
+        match value {
+            0x00..=0x1f => DebugIoPortRange::Firmware,
+            0x20..=0x3f => DebugIoPortRange::Bootloader,
+            0x40..=0x5f => DebugIoPortRange::Kernel,
+            0x60..=0x7f => DebugIoPortRange::Userspace,
+            _ => DebugIoPortRange::Custom,
+        }
+    }
+}
+
+#[cfg(target_arch = "x86_64")]
+impl fmt::Display for DebugIoPortRange {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        match self {
+            DebugIoPortRange::Firmware => write!(f, "{}: Firmware", DEBUG_IOPORT_PREFIX),
+            DebugIoPortRange::Bootloader => write!(f, "{}: Bootloader", DEBUG_IOPORT_PREFIX),
+            DebugIoPortRange::Kernel => write!(f, "{}: Kernel", DEBUG_IOPORT_PREFIX),
+            DebugIoPortRange::Userspace => write!(f, "{}: Userspace", DEBUG_IOPORT_PREFIX),
+            DebugIoPortRange::Custom => write!(f, "{}: Custom", DEBUG_IOPORT_PREFIX),
+        }
+    }
+}
+
+pub struct DebugPort {
+    timestamp: Instant,
+}
+
+impl DebugPort {
+    pub fn new(timestamp: Instant) -> Self {
+        Self { timestamp }
+    }
+}
+
+impl BusDevice for DebugPort {
+    fn read(&mut self, _base: u64, _offset: u64, _data: &mut [u8]) {
+        error!("Invalid read to debug port")
+    }
+
+    fn write(
+        &mut self,
+        _base: u64,
+        _offset: u64,
+        data: &[u8],
+    ) -> Option<std::sync::Arc<std::sync::Barrier>> {
+        let elapsed = self.timestamp.elapsed();
+
+        let code = data[0];
+        warn!(
+            "[{} code 0x{:x}] {}.{:>06} seconds",
+            DebugIoPortRange::from_u8(code),
+            code,
+            elapsed.as_secs(),
+            elapsed.as_micros()
+        );
+
+        None
+    }
+}
--- a/devices/src/legacy/mod.rs
+++ b/devices/src/legacy/mod.rs
@@ -6,6 +6,8 @@
 // found in the LICENSE-BSD-3-Clause file.

 mod cmos;
+#[cfg(target_arch = "x86_64")]
+mod debug_port;
 #[cfg(feature = "fwdebug")]
 mod fwdebug;
 #[cfg(target_arch = "aarch64")]
@@ -18,6 +20,8 @@ mod serial;
 mod uart_pl011;

 pub use self::cmos::Cmos;
+#[cfg(target_arch = "x86_64")]
+pub use self::debug_port::DebugPort;
 #[cfg(feature = "fwdebug")]
 pub use self::fwdebug::FwDebugDevice;
 pub use self::i8042::I8042Device;
--- a/devices/src/legacy/uart_pl011.rs
+++ b/devices/src/legacy/uart_pl011.rs
@@ -10,6 +10,7 @@ use crate::{read_le_u32, write_le_u32};
 use std::collections::VecDeque;
 use std::fmt;
 use std::sync::{Arc, Barrier};
+use std::time::Instant;
 use std::{io, result};
 use versionize::{VersionMap, Versionize, VersionizeResult};
 use versionize_derive::Versionize;
@@ -120,6 +121,7 @@ impl Pl011 {
        id: String,
        irq: Arc<dyn InterruptSourceGroup>,
        out: Option<Box<dyn io::Write + Send>>,
+        timestamp: Instant,
    ) -> Self {
        Self {
            id,
@@ -140,7 +142,7 @@ impl Pl011 {
            read_trigger: 1u32,
            irq,
            out,
-            timestamp: std::time::Instant::now(),
+            timestamp,
        }
    }

@@ -495,6 +497,7 @@ mod tests {
            String::from(SERIAL_NAME),
            Arc::new(TestInterrupt::new(intr_evt.try_clone().unwrap())),
            Some(Box::new(pl011_out.clone())),
+            Instant::now(),
        );

        pl011.write(0, UARTDR as u64, &[b'x', b'y']);
@@ -515,6 +518,7 @@ mod tests {
            String::from(SERIAL_NAME),
            Arc::new(TestInterrupt::new(intr_evt.try_clone().unwrap())),
            Some(Box::new(pl011_out)),
+            Instant::now(),
        );

        // write 1 to the interrupt event fd, so that read doesn't block in case the event fd
--- a/docs/api.md
+++ b/docs/api.md
@@ -89,6 +89,7 @@ Trigger power button of the VM     | `/vm.power-button`   | N/A
 Pause the VM                       | `/vm.pause`          | N/A                       | N/A                      | The VM is booted
 Resume the VM                      | `/vm.resume`         | N/A                       | N/A                      | The VM is paused
 Task a snapshot of the VM          | `/vm.snapshot`       | `/schemas/VmSnapshotConfig`| N/A                     | The VM is paused
+Perform a coredump of the VM       | `/vm.coredump`       | `/schemas/VmCoredumpData` | N/A                      | The VM is paused
 Restore the VM from a snapshot     | `/vm.restore`        | `/schemas/RestoreConfig`  | N/A                      | The VM is created but not booted
 Add/remove CPUs to/from the VM     | `/vm.resize`         | `/schemas/VmResize`       | N/A                      | The VM is booted
 Add/remove memory from the VM      | `/vm.resize`         | `/schemas/VmResize`       | N/A                      | The VM is booted
--- a/docs/device_model.md
+++ b/docs/device_model.md
@@ -6,22 +6,22 @@ This document describes the device model supported by `cloud-hypervisor`.

 | Device | Build configurable | Enabled by default | Runtime configurable |
 | :----: | :----: | :----: | :----: |
-| Serial port | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| RTC/CMOS | :heavy_check_mark: | :heavy_check_mark: | :negative_squared_cross_mark: |
-| I/O APIC | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| i8042 shutdown/reboot | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :negative_squared_cross_mark: |
-| ACPI shutdown/reboot | :negative_squared_cross_mark: | :heavy_check_mark: | :negative_squared_cross_mark: |
-| virtio-blk | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-console | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-iommu | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-net | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-pmem | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-rng | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| virtio-vsock | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| vhost-user-blk | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| vhost-user-fs | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| vhost-user-net | :negative_squared_cross_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
-| VFIO | :heavy_check_mark: | :negative_squared_cross_mark: | :heavy_check_mark: |
+| Serial port | :x: | :x: | :heavy_check_mark: |
+| RTC/CMOS | :heavy_check_mark: | :heavy_check_mark: | :x: |
+| I/O APIC | :x: | :x: | :heavy_check_mark: |
+| i8042 shutdown/reboot | :x: | :x: | :x: |
+| ACPI shutdown/reboot | :x: | :heavy_check_mark: | :x: |
+| virtio-blk | :x: | :x: | :heavy_check_mark: |
+| virtio-console | :x: | :x: | :heavy_check_mark: |
+| virtio-iommu | :x: | :x: | :heavy_check_mark: |
+| virtio-net | :x: | :x: | :heavy_check_mark: |
+| virtio-pmem | :x: | :x: | :heavy_check_mark: |
+| virtio-rng | :x: | :x: | :heavy_check_mark: |
+| virtio-vsock | :x: | :x: | :heavy_check_mark: |
+| vhost-user-blk | :x: | :x: | :heavy_check_mark: |
+| vhost-user-fs | :x: | :x: | :heavy_check_mark: |
+| vhost-user-net | :x: | :x: | :heavy_check_mark: |
+| VFIO | :heavy_check_mark: | :x: | :heavy_check_mark: |

 ## Legacy devices

--- a/docs/io_throttling.md
+++ b/docs/io_throttling.md
@@ -24,8 +24,8 @@ bucket is unbounded in speed which allows for bursts bound in size by
 the amount of tokens available. Once the token bucket is empty,
 consumption speed is bound by the "refill-rate". Similarly, Cloud
 Hypervisor provides another three options for limiting I/O operations,
-i.e., `ops_size` (I/O operations), `bw_one_time_burst` (I/O operations),
-and `bw_refill_time` (ms).
+i.e., `ops_size` (I/O operations), `ops_one_time_burst` (I/O operations),
+and `ops_refill_time` (ms).

 One caveat in the I/O throttling is that every-time the bucket gets
 empty, it will stop I/O operations for a fixed amount of time
--- a/docs/profiling.md
+++ b/docs/profiling.md
@@ -43,3 +43,22 @@ $ perf report -g
 ```

 If profiling with a network device attached either the TAP device must be already created and configured or the profiling must be done as root so that the TAP device can be created.
+
+## Userspace only profiling with LBR
+
+The use of LBR (Last Branch Record; available since Haswell) offers lower
+overhead if only userspace profiling is required. This lower overhead can allow
+a higher frequency of sampling. This also removes the requirement to compile
+with custom `RUSTFLAGS` however debug symbols should still be included:
+
+e.g.
+
+```
+$ perf record --call-graph lbr --all-user --user-callchains -g target/release/cloud-hypervisor \
+        --kernel ~/src/linux/vmlinux \
+        --pmem file=~/workloads/focal.raw \
+        --cpus boot=1 --memory size=1G \
+        --cmdline "root=/dev/pmem0p1 console=ttyS0" \
+        --serial tty --console off \
+        --api-socket=/tmp/api1
+```
--- a/docs/releases.md
+++ b/docs/releases.md
@@ -0,0 +1,103 @@
+# Release Documentation
+
+## Abstract
+
+This document provides guidance to users, downstream maintainers and
+any other consumers of the Cloud Hypervisor project, this document
+describes the release process, release cadence, stability expectations and
+related topics.
+
+## Basic Terms
+
+### Stability
+
+For Cloud Hypervisor the following areas are subject to stability guarantees:
+
+- [REST API](api.md#rest-api)
+- [Command line options](api.md#command-line-interface)
+- [Device Model](device_model.md)
+- Device tree, device list, ACPI, Hyper-V enlightenments and any other
+  features exposed to guest
+- KVM compatibility
+- Rust edition compatibility
+
+This list is incomplete but this document serves as a best effort guide to stability
+across releases.
+
+### Experimental features
+
+Experimental features are under active development and no guarantees are made about their stability.
+
+List of experimental features:
+
+- TDX
+- vfio-user
+- vDPA
+
+### Security
+
+Security fixes should be included in a new point release.
+
+For security issues an advisory will be published via the GitHub security advisory process along with the release. Watching the project on GitHub will notify you of those issues.
+
+## Releases
+
+### Versioning
+
+The versioning scheme uses `MAJOR.POINT` pattern:
+
+- `MAJOR` can introduce incompatible changes along with support for new features. Changes to the [API](api.md#rest-api),
+  [CLI options](api.md#command-line-interface) and [device model](device_model.md)
+  require a notice at least 2 releases in advance for the actual change to take
+  place.
+- `POINT` contains bug fixes and/or security fixes.
+
+### Major Release Cadence
+
+Cloud Hypervisor is under active development. A new major release is issued approximately
+every 6 weeks. Point releases are issued on demand, when important bug fixes are in
+the queue. A major release would receive bug fixes for the next two cycles (~12 weeks)
+and then be considered EOL.
+
+```
+ - Active release support
+E - EOL
+
+        2021                2022                2023 
+         |    |    |    |    |    |    |    |    | 
+18.0     |    |    |  ++++++++E
+19.0     |    |    |    |++++++++E
+20.0     |    |    |    |   ++++++++E
+21.0     |    |    |    |    | ++++++++E
+22.0     |    |    |    |    |    +++++++++E
+23.0     |    |    |    |    |    |  +++++++++E
+
+```
+
+### Major Release Stability Considerations
+
+Snapshot/restore support is not compatible across `MAJOR` versions.
+Live migration support is not compatible across `MAJOR` versions.
+
+### LTS Release Cadence
+
+A regular release is promoted to LTS every 12 months. An LTS release is supported for 18 months. This gives a 6 months window for users to move to the new LTS.
+
+```
+ - Active release support
+E - EOL
+
+        2022                2023               2024                 2025                2026
+         |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |    |
+23.0     |    |+++++++++++++++++++++++++++++E
+43.0     |    |    |    |    |    |+++++++++++++++++++++++++++++E
+63.0     |    |    |    |    |    |    |    |    |    |+++++++++++++++++++++++++++++E
+
+```
+
+### LTS Stablity Considerations
+
+An LTS release is just a `MAJOR` release for which point releases are made for
+longer following the same rules for what can be backported to a `POINT` release.
+The focus lays on critical and security bug fixes which are pulled at the
+maintainer's discretion.
--- a/docs/vhost-user-net-testing.md
+++ b/docs/vhost-user-net-testing.md
@@ -75,8 +75,7 @@ Here is an example how to create a bridge and add two DPDK ports to it
 ovs-vsctl add-br ovsbr0 -- set bridge ovsbr0 datapath_type=netdev
 # create two DPDK ports and add them to the bridge
 ovs-vsctl add-port ovsbr0 vhost-user1 -- set Interface vhost-user1 type=dpdkvhostuser
-ovs-vsctl add-port ovsbr0 vhost-user2 -- set Interface vhost-user2
-type=dpdkvhostuser
+ovs-vsctl add-port ovsbr0 vhost-user2 -- set Interface vhost-user2 type=dpdkvhostuser
 # set the number of rx queues
 ovs-vsctl set Interface vhost-user1 options:n_rxq=2
 ovs-vsctl set Interface vhost-user2 options:n_rxq=2
--- a/event_monitor/Cargo.toml
+++ b/event_monitor/Cargo.toml
@@ -5,7 +5,6 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2021"

 [dependencies]
-libc = "0.2.123"
-serde = { version = "1.0.136", features = ["rc"] }
-serde_derive = "1.0.136"
-serde_json = "1.0.79"
+libc = "0.2.126"
+serde = { version = "1.0.138", features = ["rc", "derive"] }
+serde_json = "1.0.82"
--- a/event_monitor/src/lib.rs
+++ b/event_monitor/src/lib.rs
@@ -3,12 +3,11 @@
 // SPDX-License-Identifier: Apache-2.0
 //

-#[macro_use]
-extern crate serde_derive;
-
+use serde::Serialize;
 use std::borrow::Cow;
 use std::collections::HashMap;
 use std::fs::File;
+use std::io::Write;
 use std::os::unix::io::AsRawFd;
 use std::time::{Duration, Instant};

@@ -50,6 +49,9 @@ pub fn event_log(source: &str, event: &str, properties: Option<&HashMap<Cow<str>
            properties,
        };
        serde_json::to_writer_pretty(file, &e).ok();
+
+        let mut file = file;
+        file.write_all(b"\n\n").ok();
    }
 }

--- a/fuzz/Cargo.lock
+++ b/fuzz/Cargo.lock
@@ -11,9 +11,9 @@ dependencies = [

 [[package]]
 name = "anyhow"
-version = "1.0.56"
+version = "1.0.58"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4361135be9122e0870de935d7c439aef945b9f9ddd4199a553b5270b49c82a27"
+checksum = "bb07d2053ccdbe10e2af2995a2f116c1330396493dc1269f6a91d0ae82e19704"

 [[package]]
 name = "api_client"
@@ -24,9 +24,9 @@ dependencies = [

 [[package]]
 name = "arbitrary"
-version = "1.1.0"
+version = "1.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c38b6b6b79f671c25e1a3e785b7b82d7562ffc9cd3efdc98627e5668a2472490"
+checksum = "5a7924531f38b1970ff630f03eb20a2fde69db5c590c93b0f3482e95dcc5fd60"

 [[package]]
 name = "arc-swap"
@@ -47,7 +47,6 @@ dependencies = [
 "linux-loader",
 "log",
 "serde",
- "serde_derive",
 "thiserror",
 "versionize",
 "versionize_derive",
@@ -128,24 +127,33 @@ checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"

 [[package]]
 name = "clap"
-version = "3.1.8"
+version = "3.2.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "71c47df61d9e16dc010b55dba1952a57d8c215dbb533fd13cdd13369aac73b1c"
+checksum = "190814073e85d238f31ff738fcb0bf6910cedeb73376c87cd69291028966fd83"
 dependencies = [
 "atty",
 "bitflags",
+ "clap_lex",
 "indexmap",
- "lazy_static",
- "os_str_bytes",
+ "once_cell",
 "strsim",
 "termcolor",
 "terminal_size",
 "textwrap",
 ]

+[[package]]
+name = "clap_lex"
+version = "0.2.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2850f2f5a82cbf437dd5af4d49848fbdfc27c157c3d010345776f952765261c5"
+dependencies = [
+ "os_str_bytes",
+]
+
 [[package]]
 name = "cloud-hypervisor"
-version = "22.0.0"
+version = "24.0.0"
 dependencies = [
 "anyhow",
 "api_client",
@@ -208,6 +216,7 @@ dependencies = [
 "bitflags",
 "byteorder",
 "epoll",
+ "hypervisor",
 "libc",
 "log",
 "versionize",
@@ -234,7 +243,6 @@ version = "0.1.0"
 dependencies = [
 "libc",
 "serde",
- "serde_derive",
 "serde_json",
 ]

@@ -244,35 +252,11 @@ version = "0.1.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b643857cf70949306b81d7e92cb9d47add673868edac9863c4a49c42feaf3f1e"

-[[package]]
-name = "gdbstub"
-version = "0.6.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9fa2ca5d6b045de372cef3991f873389b421b4cabcfbe52f7787fae8b8b37906"
-dependencies = [
- "bitflags",
- "cfg-if",
- "log",
- "managed",
- "num-traits",
- "paste",
-]
-
-[[package]]
-name = "gdbstub_arch"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51dc4b5718ac76d21e8605c0966dd32d80273b89b11e6cfef467b04e45934d37"
-dependencies = [
- "gdbstub",
- "num-traits",
-]
-
 [[package]]
 name = "getrandom"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9be70c98951c83b8d2f8f60d7065fa6d5146873094452a1008da8c2f1e4205ad"
+checksum = "4eb1a864a501629691edf6c15a593b7a51eebaa1e8468e9ddc623de7c9b58ec6"
 dependencies = [
 "cfg-if",
 "libc",
@@ -281,9 +265,9 @@ dependencies = [

 [[package]]
 name = "hashbrown"
-version = "0.11.2"
+version = "0.12.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ab5ef0d4909ef3724cc8cce6ccc8572c5c817592e9285f5464f8e86f8bd3726e"
+checksum = "db0d4cf898abf0081f964436dc980e96670a0f36863e4b83aaacdb65c9d7ccc3"

 [[package]]
 name = "hermit-abi"
@@ -306,7 +290,6 @@ dependencies = [
 "libc",
 "log",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "vm-memory",
@@ -325,9 +308,9 @@ dependencies = [

 [[package]]
 name = "indexmap"
-version = "1.8.1"
+version = "1.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0f647032dfaa1f8b6dc29bd3edb7bbef4861b8b8007ebb118d6db284fd59f6ee"
+checksum = "10a35a97730320ffe8e2d410b5d3b69279b98d2c14bdb8b70ea89ecf7888d41e"
 dependencies = [
 "autocfg",
 "hashbrown",
@@ -345,9 +328,9 @@ dependencies = [

 [[package]]
 name = "itoa"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1aab8fc367588b89dcee83ab0fd66b72b50b72fa1904d7095045ace2b0c81c35"
+checksum = "112c678d4050afce233f4f2852bb2eb519230b3cf12f33585275537d7e41578d"

 [[package]]
 name = "kvm-bindings"
@@ -377,9 +360,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"

 [[package]]
 name = "libc"
-version = "0.2.123"
+version = "0.2.126"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb691a747a7ab48abc15c5b42066eaafde10dc427e3b6ee2a1cf43db04c763bd"
+checksum = "349d5a591cd28b49e1d1037471617a32ddcda5731b99419008085f72d5a53836"

 [[package]]
 name = "libfuzzer-sys"
@@ -403,25 +386,13 @@ dependencies = [

 [[package]]
 name = "log"
-version = "0.4.16"
+version = "0.4.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6389c490849ff5bc16be905ae24bc913a9c8892e19b2341dbc175e14c341c2b8"
+checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
 dependencies = [
 "cfg-if",
 ]

-[[package]]
-name = "managed"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0ca88d725a0a943b096803bd34e73a4437208b6077654cc4ecb2947a5f91618d"
-
-[[package]]
-name = "memchr"
-version = "2.4.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "308cc39be01b73d0d18f82a0e7b2a3df85245f84af96fdddc5d202d27e47b86a"
-
 [[package]]
 name = "micro_http"
 version = "0.1.0"
@@ -458,20 +429,11 @@ dependencies = [
 "vmm-sys-util",
 ]

-[[package]]
-name = "num-traits"
-version = "0.2.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9a64b1ec5cda2586e284722486d802acf1f7dbdc623e2bfc57e65ca1cd099290"
-dependencies = [
- "autocfg",
-]
-
 [[package]]
 name = "once_cell"
-version = "1.10.0"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87f3e037eac156d1775da914196f0f37741a274155e34a0b7e427c35d2a2ecb9"
+checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"

 [[package]]
 name = "option_parser"
@@ -479,18 +441,9 @@ version = "0.1.0"

 [[package]]
 name = "os_str_bytes"
-version = "6.0.0"
+version = "6.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e22443d1643a904602595ba1cd8f7d896afe56d26712531c5ff73a15b2fbf64"
-dependencies = [
- "memchr",
-]
-
-[[package]]
-name = "paste"
-version = "1.0.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c520e05135d6e763148b6426a837e239041653ba7becd2e538c076c738025fc"
+checksum = "21326818e99cfe6ce1e524c2a805c189a99b5ae555a35d19f9a284b427d86afa"

 [[package]]
 name = "pci"
@@ -502,7 +455,6 @@ dependencies = [
 "libc",
 "log",
 "serde",
- "serde_derive",
 "thiserror",
 "versionize",
 "versionize_derive",
@@ -518,11 +470,11 @@ dependencies = [

 [[package]]
 name = "proc-macro2"
-version = "1.0.37"
+version = "1.0.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
+checksum = "dd96a1e8ed2596c337f8eae5f24924ec83f5ad5ab21ea8e455d3566c69fbcaf7"
 dependencies = [
- "unicode-xid",
+ "unicode-ident",
 ]

 [[package]]
@@ -538,9 +490,9 @@ dependencies = [

 [[package]]
 name = "quote"
-version = "1.0.18"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a1feb54ed693b93a84e14094943b84b7c4eae204c512b7ccb95ab0c66d278ad1"
+checksum = "3bcdf212e9776fbcb2d23ab029360416bb1706b1aea2d1a5ba002727cbcab804"
 dependencies = [
 "proc-macro2",
 ]
@@ -556,9 +508,9 @@ dependencies = [

 [[package]]
 name = "remain"
-version = "0.2.2"
+version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "70ba1e78fa68412cb93ef642fd4d20b9a941be49ee9333875ebaf13112673ea7"
+checksum = "0c35270ea384ac1762895831cc8acb96f171468e52cec82ed9186f9416209fa4"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -576,9 +528,9 @@ dependencies = [

 [[package]]
 name = "ryu"
-version = "1.0.9"
+version = "1.0.10"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "73b4b750c782965c211b42f022f59af1fbceabdd026623714f104152f1ec149f"
+checksum = "f3f6f92acf49d1b98f7a81226834412ada05458b7364277387724a237f062695"

 [[package]]
 name = "seccompiler"
@@ -591,21 +543,24 @@ dependencies = [

 [[package]]
 name = "semver"
-version = "1.0.7"
+version = "1.0.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d65bd28f48be7196d222d95b9243287f48d27aca604e08497513019ff0502cc4"
+checksum = "a2333e6df6d6598f2b1974829f853c2b4c5f4a6e503c10af918081aa6f8564e1"

 [[package]]
 name = "serde"
-version = "1.0.136"
+version = "1.0.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce31e24b01e1e524df96f1c2fdd054405f8d7376249a5110886fb4b658484789"
+checksum = "1578c6245786b9d168c5447eeacfb96856573ca56c9d68fdcf394be134882a47"
+dependencies = [
+ "serde_derive",
+]

 [[package]]
 name = "serde_derive"
-version = "1.0.136"
+version = "1.0.138"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "08597e7152fcd306f41838ed3e37be9eaeed2b61c42e2117266a554fab4662f9"
+checksum = "023e9b1467aef8a10fb88f25611870ada9800ef7e22afce356bb0d2387b6f27c"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -614,9 +569,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.79"
+version = "1.0.82"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8e8d9fa5c3b304765ce1fd9c4c8a3de2c8db365a5b91be52f186efc675681d95"
+checksum = "82c2c1fdcd807d1098552c5b9a36e425e42e9fbd7c6a37a8425f390f781f7fa7"
 dependencies = [
 "itoa",
 "ryu",
@@ -625,9 +580,9 @@ dependencies = [

 [[package]]
 name = "signal-hook"
-version = "0.3.13"
+version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "647c97df271007dcea485bb74ffdb57f2e683f1306c854f468a0c244badabf2d"
+checksum = "a253b5e89e2698464fc26b545c9edceb338e18a89effeeecfea192c3025be29d"
 dependencies = [
 "libc",
 "signal-hook-registry",
@@ -656,13 +611,13 @@ checksum = "73473c0e59e6d5812c5dfe2a064a6444949f089e20eec9a2e5506596494e4623"

 [[package]]
 name = "syn"
-version = "1.0.91"
+version = "1.0.98"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
+checksum = "c50aef8a904de4c23c788f104b7dddc7d6f79c647c7c8ce4cc8f73eb0ca773dd"
 dependencies = [
 "proc-macro2",
 "quote",
- "unicode-xid",
+ "unicode-ident",
 ]

 [[package]]
@@ -695,18 +650,18 @@ dependencies = [

 [[package]]
 name = "thiserror"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "854babe52e4df1653706b98fcfc05843010039b406875930a70e4d9644e5c417"
+checksum = "bd829fe32373d27f76265620b5309d0340cb8550f523c1dda251d6298069069a"
 dependencies = [
 "thiserror-impl",
 ]

 [[package]]
 name = "thiserror-impl"
-version = "1.0.30"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "aa32fd3f627f367fe16f893e2597ae3c05020f8bba2666a4e6ea73d377e5714b"
+checksum = "0396bc89e626244658bef819e22d0cc459e795a5ebe878e6ec336d1674a8d79a"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -714,16 +669,16 @@ dependencies = [
 ]

 [[package]]
-name = "unicode-xid"
-version = "0.2.2"
+name = "unicode-ident"
+version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
+checksum = "5bd2fe26506023ed7b5e1e315add59d6f584c621d037f9368fea9cfb988f368c"

 [[package]]
 name = "uuid"
-version = "0.8.2"
+version = "1.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc5cf98d8186244414c848017f0e2676b3fcb46807f6668a97dfe67359a3c4b7"
+checksum = "dd6469f4314d5f1ffec476e05f17cc9a78bc7a27a6a857842170bdf8d6f98d2f"
 dependencies = [
 "getrandom",
 ]
@@ -847,7 +802,6 @@ dependencies = [
 "rate_limiter",
 "seccompiler",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "versionize",
@@ -865,9 +819,9 @@ dependencies = [

 [[package]]
 name = "virtio-queue"
-version = "0.2.0"
+version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3785325315e6496fa88673842ee6cd198b9658e88e8b0e1ad48a5dc818b221dc"
+checksum = "88f2d73c184c18f8acc32dab77fcb6e3af92d53262538d3a68aa474810d6863c"
 dependencies = [
 "log",
 "vm-memory",
@@ -888,8 +842,8 @@ name = "vm-device"
 version = "0.1.0"
 dependencies = [
 "anyhow",
+ "hypervisor",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "vfio-ioctls",
@@ -904,9 +858,9 @@ source = "git+https://github.com/rust-vmm/vm-fdt?branch=main#720e48e435b791ec6cb

 [[package]]
 name = "vm-memory"
-version = "0.7.0"
+version = "0.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "339d4349c126fdcd87e034631d7274370cf19eb0e87b33166bcd956589fc72c5"
+checksum = "767ed8aaebbff902e02e6d3749dc2baef55e46565f8a6414a065e5baee4b4a81"
 dependencies = [
 "arc-swap",
 "libc",
@@ -919,7 +873,6 @@ version = "0.1.0"
 dependencies = [
 "anyhow",
 "serde",
- "serde_derive",
 "serde_json",
 "thiserror",
 "versionize",
@@ -951,21 +904,18 @@ dependencies = [
 "devices",
 "epoll",
 "event_monitor",
- "gdbstub",
- "gdbstub_arch",
 "hypervisor",
- "lazy_static",
 "libc",
 "linux-loader",
 "log",
 "micro_http",
 "net_util",
+ "once_cell",
 "option_parser",
 "pci",
 "qcow",
 "seccompiler",
 "serde",
- "serde_derive",
 "serde_json",
 "signal-hook",
 "thiserror",
@@ -999,9 +949,9 @@ dependencies = [

 [[package]]
 name = "wasi"
-version = "0.10.2+wasi-snapshot-preview1"
+version = "0.11.0+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
+checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"

 [[package]]
 name = "winapi"
--- a/fuzz/Cargo.toml
+++ b/fuzz/Cargo.toml
@@ -10,16 +10,16 @@ cargo-fuzz = true

 [dependencies]
 block_util = { path = "../block_util" }
-libc = "0.2.123"
+libc = "0.2.126"
 libfuzzer-sys = "0.4.3"
 qcow = { path = "../qcow" }
 seccompiler = "0.2.0"
 vhdx = { path = "../vhdx" }
 virtio-devices = { path = "../virtio-devices" }
-virtio-queue = "0.2.0"
+virtio-queue = "0.4.0"
 vmm-sys-util = "0.9.0"
 vm-virtio = { path = "../vm-virtio" }
-vm-memory = "0.7.0"
+vm-memory = "0.8.0"

 [dependencies.cloud-hypervisor]
 path = ".."
--- a/hypervisor/Cargo.toml
+++ b/hypervisor/Cargo.toml
@@ -11,19 +11,18 @@ mshv = ["mshv-ioctls", "mshv-bindings"]
 tdx = []

 [dependencies]
-anyhow = "1.0.56"
+anyhow = "1.0.58"
 epoll = "4.3.1"
-thiserror = "1.0.30"
-libc = "0.2.123"
-log = "0.4.16"
+thiserror = "1.0.31"
+libc = "0.2.126"
+log = "0.4.17"
 kvm-ioctls = { version = "0.11.0", optional = true }
 kvm-bindings = { git = "https://github.com/cloud-hypervisor/kvm-bindings", branch = "ch-v0.5.0-tdx", features = ["with-serde", "fam-wrappers"], optional  = true }
-mshv-bindings = {git = "https://github.com/rust-vmm/mshv", branch = "main", features = ["with-serde", "fam-wrappers"], optional  = true }
+mshv-bindings = { git = "https://github.com/rust-vmm/mshv", branch = "main", features = ["with-serde", "fam-wrappers"], optional  = true }
 mshv-ioctls = { git = "https://github.com/rust-vmm/mshv", branch = "main", optional  = true}
-serde = { version = "1.0.136", features = ["rc"] }
-serde_derive = "1.0.136"
-serde_json = "1.0.79"
-vm-memory = { version = "0.7.0", features = ["backend-mmap", "backend-atomic"] }
+serde = { version = "1.0.138", features = ["rc", "derive"] }
+serde_json = "1.0.82"
+vm-memory = { version = "0.8.0", features = ["backend-mmap", "backend-atomic"] }
 vmm-sys-util = { version = "0.9.0", features = ["with-serde"] }

 [target.'cfg(target_arch = "x86_64")'.dependencies.iced-x86]
--- a/hypervisor/src/arch/aarch64/gic.rs
+++ b/hypervisor/src/arch/aarch64/gic.rs
@@ -0,0 +1,59 @@
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
+
+use crate::{CpuState, Device, GicState, HypervisorDeviceError, HypervisorVmError};
+use std::any::Any;
+use std::result;
+use std::sync::Arc;
+
+/// Errors thrown while setting up the VGIC.
+#[derive(Debug)]
+pub enum Error {
+    /// Error while calling KVM ioctl for setting up the global interrupt controller.
+    CreateGic(HypervisorVmError),
+    /// Error while setting device attributes for the GIC.
+    SetDeviceAttribute(HypervisorDeviceError),
+    /// Error while getting device attributes for the GIC.
+    GetDeviceAttribute(HypervisorDeviceError),
+}
+pub type Result<T> = result::Result<T, Error>;
+
+/// Hypervisor agnostic interface for a virtualized GIC
+pub trait Vgic: Send + Sync {
+    /// Returns the fdt compatibility property of the device
+    fn fdt_compatibility(&self) -> &str;
+
+    /// Returns the maint_irq fdt property of the device
+    fn fdt_maint_irq(&self) -> u32;
+
+    /// Returns an array with GIC device properties
+    fn device_properties(&self) -> [u64; 4];
+
+    /// Returns the number of vCPUs this GIC handles
+    fn vcpu_count(&self) -> u64;
+
+    /// Returns whether the GIC device is MSI compatible or not
+    fn msi_compatible(&self) -> bool;
+
+    /// Returns the MSI compatibility property of the device
+    fn msi_compatibility(&self) -> &str;
+
+    /// Returns the MSI reg property of the device
+    fn msi_properties(&self) -> [u64; 2];
+
+    fn set_its_device(&mut self, its_device: Option<Arc<dyn Device>>);
+
+    /// Get the values of GICR_TYPER for each vCPU.
+    fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]);
+
+    /// Downcast the trait object to its concrete type.
+    fn as_any_concrete_mut(&mut self) -> &mut dyn Any;
+
+    /// Save the state of GICv3ITS.
+    fn state(&self) -> Result<GicState>;
+
+    /// Restore the state of GICv3ITS.
+    fn set_state(&mut self, state: &GicState) -> Result<()>;
+
+    /// Saves GIC internal data tables into RAM.
+    fn save_data_tables(&self) -> Result<()>;
+}
--- a/hypervisor/src/arch/aarch64/mod.rs
+++ b/hypervisor/src/arch/aarch64/mod.rs
@@ -0,0 +1,3 @@
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
+
+pub mod gic;
--- a/hypervisor/src/arch/emulator/mod.rs
+++ b/hypervisor/src/arch/emulator/mod.rs
@@ -99,7 +99,7 @@ pub enum EmulationError<T: Debug> {
 /// A CpuState is an architecture specific type, representing a CPU state.
 /// The emulator and its instruction handlers modify a given CPU state and
 /// eventually ask the platform to commit it back through `set_cpu_state`.
-pub trait PlatformEmulator: Send + Sync {
+pub trait PlatformEmulator {
    type CpuState: Clone;

    /// Read guest memory into a u8 slice.
--- a/hypervisor/src/arch/mod.rs
+++ b/hypervisor/src/arch/mod.rs
@@ -10,9 +10,14 @@
 //
 // Copyright © 2020, Microsoft Corporation
 //
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
+//

 pub mod emulator;

 #[cfg(target_arch = "x86_64")]
 #[macro_use]
 pub mod x86;
+
+#[cfg(target_arch = "aarch64")]
+pub mod aarch64;
--- a/hypervisor/src/arch/x86/emulator/instructions/mod.rs
+++ b/hypervisor/src/arch/x86/emulator/instructions/mod.rs
@@ -28,14 +28,11 @@ fn get_op<T: CpuStateManager>(
        )));
    }

-    match op_size {
-        1 | 2 | 4 | 8 => {}
-        _ => {
-            return Err(PlatformError::InvalidOperand(anyhow!(
-                "Invalid operand size {:?}",
-                op_size
-            )))
-        }
+    if !matches!(op_size, 1 | 2 | 4 | 8) {
+        return Err(PlatformError::InvalidOperand(anyhow!(
+            "Invalid operand size {:?}",
+            op_size
+        )));
    }

    let value = match insn
@@ -81,14 +78,11 @@ fn set_op<T: CpuStateManager>(
        )));
    }

-    match op_size {
-        1 | 2 | 4 | 8 => {}
-        _ => {
-            return Err(PlatformError::InvalidOperand(anyhow!(
-                "Invalid operand size {:?}",
-                op_size
-            )))
-        }
+    if !matches!(op_size, 1 | 2 | 4 | 8) {
+        return Err(PlatformError::InvalidOperand(anyhow!(
+            "Invalid operand size {:?}",
+            op_size
+        )));
    }

    match insn
--- a/hypervisor/src/arch/x86/emulator/mod.rs
+++ b/hypervisor/src/arch/x86/emulator/mod.rs
@@ -6,9 +6,8 @@

 use crate::arch::emulator::{EmulationError, EmulationResult, PlatformEmulator, PlatformError};
 use crate::arch::x86::emulator::instructions::*;
-use crate::arch::x86::regs::*;
-use crate::arch::x86::*;
-use crate::arch::x86::{Exception, SegmentRegisterOps};
+use crate::arch::x86::regs::{CR0_PE, EFER_LMA};
+use crate::arch::x86::{segment_type_expand_down, segment_type_ro, Exception, SegmentRegisterOps};
 use crate::x86_64::{SegmentRegister, SpecialRegisters, StandardRegisters};
 use anyhow::Context;
 use iced_x86::*;
@@ -17,7 +16,7 @@ use iced_x86::*;
 mod instructions;

 /// x86 CPU modes
-#[derive(Debug, PartialEq)]
+#[derive(Debug, PartialEq, Eq)]
 pub enum CpuMode {
    /// Real mode
    Real,
--- a/hypervisor/src/cpu.rs
+++ b/hypervisor/src/cpu.rs
@@ -12,6 +12,12 @@
 use crate::aarch64::VcpuInit;
 #[cfg(target_arch = "aarch64")]
 use crate::aarch64::{RegList, Register, StandardRegisters};
+#[cfg(feature = "tdx")]
+use crate::kvm::{TdxExitDetails, TdxExitStatus};
+#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
+use crate::x86_64::SuspendRegisters;
+#[cfg(target_arch = "x86_64")]
+use crate::x86_64::Xsave;
 #[cfg(target_arch = "x86_64")]
 use crate::x86_64::{CpuId, LapicState};
 #[cfg(target_arch = "x86_64")]
@@ -23,12 +29,6 @@ use crate::CpuState;
 use crate::DeviceAttr;
 #[cfg(feature = "kvm")]
 use crate::MpState;
-#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
-use crate::SuspendRegisters;
-#[cfg(target_arch = "x86_64")]
-use crate::Xsave;
-#[cfg(feature = "tdx")]
-use crate::{TdxExitDetails, TdxExitStatus};
 use thiserror::Error;
 #[cfg(all(feature = "kvm", target_arch = "x86_64"))]
 use vm_memory::GuestAddress;
@@ -453,6 +453,11 @@ pub trait Vcpu: Send + Sync {
    #[cfg(any(target_arch = "arm", target_arch = "aarch64"))]
    fn read_mpidr(&self) -> Result<u64>;
    ///
+    /// Configure core registers for a given CPU.
+    ///
+    #[cfg(any(target_arch = "arm", target_arch = "aarch64"))]
+    fn setup_regs(&self, cpu_id: u8, boot_ip: u64, fdt_start: u64) -> Result<()>;
+    ///
    /// Retrieve the vCPU state.
    /// This function is necessary to snapshot the VM
    ///
--- a/hypervisor/src/hypervisor.rs
+++ b/hypervisor/src/hypervisor.rs
@@ -7,13 +7,13 @@
 // Copyright 2018-2019 CrowdStrike, Inc.
 //
 //
+#[cfg(feature = "tdx")]
+use crate::kvm::TdxCapabilities;
 use crate::vm::Vm;
 #[cfg(target_arch = "x86_64")]
 use crate::x86_64::CpuId;
 #[cfg(target_arch = "x86_64")]
 use crate::x86_64::MsrList;
-#[cfg(feature = "tdx")]
-use crate::TdxCapabilities;
 use std::sync::Arc;
 use thiserror::Error;

@@ -66,6 +66,11 @@ pub enum HypervisorError {
    ///
    #[error("Failed to retrieve TDX capabilities:{0}")]
    TdxCapabilities(#[source] anyhow::Error),
+    ///
+    /// Failed to set partition property
+    ///
+    #[error("Failed to set partition property:{0}")]
+    SetPartitionProperty(#[source] anyhow::Error),
 }

 ///
--- a/hypervisor/src/kvm/aarch64/gic/dist_regs.rs
+++ b/hypervisor/src/kvm/aarch64/gic/dist_regs.rs
@@ -1,11 +1,11 @@
 // Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0

-use super::{Error, Result};
-use crate::layout::IRQ_BASE;
-use hypervisor::kvm::kvm_bindings::{
+use crate::arch::aarch64::gic::{Error, Result};
+use crate::kvm::kvm_bindings::{
    kvm_device_attr, KVM_DEV_ARM_VGIC_GRP_DIST_REGS, KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
 };
+use crate::Device;
 use std::sync::Arc;

 /*
@@ -77,12 +77,7 @@ static VGIC_DIST_REGS: &[DistReg] = &[
    VGIC_DIST_REG!(GICD_IPRIORITYR, 8, 0),
 ];

-fn dist_attr_access(
-    gic: &Arc<dyn hypervisor::Device>,
-    offset: u32,
-    val: &u32,
-    set: bool,
-) -> Result<()> {
+fn dist_attr_access(gic: &Arc<dyn Device>, offset: u32, val: &u32, set: bool) -> Result<()> {
    let mut gic_dist_attr = kvm_device_attr {
        group: KVM_DEV_ARM_VGIC_GRP_DIST_REGS,
        attr: offset as u64,
@@ -100,18 +95,18 @@ fn dist_attr_access(
 }

 /// Get the distributor control register.
-pub fn read_ctlr(gic: &Arc<dyn hypervisor::Device>) -> Result<u32> {
+pub fn read_ctlr(gic: &Arc<dyn Device>) -> Result<u32> {
    let val: u32 = 0;
    dist_attr_access(gic, GICD_CTLR, &val, false)?;
    Ok(val)
 }

 /// Set the distributor control register.
-pub fn write_ctlr(gic: &Arc<dyn hypervisor::Device>, val: u32) -> Result<()> {
+pub fn write_ctlr(gic: &Arc<dyn Device>, val: u32) -> Result<()> {
    dist_attr_access(gic, GICD_CTLR, &val, true)
 }

-fn get_interrupts_num(gic: &Arc<dyn hypervisor::Device>) -> Result<u32> {
+fn get_interrupts_num(gic: &Arc<dyn Device>) -> Result<u32> {
    let num_irq = 0;

    let mut nr_irqs_attr = kvm_device_attr {
@@ -125,7 +120,12 @@ fn get_interrupts_num(gic: &Arc<dyn hypervisor::Device>) -> Result<u32> {
    Ok(num_irq)
 }

-fn compute_reg_len(gic: &Arc<dyn hypervisor::Device>, reg: &DistReg, base: u32) -> Result<u32> {
+fn compute_reg_len(gic: &Arc<dyn Device>, reg: &DistReg, base: u32) -> Result<u32> {
+    // FIXME:
+    // Redefine some GIC constants to avoid the dependency on `layout` crate.
+    // This is temporary solution, will be fixed in future refactoring.
+    const LAYOUT_IRQ_BASE: u32 = 32;
+
    let mut end = base;
    let num_irq = get_interrupts_num(gic)?;
    if reg.length > 0 {
@@ -138,8 +138,8 @@ fn compute_reg_len(gic: &Arc<dyn hypervisor::Device>, reg: &DistReg, base: u32)
        // This is the type of register that takes into account the number of interrupts
        // that the model has. It is also the type of register where
        // a register relates to multiple interrupts.
-        end = base + (reg.bpi as u32 * (num_irq - IRQ_BASE) / 8);
-        if reg.bpi as u32 * (num_irq - IRQ_BASE) % 8 > 0 {
+        end = base + (reg.bpi as u32 * (num_irq - LAYOUT_IRQ_BASE) / 8);
+        if reg.bpi as u32 * (num_irq - LAYOUT_IRQ_BASE) % 8 > 0 {
            end += REG_SIZE as u32;
        }
    }
@@ -147,7 +147,7 @@ fn compute_reg_len(gic: &Arc<dyn hypervisor::Device>, reg: &DistReg, base: u32)
 }

 /// Set distributor registers of the GIC.
-pub fn set_dist_regs(gic: &Arc<dyn hypervisor::Device>, state: &[u32]) -> Result<()> {
+pub fn set_dist_regs(gic: &Arc<dyn Device>, state: &[u32]) -> Result<()> {
    let mut idx = 0;

    for dreg in VGIC_DIST_REGS {
@@ -164,7 +164,7 @@ pub fn set_dist_regs(gic: &Arc<dyn hypervisor::Device>, state: &[u32]) -> Result
    Ok(())
 }
 /// Get distributor registers of the GIC.
-pub fn get_dist_regs(gic: &Arc<dyn hypervisor::Device>) -> Result<Vec<u32>> {
+pub fn get_dist_regs(gic: &Arc<dyn Device>) -> Result<Vec<u32>> {
    let mut state = Vec::new();

    for dreg in VGIC_DIST_REGS {
--- a/hypervisor/src/kvm/aarch64/gic/icc_regs.rs
+++ b/hypervisor/src/kvm/aarch64/gic/icc_regs.rs
@@ -1,13 +1,15 @@
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
 // Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0

-use super::{Error, Result};
-use hypervisor::kvm::kvm_bindings::{
+use crate::arch::aarch64::gic::{Error, Result};
+use crate::kvm::kvm_bindings::{
    kvm_device_attr, KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS, KVM_REG_ARM64_SYSREG_CRM_MASK,
    KVM_REG_ARM64_SYSREG_CRM_SHIFT, KVM_REG_ARM64_SYSREG_CRN_MASK, KVM_REG_ARM64_SYSREG_CRN_SHIFT,
    KVM_REG_ARM64_SYSREG_OP0_MASK, KVM_REG_ARM64_SYSREG_OP0_SHIFT, KVM_REG_ARM64_SYSREG_OP1_MASK,
    KVM_REG_ARM64_SYSREG_OP1_SHIFT, KVM_REG_ARM64_SYSREG_OP2_MASK, KVM_REG_ARM64_SYSREG_OP2_SHIFT,
 };
+use crate::Device;
 use std::sync::Arc;

 const KVM_DEV_ARM_VGIC_V3_MPIDR_SHIFT: u32 = 32;
@@ -78,7 +80,7 @@ static VGIC_ICC_REGS: &[u64] = &[
 ];

 fn icc_attr_access(
-    gic: &Arc<dyn hypervisor::Device>,
+    gic: &Arc<dyn Device>,
    offset: u64,
    typer: u64,
    val: &u32,
@@ -101,7 +103,7 @@ fn icc_attr_access(
 }

 /// Get ICC registers.
-pub fn get_icc_regs(gic: &Arc<dyn hypervisor::Device>, gicr_typer: &[u64]) -> Result<Vec<u32>> {
+pub fn get_icc_regs(gic: &Arc<dyn Device>, gicr_typer: &[u64]) -> Result<Vec<u32>> {
    let mut state: Vec<u32> = Vec::new();
    // We need this for the ICC_AP<m>R<n>_EL1 registers.
    let mut num_priority_bits = 0;
@@ -154,11 +156,7 @@ pub fn get_icc_regs(gic: &Arc<dyn hypervisor::Device>, gicr_typer: &[u64]) -> Re
 }

 /// Set ICC registers.
-pub fn set_icc_regs(
-    gic: &Arc<dyn hypervisor::Device>,
-    gicr_typer: &[u64],
-    state: &[u32],
-) -> Result<()> {
+pub fn set_icc_regs(gic: &Arc<dyn Device>, gicr_typer: &[u64], state: &[u32]) -> Result<()> {
    let mut num_priority_bits = 0;
    let mut idx = 0;
    for ix in gicr_typer {
--- a/hypervisor/src/kvm/aarch64/gic/mod.rs
+++ b/hypervisor/src/kvm/aarch64/gic/mod.rs
@@ -0,0 +1,615 @@
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
+
+mod dist_regs;
+mod icc_regs;
+mod redist_regs;
+
+use crate::arch::aarch64::gic::{Error, Result, Vgic};
+use crate::kvm::kvm_bindings;
+use crate::{CpuState, Device, Vm};
+use dist_regs::{get_dist_regs, read_ctlr, set_dist_regs, write_ctlr};
+use icc_regs::{get_icc_regs, set_icc_regs};
+use redist_regs::{construct_gicr_typers, get_redist_regs, set_redist_regs};
+use serde::{Deserialize, Serialize};
+use std::any::Any;
+use std::convert::TryInto;
+use std::sync::Arc;
+
+const GITS_CTLR: u32 = 0x0000;
+const GITS_IIDR: u32 = 0x0004;
+const GITS_CBASER: u32 = 0x0080;
+const GITS_CWRITER: u32 = 0x0088;
+const GITS_CREADR: u32 = 0x0090;
+const GITS_BASER: u32 = 0x0100;
+
+/// Access an ITS device attribute.
+///
+/// This is a helper function to get/set the ITS device attribute depending
+/// the bool parameter `set` provided.
+pub fn gicv3_its_attr_access(
+    its_device: &Arc<dyn Device>,
+    group: u32,
+    attr: u32,
+    val: &u64,
+    set: bool,
+) -> Result<()> {
+    let mut gicv3_its_attr = kvm_bindings::kvm_device_attr {
+        group,
+        attr: attr as u64,
+        addr: val as *const u64 as u64,
+        flags: 0,
+    };
+    if set {
+        its_device
+            .set_device_attr(&gicv3_its_attr)
+            .map_err(Error::SetDeviceAttribute)
+    } else {
+        its_device
+            .get_device_attr(&mut gicv3_its_attr)
+            .map_err(Error::GetDeviceAttribute)
+    }
+}
+
+/// Function that saves/restores ITS tables into guest RAM.
+///
+/// The tables get flushed to guest RAM whenever the VM gets stopped.
+pub fn gicv3_its_tables_access(its_device: &Arc<dyn Device>, save: bool) -> Result<()> {
+    let attr = if save {
+        u64::from(kvm_bindings::KVM_DEV_ARM_ITS_SAVE_TABLES)
+    } else {
+        u64::from(kvm_bindings::KVM_DEV_ARM_ITS_RESTORE_TABLES)
+    };
+
+    let init_gic_attr = kvm_bindings::kvm_device_attr {
+        group: kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
+        attr,
+        addr: 0,
+        flags: 0,
+    };
+    its_device
+        .set_device_attr(&init_gic_attr)
+        .map_err(Error::SetDeviceAttribute)
+}
+
+pub struct KvmGicV3Its {
+    /// The hypervisor agnostic device for the GicV3
+    device: Arc<dyn Device>,
+
+    /// The hypervisor agnostic device for the Its device
+    its_device: Option<Arc<dyn Device>>,
+
+    /// Vector holding values of GICR_TYPER for each vCPU
+    gicr_typers: Vec<u64>,
+
+    /// GIC distributor address
+    dist_addr: u64,
+
+    /// GIC distributor size
+    dist_size: u64,
+
+    /// GIC distributors address
+    redists_addr: u64,
+
+    /// GIC distributors size
+    redists_size: u64,
+
+    /// GIC MSI address
+    msi_addr: u64,
+
+    /// GIC MSI size
+    msi_size: u64,
+
+    /// Number of CPUs handled by the device
+    vcpu_count: u64,
+}
+
+#[derive(Clone, Default, Serialize, Deserialize)]
+pub struct Gicv3ItsState {
+    dist: Vec<u32>,
+    rdist: Vec<u32>,
+    icc: Vec<u32>,
+    // special register that enables interrupts and affinity routing
+    gicd_ctlr: u32,
+    its_ctlr: u64,
+    its_iidr: u64,
+    its_cbaser: u64,
+    its_cwriter: u64,
+    its_creadr: u64,
+    its_baser: [u64; 8],
+}
+
+impl KvmGicV3Its {
+    /// Device trees specific constants
+    pub const ARCH_GIC_V3_MAINT_IRQ: u32 = 9;
+
+    /// Returns the GIC version of the device
+    fn version() -> u32 {
+        kvm_bindings::kvm_device_type_KVM_DEV_TYPE_ARM_VGIC_V3
+    }
+
+    fn device(&self) -> &Arc<dyn Device> {
+        &self.device
+    }
+
+    fn its_device(&self) -> Option<&Arc<dyn Device>> {
+        self.its_device.as_ref()
+    }
+
+    /// Setup the device-specific attributes
+    fn init_device_attributes(&mut self, vm: &dyn Vm, nr_irqs: u32) -> Result<()> {
+        // GicV3 part attributes
+        /* Setting up the distributor attribute.
+         We are placing the GIC below 1GB so we need to substract the size of the distributor.
+        */
+        Self::set_device_attribute(
+            self.device(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
+            u64::from(kvm_bindings::KVM_VGIC_V3_ADDR_TYPE_DIST),
+            &self.dist_addr as *const u64 as u64,
+            0,
+        )?;
+
+        /* Setting up the redistributors' attribute.
+        We are calculating here the start of the redistributors address. We have one per CPU.
+        */
+        Self::set_device_attribute(
+            self.device(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
+            u64::from(kvm_bindings::KVM_VGIC_V3_ADDR_TYPE_REDIST),
+            &self.redists_addr as *const u64 as u64,
+            0,
+        )?;
+
+        // ITS part attributes
+        let mut its_device = kvm_bindings::kvm_create_device {
+            type_: kvm_bindings::kvm_device_type_KVM_DEV_TYPE_ARM_VGIC_ITS,
+            fd: 0,
+            flags: 0,
+        };
+
+        let its_fd = vm
+            .create_device(&mut its_device)
+            .map_err(Error::CreateGic)?;
+
+        Self::set_device_attribute(
+            &its_fd,
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ADDR,
+            u64::from(kvm_bindings::KVM_VGIC_ITS_ADDR_TYPE),
+            &self.msi_addr as *const u64 as u64,
+            0,
+        )?;
+
+        Self::set_device_attribute(
+            &its_fd,
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
+            u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_CTRL_INIT),
+            0,
+            0,
+        )?;
+
+        self.set_its_device(Some(its_fd));
+
+        /* We need to tell the kernel how many irqs to support with this vgic.
+         * See the `layout` module for details.
+         */
+        let nr_irqs_ptr = &nr_irqs as *const u32;
+        Self::set_device_attribute(
+            self.device(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_NR_IRQS,
+            0,
+            nr_irqs_ptr as u64,
+            0,
+        )?;
+
+        /* Finalize the GIC.
+         * See https://code.woboq.org/linux/linux/virt/kvm/arm/vgic/vgic-kvm-device.c.html#211.
+         */
+        Self::set_device_attribute(
+            self.device(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
+            u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_CTRL_INIT),
+            0,
+            0,
+        )
+    }
+
+    /// Create a KVM Vgic device
+    fn create_device(vm: &dyn Vm) -> Result<Arc<dyn Device>> {
+        let mut gic_device = kvm_bindings::kvm_create_device {
+            type_: Self::version(),
+            fd: 0,
+            flags: 0,
+        };
+
+        vm.create_device(&mut gic_device).map_err(Error::CreateGic)
+    }
+
+    /// Set a GIC device attribute
+    fn set_device_attribute(
+        device: &Arc<dyn Device>,
+        group: u32,
+        attr: u64,
+        addr: u64,
+        flags: u32,
+    ) -> Result<()> {
+        let attr = kvm_bindings::kvm_device_attr {
+            flags,
+            group,
+            attr,
+            addr,
+        };
+        device
+            .set_device_attr(&attr)
+            .map_err(Error::SetDeviceAttribute)
+    }
+
+    /// Method to initialize the GIC device
+    #[allow(clippy::new_ret_no_self)]
+    pub fn new(
+        vm: &dyn Vm,
+        vcpu_count: u64,
+        dist_addr: u64,
+        dist_size: u64,
+        redist_size: u64,
+        msi_size: u64,
+        nr_irqs: u32,
+    ) -> Result<KvmGicV3Its> {
+        let vgic = Self::create_device(vm)?;
+        let redists_size: u64 = redist_size * vcpu_count;
+        let redists_addr: u64 = dist_addr - redists_size;
+        let msi_addr: u64 = redists_addr - msi_size;
+
+        let mut gic_device = KvmGicV3Its {
+            device: vgic,
+            its_device: None,
+            gicr_typers: vec![0; vcpu_count.try_into().unwrap()],
+            dist_addr,
+            dist_size,
+            redists_addr,
+            redists_size,
+            msi_addr,
+            msi_size,
+            vcpu_count,
+        };
+
+        gic_device.init_device_attributes(vm, nr_irqs)?;
+
+        Ok(gic_device)
+    }
+}
+
+impl Vgic for KvmGicV3Its {
+    fn fdt_compatibility(&self) -> &str {
+        "arm,gic-v3"
+    }
+
+    fn msi_compatible(&self) -> bool {
+        true
+    }
+
+    fn msi_compatibility(&self) -> &str {
+        "arm,gic-v3-its"
+    }
+
+    fn fdt_maint_irq(&self) -> u32 {
+        KvmGicV3Its::ARCH_GIC_V3_MAINT_IRQ
+    }
+
+    fn vcpu_count(&self) -> u64 {
+        self.vcpu_count
+    }
+
+    fn device_properties(&self) -> [u64; 4] {
+        [
+            self.dist_addr,
+            self.dist_size,
+            self.redists_addr,
+            self.redists_size,
+        ]
+    }
+
+    fn msi_properties(&self) -> [u64; 2] {
+        [self.msi_addr, self.msi_size]
+    }
+
+    fn set_its_device(&mut self, its_device: Option<Arc<dyn Device>>) {
+        self.its_device = its_device;
+    }
+
+    fn set_gicr_typers(&mut self, vcpu_states: &[CpuState]) {
+        let gicr_typers = construct_gicr_typers(vcpu_states);
+        self.gicr_typers = gicr_typers;
+    }
+
+    fn as_any_concrete_mut(&mut self) -> &mut dyn Any {
+        self
+    }
+
+    /// Save the state of GICv3ITS.
+    fn state(&self) -> Result<Gicv3ItsState> {
+        let gicr_typers = self.gicr_typers.clone();
+
+        let gicd_ctlr = read_ctlr(self.device())?;
+
+        let dist_state = get_dist_regs(self.device())?;
+
+        let rdist_state = get_redist_regs(self.device(), &gicr_typers)?;
+
+        let icc_state = get_icc_regs(self.device(), &gicr_typers)?;
+
+        let its_baser_state: [u64; 8] = [0; 8];
+        for i in 0..8 {
+            gicv3_its_attr_access(
+                self.its_device().unwrap(),
+                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+                GITS_BASER + i * 8,
+                &its_baser_state[i as usize],
+                false,
+            )?;
+        }
+
+        let its_ctlr_state: u64 = 0;
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CTLR,
+            &its_ctlr_state,
+            false,
+        )?;
+
+        let its_cbaser_state: u64 = 0;
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CBASER,
+            &its_cbaser_state,
+            false,
+        )?;
+
+        let its_creadr_state: u64 = 0;
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CREADR,
+            &its_creadr_state,
+            false,
+        )?;
+
+        let its_cwriter_state: u64 = 0;
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CWRITER,
+            &its_cwriter_state,
+            false,
+        )?;
+
+        let its_iidr_state: u64 = 0;
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_IIDR,
+            &its_iidr_state,
+            false,
+        )?;
+
+        Ok(Gicv3ItsState {
+            dist: dist_state,
+            rdist: rdist_state,
+            icc: icc_state,
+            gicd_ctlr,
+            its_ctlr: its_ctlr_state,
+            its_iidr: its_iidr_state,
+            its_cbaser: its_cbaser_state,
+            its_cwriter: its_cwriter_state,
+            its_creadr: its_creadr_state,
+            its_baser: its_baser_state,
+        })
+    }
+
+    /// Restore the state of GICv3ITS.
+    fn set_state(&mut self, state: &Gicv3ItsState) -> Result<()> {
+        let gicr_typers = self.gicr_typers.clone();
+
+        write_ctlr(self.device(), state.gicd_ctlr)?;
+
+        set_dist_regs(self.device(), &state.dist)?;
+
+        set_redist_regs(self.device(), &gicr_typers, &state.rdist)?;
+
+        set_icc_regs(self.device(), &gicr_typers, &state.icc)?;
+
+        //Restore GICv3ITS registers
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_IIDR,
+            &state.its_iidr,
+            true,
+        )?;
+
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CBASER,
+            &state.its_cbaser,
+            true,
+        )?;
+
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CREADR,
+            &state.its_creadr,
+            true,
+        )?;
+
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CWRITER,
+            &state.its_cwriter,
+            true,
+        )?;
+
+        for i in 0..8 {
+            gicv3_its_attr_access(
+                self.its_device().unwrap(),
+                kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+                GITS_BASER + i * 8,
+                &state.its_baser[i as usize],
+                true,
+            )?;
+        }
+
+        // Restore ITS tables
+        gicv3_its_tables_access(self.its_device().unwrap(), false)?;
+
+        gicv3_its_attr_access(
+            self.its_device().unwrap(),
+            kvm_bindings::KVM_DEV_ARM_VGIC_GRP_ITS_REGS,
+            GITS_CTLR,
+            &state.its_ctlr,
+            true,
+        )
+    }
+
+    /// Saves GIC internal data tables into RAM, including:
+    /// - RDIST pending tables
+    /// - ITS tables into guest RAM.
+    fn save_data_tables(&self) -> Result<()> {
+        // Flash RDIST pending tables
+        let init_gic_attr = kvm_bindings::kvm_device_attr {
+            group: kvm_bindings::KVM_DEV_ARM_VGIC_GRP_CTRL,
+            attr: u64::from(kvm_bindings::KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES),
+            addr: 0,
+            flags: 0,
+        };
+        self.device()
+            .set_device_attr(&init_gic_attr)
+            .map_err(Error::SetDeviceAttribute)?;
+        // Flush ITS tables to guest RAM.
+        gicv3_its_tables_access(self.its_device().unwrap(), true)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::aarch64::gic::{
+        get_dist_regs, get_icc_regs, get_redist_regs, set_dist_regs, set_icc_regs, set_redist_regs,
+    };
+    use crate::kvm::KvmGicV3Its;
+
+    #[test]
+    fn test_create_gic() {
+        let hv = crate::new().unwrap();
+        let vm = hv.create_vm().unwrap();
+
+        assert!(KvmGicV3Its::new(
+            &*vm,
+            1,
+            0x0900_0000 - 0x01_0000,
+            0x01_0000,
+            0x02_0000,
+            0x02_0000,
+            256
+        )
+        .is_ok());
+    }
+
+    #[test]
+    fn test_get_set_dist_regs() {
+        let hv = crate::new().unwrap();
+        let vm = hv.create_vm().unwrap();
+        let _ = vm.create_vcpu(0, None).unwrap();
+        let gic = KvmGicV3Its::new(
+            &*vm,
+            1,
+            0x0900_0000 - 0x01_0000,
+            0x01_0000,
+            0x02_0000,
+            0x02_0000,
+            256,
+        )
+        .expect("Cannot create gic");
+
+        let res = get_dist_regs(gic.device());
+        assert!(res.is_ok());
+        let state = res.unwrap();
+        assert_eq!(state.len(), 568);
+
+        let res = set_dist_regs(gic.device(), &state);
+        assert!(res.is_ok());
+    }
+
+    #[test]
+    fn test_get_set_redist_regs() {
+        let hv = crate::new().unwrap();
+        let vm = hv.create_vm().unwrap();
+        let _ = vm.create_vcpu(0, None).unwrap();
+        let gic = KvmGicV3Its::new(
+            &*vm,
+            1,
+            0x0900_0000 - 0x01_0000,
+            0x01_0000,
+            0x02_0000,
+            0x02_0000,
+            256,
+        )
+        .expect("Cannot create gic");
+
+        let gicr_typer = vec![123];
+        let res = get_redist_regs(gic.device(), &gicr_typer);
+        assert!(res.is_ok());
+        let state = res.unwrap();
+        println!("{}", state.len());
+        assert!(state.len() == 24);
+
+        assert!(set_redist_regs(gic.device(), &gicr_typer, &state).is_ok());
+    }
+
+    #[test]
+    fn test_get_set_icc_regs() {
+        let hv = crate::new().unwrap();
+        let vm = hv.create_vm().unwrap();
+        let _ = vm.create_vcpu(0, None).unwrap();
+        let gic = KvmGicV3Its::new(
+            &*vm,
+            1,
+            0x0900_0000 - 0x01_0000,
+            0x01_0000,
+            0x02_0000,
+            0x02_0000,
+            256,
+        )
+        .expect("Cannot create gic");
+
+        let gicr_typer = vec![123];
+        let res = get_icc_regs(gic.device(), &gicr_typer);
+        assert!(res.is_ok());
+        let state = res.unwrap();
+        println!("{}", state.len());
+        assert!(state.len() == 9);
+
+        assert!(set_icc_regs(gic.device(), &gicr_typer, &state).is_ok());
+    }
+
+    #[test]
+    fn test_save_data_tables() {
+        let hv = crate::new().unwrap();
+        let vm = hv.create_vm().unwrap();
+        let _ = vm.create_vcpu(0, None).unwrap();
+        let gic = vm
+            .create_vgic(
+                1,
+                0x0900_0000 - 0x01_0000,
+                0x01_0000,
+                0x02_0000,
+                0x02_0000,
+                256,
+            )
+            .expect("Cannot create gic");
+
+        assert!(gic.lock().unwrap().save_data_tables().is_ok());
+    }
+}
--- a/hypervisor/src/kvm/aarch64/gic/redist_regs.rs
+++ b/hypervisor/src/kvm/aarch64/gic/redist_regs.rs
@@ -1,9 +1,10 @@
+// Copyright 2022 Arm Limited (or its affiliates). All rights reserved.
 // Copyright 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 // SPDX-License-Identifier: Apache-2.0

-use super::{Error, Result};
-use hypervisor::kvm::kvm_bindings::{kvm_device_attr, KVM_DEV_ARM_VGIC_GRP_REDIST_REGS};
-use hypervisor::CpuState;
+use crate::arch::aarch64::gic::{Error, Result};
+use crate::kvm::kvm_bindings::{kvm_device_attr, KVM_DEV_ARM_VGIC_GRP_REDIST_REGS};
+use crate::{CpuState, Device};
 use std::sync::Arc;

 // Relevant redistributor registers that we want to save/restore.
@@ -83,7 +84,7 @@ static VGIC_SGI_REGS: &[RdistReg] = &[
 ];

 fn redist_attr_access(
-    gic: &Arc<dyn hypervisor::Device>,
+    gic: &Arc<dyn Device>,
    offset: u32,
    typer: u64,
    val: &u32,
@@ -106,7 +107,7 @@ fn redist_attr_access(
 }

 fn access_redists_aux(
-    gic: &Arc<dyn hypervisor::Device>,
+    gic: &Arc<dyn Device>,
    gicr_typer: &[u64],
    state: &mut Vec<u32>,
    reg_list: &[RdistReg],
@@ -136,7 +137,7 @@ fn access_redists_aux(
 }

 /// Get redistributor registers.
-pub fn get_redist_regs(gic: &Arc<dyn hypervisor::Device>, gicr_typer: &[u64]) -> Result<Vec<u32>> {
+pub fn get_redist_regs(gic: &Arc<dyn Device>, gicr_typer: &[u64]) -> Result<Vec<u32>> {
    let mut state = Vec::new();
    let mut idx: usize = 0;
    access_redists_aux(
@@ -153,11 +154,7 @@ pub fn get_redist_regs(gic: &Arc<dyn hypervisor::Device>, gicr_typer: &[u64]) ->
 }

 /// Set redistributor registers.
-pub fn set_redist_regs(
-    gic: &Arc<dyn hypervisor::Device>,
-    gicr_typer: &[u64],
-    state: &[u32],
-) -> Result<()> {
+pub fn set_redist_regs(gic: &Arc<dyn Device>, gicr_typer: &[u64], state: &[u32]) -> Result<()> {
    let mut idx: usize = 0;
    let mut mut_state = state.to_owned();
    access_redists_aux(
--- a/hypervisor/src/kvm/aarch64/mod.rs
+++ b/hypervisor/src/kvm/aarch64/mod.rs
@@ -8,9 +8,8 @@
 //
 //

-///
-/// Export generically-named wrappers of kvm-bindings for Unix-based platforms
-///
+pub mod gic;
+
 use crate::kvm::{KvmError, KvmResult};
 use kvm_bindings::{
    kvm_mp_state, kvm_one_reg, kvm_regs, KVM_REG_ARM64, KVM_REG_ARM64_SYSREG,
@@ -23,7 +22,7 @@ use kvm_bindings::{
 pub use kvm_bindings::{
    kvm_one_reg as Register, kvm_regs as StandardRegisters, kvm_vcpu_init as VcpuInit, RegList,
 };
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 pub use {kvm_ioctls::Cap, kvm_ioctls::Kvm};

 // This macro gets the offset of a structure (i.e `str`) member (i.e `field`) without having
--- a/hypervisor/src/kvm/mod.rs
+++ b/hypervisor/src/kvm/mod.rs
@@ -8,20 +8,24 @@
 //
 //

+#[cfg(target_arch = "aarch64")]
+use crate::aarch64::gic::KvmGicV3Its;
 #[cfg(target_arch = "aarch64")]
 pub use crate::aarch64::{
-    check_required_kvm_extensions, is_system_register, VcpuInit, VcpuKvmState as CpuState,
-    MPIDR_EL1,
+    check_required_kvm_extensions, gic::Gicv3ItsState as GicState, is_system_register, VcpuInit,
+    VcpuKvmState as CpuState, MPIDR_EL1,
 };
+#[cfg(target_arch = "aarch64")]
+use crate::arch::aarch64::gic::Vgic;
 use crate::cpu;
 use crate::device;
 use crate::hypervisor;
 use crate::vec_with_array_field;
-use crate::vm::{self, VmmOps};
+use crate::vm::{self, InterruptSourceConfig, VmOps};
 #[cfg(target_arch = "aarch64")]
 use crate::{arm64_core_reg_id, offset__of};
 use kvm_ioctls::{NoDatamatch, VcpuFd, VmFd};
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 #[cfg(target_arch = "aarch64")]
 use std::convert::TryInto;
@@ -31,6 +35,8 @@ use std::os::unix::io::{AsRawFd, RawFd};
 use std::result;
 #[cfg(target_arch = "x86_64")]
 use std::sync::atomic::{AtomicBool, Ordering};
+#[cfg(target_arch = "aarch64")]
+use std::sync::Mutex;
 use std::sync::{Arc, RwLock};
 use vmm_sys_util::eventfd::EventFd;
 // x86_64 dependencies
@@ -154,7 +160,7 @@ pub struct TdxCapabilities {
    pub cpuid_configs: [TdxCpuidConfig; TDX_MAX_NR_CPUID_CONFIGS],
 }

-#[derive(Clone, Copy, Debug, PartialEq, Deserialize, Serialize)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, Deserialize, Serialize)]
 pub struct KvmVmState {}

 pub use KvmVmState as VmState;
@@ -234,7 +240,7 @@ impl vm::Vm for KvmVm {
    fn create_vcpu(
        &self,
        id: u8,
-        vmmops: Option<Arc<dyn VmmOps>>,
+        vm_ops: Option<Arc<dyn VmOps>>,
    ) -> vm::Result<Arc<dyn cpu::Vcpu>> {
        let vc = self
            .fd
@@ -244,12 +250,37 @@ impl vm::Vm for KvmVm {
            fd: vc,
            #[cfg(target_arch = "x86_64")]
            msrs: self.msrs.clone(),
-            vmmops,
+            vm_ops,
            #[cfg(target_arch = "x86_64")]
            hyperv_synic: AtomicBool::new(false),
        };
        Ok(Arc::new(vcpu))
    }
+    #[cfg(target_arch = "aarch64")]
+    ///
+    /// Creates a virtual GIC device.
+    ///
+    fn create_vgic(
+        &self,
+        vcpu_count: u64,
+        dist_addr: u64,
+        dist_size: u64,
+        redist_size: u64,
+        msi_size: u64,
+        nr_irqs: u32,
+    ) -> vm::Result<Arc<Mutex<dyn Vgic>>> {
+        let gic_device = KvmGicV3Its::new(
+            self,
+            vcpu_count,
+            dist_addr,
+            dist_size,
+            redist_size,
+            msi_size,
+            nr_irqs,
+        )
+        .map_err(|e| vm::HypervisorVmError::CreateVgic(anyhow!("Vgic error {:?}", e)))?;
+        Ok(Arc::new(Mutex::new(gic_device)))
+    }
    ///
    /// Registers an event to be signaled whenever a certain address is written to.
    ///
@@ -284,6 +315,64 @@ impl vm::Vm for KvmVm {
            .unregister_ioevent(fd, addr, NoDatamatch)
            .map_err(|e| vm::HypervisorVmError::UnregisterIoEvent(e.into()))
    }
+
+    ///
+    /// Constructs a routing entry
+    ///
+    fn make_routing_entry(
+        &self,
+        gsi: u32,
+        config: &InterruptSourceConfig,
+    ) -> kvm_irq_routing_entry {
+        match &config {
+            InterruptSourceConfig::MsiIrq(cfg) => {
+                let mut kvm_route = kvm_irq_routing_entry {
+                    gsi,
+                    type_: KVM_IRQ_ROUTING_MSI,
+                    ..Default::default()
+                };
+
+                kvm_route.u.msi.address_lo = cfg.low_addr;
+                kvm_route.u.msi.address_hi = cfg.high_addr;
+                kvm_route.u.msi.data = cfg.data;
+
+                if self.check_extension(crate::kvm::Cap::MsiDevid) {
+                    // On AArch64, there is limitation on the range of the 'devid',
+                    // it can not be greater than 65536 (the max of u16).
+                    //
+                    // BDF can not be used directly, because 'segment' is in high
+                    // 16 bits. The layout of the u32 BDF is:
+                    // |---- 16 bits ----|-- 8 bits --|-- 5 bits --|-- 3 bits --|
+                    // |      segment    |     bus    |   device   |  function  |
+                    //
+                    // Now that we support 1 bus only in a segment, we can build a
+                    // 'devid' by replacing the 'bus' bits with the low 8 bits of
+                    // 'segment' data.
+                    // This way we can resolve the range checking problem and give
+                    // different `devid` to all the devices. Limitation is that at
+                    // most 256 segments can be supported.
+                    //
+                    let modified_devid = (cfg.devid & 0x00ff_0000) >> 8 | cfg.devid & 0xff;
+
+                    kvm_route.flags = KVM_MSI_VALID_DEVID;
+                    kvm_route.u.msi.__bindgen_anon_1.devid = modified_devid;
+                }
+                kvm_route
+            }
+            InterruptSourceConfig::LegacyIrq(cfg) => {
+                let mut kvm_route = kvm_irq_routing_entry {
+                    gsi,
+                    type_: KVM_IRQ_ROUTING_IRQCHIP,
+                    ..Default::default()
+                };
+                kvm_route.u.irqchip.irqchip = cfg.irqchip;
+                kvm_route.u.irqchip.pin = cfg.pin;
+
+                kvm_route
+            }
+        }
+    }
+
    ///
    /// Sets the GSI routing table entries, overwriting any previously set
    /// entries, as per the `KVM_SET_GSI_ROUTING` ioctl.
@@ -816,7 +905,7 @@ pub struct KvmVcpu {
    fd: VcpuFd,
    #[cfg(target_arch = "x86_64")]
    msrs: MsrEntries,
-    vmmops: Option<Arc<dyn vm::VmmOps>>,
+    vm_ops: Option<Arc<dyn vm::VmOps>>,
    #[cfg(target_arch = "x86_64")]
    hyperv_synic: AtomicBool,
 }
@@ -1056,8 +1145,8 @@ impl cpu::Vcpu for KvmVcpu {
            Ok(run) => match run {
                #[cfg(target_arch = "x86_64")]
                VcpuExit::IoIn(addr, data) => {
-                    if let Some(vmmops) = &self.vmmops {
-                        return vmmops
+                    if let Some(vm_ops) = &self.vm_ops {
+                        return vm_ops
                            .pio_read(addr.into(), data)
                            .map(|_| cpu::VmExit::Ignore)
                            .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()));
@@ -1067,8 +1156,8 @@ impl cpu::Vcpu for KvmVcpu {
                }
                #[cfg(target_arch = "x86_64")]
                VcpuExit::IoOut(addr, data) => {
-                    if let Some(vmmops) = &self.vmmops {
-                        return vmmops
+                    if let Some(vm_ops) = &self.vm_ops {
+                        return vm_ops
                            .pio_write(addr.into(), data)
                            .map(|_| cpu::VmExit::Ignore)
                            .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()));
@@ -1100,8 +1189,8 @@ impl cpu::Vcpu for KvmVcpu {
                }

                VcpuExit::MmioRead(addr, data) => {
-                    if let Some(vmmops) = &self.vmmops {
-                        return vmmops
+                    if let Some(vm_ops) = &self.vm_ops {
+                        return vm_ops
                            .mmio_read(addr, data)
                            .map(|_| cpu::VmExit::Ignore)
                            .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()));
@@ -1110,8 +1199,8 @@ impl cpu::Vcpu for KvmVcpu {
                    Ok(cpu::VmExit::MmioRead(addr, data))
                }
                VcpuExit::MmioWrite(addr, data) => {
-                    if let Some(vmmops) = &self.vmmops {
-                        return vmmops
+                    if let Some(vm_ops) = &self.vm_ops {
+                        return vm_ops
                            .mmio_write(addr, data)
                            .map(|_| cpu::VmExit::Ignore)
                            .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()));
@@ -1477,6 +1566,51 @@ impl cpu::Vcpu for KvmVcpu {
            .get_one_reg(MPIDR_EL1)
            .map_err(|e| cpu::HypervisorCpuError::GetSysRegister(e.into()))
    }
+    ///
+    /// Configure core registers for a given CPU.
+    ///
+    #[cfg(any(target_arch = "arm", target_arch = "aarch64"))]
+    fn setup_regs(&self, cpu_id: u8, boot_ip: u64, fdt_start: u64) -> cpu::Result<()> {
+        #[allow(non_upper_case_globals)]
+        // PSR (Processor State Register) bits.
+        // Taken from arch/arm64/include/uapi/asm/ptrace.h.
+        const PSR_MODE_EL1h: u64 = 0x0000_0005;
+        const PSR_F_BIT: u64 = 0x0000_0040;
+        const PSR_I_BIT: u64 = 0x0000_0080;
+        const PSR_A_BIT: u64 = 0x0000_0100;
+        const PSR_D_BIT: u64 = 0x0000_0200;
+        // Taken from arch/arm64/kvm/inject_fault.c.
+        const PSTATE_FAULT_BITS_64: u64 =
+            PSR_MODE_EL1h | PSR_A_BIT | PSR_F_BIT | PSR_I_BIT | PSR_D_BIT;
+
+        let kreg_off = offset__of!(kvm_regs, regs);
+
+        // Get the register index of the PSTATE (Processor State) register.
+        let pstate = offset__of!(user_pt_regs, pstate) + kreg_off;
+        self.set_reg(
+            arm64_core_reg_id!(KVM_REG_SIZE_U64, pstate),
+            PSTATE_FAULT_BITS_64,
+        )
+        .map_err(|e| cpu::HypervisorCpuError::SetCoreRegister(e.into()))?;
+
+        // Other vCPUs are powered off initially awaiting PSCI wakeup.
+        if cpu_id == 0 {
+            // Setting the PC (Processor Counter) to the current program address (kernel address).
+            let pc = offset__of!(user_pt_regs, pc) + kreg_off;
+            self.set_reg(arm64_core_reg_id!(KVM_REG_SIZE_U64, pc), boot_ip as u64)
+                .map_err(|e| cpu::HypervisorCpuError::SetCoreRegister(e.into()))?;
+
+            // Last mandatory thing to set -> the address pointing to the FDT (also called DTB).
+            // "The device tree blob (dtb) must be placed on an 8-byte boundary and must
+            // not exceed 2 megabytes in size." -> https://www.kernel.org/doc/Documentation/arm64/booting.txt.
+            // We are choosing to place it the end of DRAM. See `get_fdt_addr`.
+            let regs0 = offset__of!(user_pt_regs, regs) + kreg_off;
+            self.set_reg(arm64_core_reg_id!(KVM_REG_SIZE_U64, regs0), fdt_start)
+                .map_err(|e| cpu::HypervisorCpuError::SetCoreRegister(e.into()))?;
+        }
+        Ok(())
+    }
+
    #[cfg(target_arch = "x86_64")]
    ///
    /// Get the current CPU state
--- a/hypervisor/src/kvm/x86_64/mod.rs
+++ b/hypervisor/src/kvm/x86_64/mod.rs
@@ -10,7 +10,7 @@

 use crate::arch::x86::{msr_index, SegmentRegisterOps, MTRR_ENABLE, MTRR_MEM_TYPE_WB};
 use crate::kvm::{Cap, Kvm, KvmError, KvmResult};
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};

 ///
 /// Export generically-named wrappers of kvm-bindings for Unix-based platforms
--- a/hypervisor/src/lib.rs
+++ b/hypervisor/src/lib.rs
@@ -18,6 +18,8 @@
 //! - arm64
 //!

+#![allow(clippy::significant_drop_in_scrutinee)]
+
 #[macro_use]
 extern crate anyhow;
 #[cfg(target_arch = "x86_64")]
@@ -37,10 +39,10 @@ pub mod kvm;
 pub mod mshv;

 /// Hypevisor related module
-pub mod hypervisor;
+mod hypervisor;

 /// Vm related module
-pub mod vm;
+mod vm;

 /// CPU related module
 mod cpu;
@@ -48,18 +50,32 @@ mod cpu;
 /// Device related module
 mod device;

-pub use crate::hypervisor::{Hypervisor, HypervisorError};
 pub use cpu::{HypervisorCpuError, Vcpu, VmExit};
 pub use device::{Device, HypervisorDeviceError};
-#[cfg(feature = "tdx")]
-pub use kvm::TdxCapabilities;
+pub use hypervisor::{Hypervisor, HypervisorError};
+#[cfg(all(feature = "kvm", target_arch = "x86_64"))]
+pub use kvm::x86_64;
+#[cfg(all(feature = "kvm", target_arch = "aarch64"))]
+pub use kvm::{aarch64, GicState};
+// Aliased types exposed from both hypervisors
 #[cfg(feature = "kvm")]
-pub use kvm::*;
+pub use kvm::{
+    ClockData, CpuState, CreateDevice, DeviceAttr, DeviceFd, IoEventAddress, IrqRoutingEntry,
+    MemoryRegion, MpState, VcpuEvents, VcpuExit, VmState,
+};
 #[cfg(all(feature = "mshv", target_arch = "x86_64"))]
-pub use mshv::*;
-pub use vm::{DataMatch, HypervisorVmError, Vm};
-
+pub use mshv::x86_64;
+// Aliased types exposed from both hypervisors
+#[cfg(all(feature = "mshv", target_arch = "x86_64"))]
+pub use mshv::{
+    CpuState, CreateDevice, DeviceAttr, DeviceFd, IoEventAddress, IrqRoutingEntry, MemoryRegion,
+    MpState, VcpuEvents, VcpuExit, VmState,
+};
 use std::sync::Arc;
+pub use vm::{
+    DataMatch, HypervisorVmError, InterruptSourceConfig, LegacyIrqSourceConfig, MsiIrqSourceConfig,
+    Vm, VmOps,
+};

 pub fn new() -> std::result::Result<Arc<dyn Hypervisor>, HypervisorError> {
    #[cfg(feature = "kvm")]
--- a/hypervisor/src/mshv/mod.rs
+++ b/hypervisor/src/mshv/mod.rs
@@ -11,11 +11,11 @@ use crate::cpu;
 use crate::cpu::Vcpu;
 use crate::hypervisor;
 use crate::vec_with_array_field;
-use crate::vm::{self, VmmOps};
+use crate::vm::{self, InterruptSourceConfig, VmOps};
 pub use mshv_bindings::*;
 pub use mshv_ioctls::IoEventAddress;
 use mshv_ioctls::{set_registers_64, Mshv, NoDatamatch, VcpuFd, VmFd};
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 use std::collections::HashMap;
 use std::sync::{Arc, RwLock};
 use vm::DataMatch;
@@ -108,6 +108,17 @@ impl hypervisor::Hypervisor for MshvHypervisor {
            break;
        }

+        // Default Microsoft Hypervisor behavior for unimplemented MSR is to
+        // send a fault to the guest if it tries to access it. It is possible
+        // to override this behavior with a more suitable option i.e., ignore
+        // writes from the guest and return zero in attempt to read unimplemented
+        // MSR.
+        fd.set_partition_property(
+            hv_partition_property_code_HV_PARTITION_PROPERTY_UNIMPLEMENTED_MSR_ACTION,
+            hv_unimplemented_msr_action_HV_UNIMPLEMENTED_MSR_ACTION_IGNORE_WRITE_READ_ZERO as u64,
+        )
+        .map_err(|e| hypervisor::HypervisorError::SetPartitionProperty(e.into()))?;
+
        let msr_list = self.get_msr_list()?;
        let num_msrs = msr_list.as_fam_struct_ref().nmsrs as usize;
        let mut msrs = MsrEntries::new(num_msrs).unwrap();
@@ -122,7 +133,7 @@ impl hypervisor::Hypervisor for MshvHypervisor {
            fd: vm_fd,
            msrs,
            hv_state: hv_state_init(),
-            vmmops: None,
+            vm_ops: None,
            dirty_log_slots: Arc::new(RwLock::new(HashMap::new())),
        }))
    }
@@ -151,7 +162,7 @@ pub struct MshvVcpu {
    cpuid: CpuId,
    msrs: MsrEntries,
    hv_state: Arc<RwLock<HvState>>, // Mshv State
-    vmmops: Option<Arc<dyn vm::VmmOps>>,
+    vm_ops: Option<Arc<dyn vm::VmOps>>,
 }

 /// Implementation of Vcpu trait for Microsoft Hypervisor
@@ -355,14 +366,14 @@ impl cpu::Vcpu for MshvVcpu {

                    if is_write {
                        let data = (info.rax as u32).to_le_bytes();
-                        if let Some(vmmops) = &self.vmmops {
-                            vmmops
+                        if let Some(vm_ops) = &self.vm_ops {
+                            vm_ops
                                .pio_write(port.into(), &data[0..len])
                                .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()))?;
                        }
                    } else {
-                        if let Some(vmmops) = &self.vmmops {
-                            vmmops
+                        if let Some(vm_ops) = &self.vm_ops {
+                            vm_ops
                                .pio_read(port.into(), &mut data[0..len])
                                .map_err(|e| cpu::HypervisorCpuError::RunVcpu(e.into()))?;
                        }
@@ -655,9 +666,9 @@ impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
            gpa
        );

-        if let Some(vmmops) = &self.vcpu.vmmops {
-            if vmmops.guest_mem_read(gpa, data).is_err() {
-                vmmops
+        if let Some(vm_ops) = &self.vcpu.vm_ops {
+            if vm_ops.guest_mem_read(gpa, data).is_err() {
+                vm_ops
                    .mmio_read(gpa, data)
                    .map_err(|e| PlatformError::MemoryReadFailure(e.into()))?;
            }
@@ -675,9 +686,9 @@ impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
            gpa
        );

-        if let Some(vmmops) = &self.vcpu.vmmops {
-            if vmmops.guest_mem_write(gpa, data).is_err() {
-                vmmops
+        if let Some(vm_ops) = &self.vcpu.vm_ops {
+            if vm_ops.guest_mem_write(gpa, data).is_err() {
+                vm_ops
                    .mmio_write(gpa, data)
                    .map_err(|e| PlatformError::MemoryWriteFailure(e.into()))?;
            }
@@ -746,7 +757,7 @@ pub struct MshvVm {
    msrs: MsrEntries,
    // Hypervisor State
    hv_state: Arc<RwLock<HvState>>,
-    vmmops: Option<Arc<dyn vm::VmmOps>>,
+    vm_ops: Option<Arc<dyn vm::VmOps>>,
    dirty_log_slots: Arc<RwLock<HashMap<u64, MshvDirtyLogSlot>>>,
 }

@@ -816,7 +827,7 @@ impl vm::Vm for MshvVm {
    fn create_vcpu(
        &self,
        id: u8,
-        vmmops: Option<Arc<dyn VmmOps>>,
+        vm_ops: Option<Arc<dyn VmOps>>,
    ) -> vm::Result<Arc<dyn cpu::Vcpu>> {
        let vcpu_fd = self
            .fd
@@ -828,7 +839,7 @@ impl vm::Vm for MshvVm {
            cpuid: CpuId::new(1).unwrap(),
            msrs: self.msrs.clone(),
            hv_state: self.hv_state.clone(),
-            vmmops,
+            vm_ops,
        };
        Ok(Arc::new(vcpu))
    }
@@ -957,6 +968,27 @@ impl vm::Vm for MshvVm {
            .map_err(|e| vm::HypervisorVmError::CreatePassthroughDevice(e.into()))
    }

+    ///
+    /// Constructs a routing entry
+    ///
+    fn make_routing_entry(
+        &self,
+        gsi: u32,
+        config: &InterruptSourceConfig,
+    ) -> mshv_msi_routing_entry {
+        match config {
+            InterruptSourceConfig::MsiIrq(cfg) => mshv_msi_routing_entry {
+                gsi,
+                address_lo: cfg.low_addr,
+                address_hi: cfg.high_addr,
+                data: cfg.data,
+            },
+            _ => {
+                unreachable!()
+            }
+        }
+    }
+
    fn set_gsi_routing(&self, entries: &[IrqRoutingEntry]) -> vm::Result<()> {
        let mut msi_routing =
            vec_with_array_field::<mshv_msi_routing, mshv_msi_routing_entry>(entries.len());
@@ -1027,6 +1059,3 @@ impl vm::Vm for MshvVm {
            .map_err(|e| vm::HypervisorVmError::GetDirtyLog(e.into()))
    }
 }
-pub use hv_cpuid_entry as CpuIdEntry;
-
-pub const CPUID_FLAG_VALID_INDEX: u32 = 0;
--- a/hypervisor/src/mshv/x86_64/mod.rs
+++ b/hypervisor/src/mshv/x86_64/mod.rs
@@ -8,13 +8,14 @@
 //
 //
 use crate::arch::x86::{msr_index, SegmentRegisterOps, MTRR_ENABLE, MTRR_MEM_TYPE_WB};
-use serde_derive::{Deserialize, Serialize};
+use serde::{Deserialize, Serialize};
 use std::fmt;

 ///
 /// Export generically-named wrappers of mshv_bindings for Unix-based platforms
 ///
 pub use {
+    mshv_bindings::hv_cpuid_entry as CpuIdEntry,
    mshv_bindings::mshv_user_mem_region as MemoryRegion, mshv_bindings::msr_entry as MsrEntry,
    mshv_bindings::CpuId, mshv_bindings::DebugRegisters,
    mshv_bindings::FloatingPointUnit as FpuState, mshv_bindings::LapicState,
@@ -25,6 +26,8 @@ pub use {
    mshv_bindings::Xcrs as ExtendedControlRegisters,
 };

+pub const CPUID_FLAG_VALID_INDEX: u32 = 0;
+
 #[derive(Clone, Serialize, Deserialize)]
 pub struct VcpuMshvState {
    pub msrs: MsrEntries,
--- a/hypervisor/src/vm.rs
+++ b/hypervisor/src/vm.rs
@@ -10,23 +10,27 @@

 #[cfg(target_arch = "aarch64")]
 use crate::aarch64::VcpuInit;
+#[cfg(target_arch = "aarch64")]
+use crate::arch::aarch64::gic::Vgic;
 use crate::cpu::Vcpu;
 use crate::device::Device;
+#[cfg(feature = "kvm")]
+use crate::kvm::KvmVmState as VmState;
+#[cfg(feature = "mshv")]
+use crate::mshv::HvState as VmState;
 #[cfg(feature = "tdx")]
 use crate::x86_64::CpuId;
 #[cfg(all(feature = "kvm", target_arch = "x86_64"))]
 use crate::ClockData;
 use crate::CreateDevice;
-#[cfg(feature = "mshv")]
-use crate::HvState as VmState;
-#[cfg(feature = "kvm")]
-use crate::KvmVmState as VmState;
 use crate::{IoEventAddress, IrqRoutingEntry, MemoryRegion};
 #[cfg(feature = "kvm")]
 use kvm_ioctls::Cap;
 #[cfg(target_arch = "x86_64")]
 use std::fs::File;
 use std::sync::Arc;
+#[cfg(target_arch = "aarch64")]
+use std::sync::Mutex;
 use thiserror::Error;
 use vmm_sys_util::eventfd::EventFd;

@@ -210,12 +214,50 @@ pub enum HypervisorVmError {
    ///
    #[error("Failed to initialize memory region TDX: {0}")]
    InitMemRegionTdx(#[source] std::io::Error),
+    ///
+    /// Create Vgic error
+    ///
+    #[error("Failed to create Vgic: {0}")]
+    CreateVgic(#[source] anyhow::Error),
 }
 ///
 /// Result type for returning from a function
 ///
 pub type Result<T> = std::result::Result<T, HypervisorVmError>;

+/// Configuration data for legacy interrupts.
+///
+/// On x86 platforms, legacy interrupts means those interrupts routed through PICs or IOAPICs.
+#[derive(Copy, Clone, Debug)]
+pub struct LegacyIrqSourceConfig {
+    pub irqchip: u32,
+    pub pin: u32,
+}
+
+/// Configuration data for MSI/MSI-X interrupts.
+///
+/// On x86 platforms, these interrupts are vectors delivered directly to the LAPIC.
+#[derive(Copy, Clone, Debug, Default)]
+pub struct MsiIrqSourceConfig {
+    /// High address to delivery message signaled interrupt.
+    pub high_addr: u32,
+    /// Low address to delivery message signaled interrupt.
+    pub low_addr: u32,
+    /// Data to write to delivery message signaled interrupt.
+    pub data: u32,
+    /// Unique ID of the device to delivery message signaled interrupt.
+    pub devid: u32,
+}
+
+/// Configuration data for an interrupt source.
+#[derive(Copy, Clone, Debug)]
+pub enum InterruptSourceConfig {
+    /// Configuration data for Legacy interrupts.
+    LegacyIrq(LegacyIrqSourceConfig),
+    /// Configuration data for PciMsi, PciMsix and generic MSI interrupts.
+    MsiIrq(MsiIrqSourceConfig),
+}
+
 ///
 /// Trait to represent a Vm
 ///
@@ -235,7 +277,18 @@ pub trait Vm: Send + Sync {
    /// Unregister an event that will, when signaled, trigger the `gsi` IRQ.
    fn unregister_irqfd(&self, fd: &EventFd, gsi: u32) -> Result<()>;
    /// Creates a new KVM vCPU file descriptor and maps the memory corresponding
-    fn create_vcpu(&self, id: u8, vmmops: Option<Arc<dyn VmmOps>>) -> Result<Arc<dyn Vcpu>>;
+    fn create_vcpu(&self, id: u8, vm_ops: Option<Arc<dyn VmOps>>) -> Result<Arc<dyn Vcpu>>;
+    #[cfg(target_arch = "aarch64")]
+    fn create_vgic(
+        &self,
+        vcpu_count: u64,
+        dist_addr: u64,
+        dist_size: u64,
+        redist_size: u64,
+        msi_size: u64,
+        nr_irqs: u32,
+    ) -> Result<Arc<Mutex<dyn Vgic>>>;
+
    /// Registers an event to be signaled whenever a certain address is written to.
    fn register_ioevent(
        &self,
@@ -245,6 +298,8 @@ pub trait Vm: Send + Sync {
    ) -> Result<()>;
    /// Unregister an event from a certain address it has been previously registered to.
    fn unregister_ioevent(&self, fd: &EventFd, addr: &IoEventAddress) -> Result<()>;
+    // Construct a routing entry
+    fn make_routing_entry(&self, gsi: u32, config: &InterruptSourceConfig) -> IrqRoutingEntry;
    /// Sets the GSI routing table entries, overwriting any previously set
    fn set_gsi_routing(&self, entries: &[IrqRoutingEntry]) -> Result<()>;
    /// Creates a memory region structure that can be used with {create/remove}_user_memory_region
@@ -309,7 +364,7 @@ pub trait Vm: Send + Sync {
    ) -> Result<()>;
 }

-pub trait VmmOps: Send + Sync {
+pub trait VmOps: Send + Sync {
    fn guest_mem_write(&self, gpa: u64, buf: &[u8]) -> Result<usize>;
    fn guest_mem_read(&self, gpa: u64, buf: &mut [u8]) -> Result<usize>;
    fn mmio_read(&self, gpa: u64, data: &mut [u8]) -> Result<()>;
--- a/net_util/Cargo.toml
+++ b/net_util/Cargo.toml
@@ -7,20 +7,21 @@ edition = "2021"
 [dependencies]
 epoll = "4.3.1"
 getrandom = "0.2"
-libc = "0.2.123"
-log = "0.4.16"
+libc = "0.2.126"
+log = "0.4.17"
 net_gen = { path = "../net_gen" }
 rate_limiter = { path = "../rate_limiter" }
-serde = "1.0.136"
+serde = "1.0.138"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"
 virtio-bindings = "0.1.0"
-virtio-queue = "0.2.0"
-vm-memory = { version = "0.7.0", features = ["backend-mmap", "backend-atomic", "backend-bitmap"] }
+virtio-queue = "0.4.0"
+vm-memory = { version = "0.8.0", features = ["backend-mmap", "backend-atomic", "backend-bitmap"] }
 vm-virtio = { path = "../vm-virtio" }
 vmm-sys-util = "0.9.0"

 [dev-dependencies]
-lazy_static = "1.4.0"
-pnet = "0.29.0"
-serde_json = "1.0.79"
+once_cell = "1.13.0"
+pnet = "0.31.0"
+pnet_datalink = "0.31.0"
+serde_json = "1.0.82"
--- a/net_util/src/lib.rs
+++ b/net_util/src/lib.rs
@@ -5,11 +5,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the THIRD-PARTY file.

-// This is only used by the tests module from tap.rs, but we cannot use #[macro_use] unless the
-// reference to lazy_static is declared at the root level of the importing crate.
-#[cfg(test)]
-#[macro_use]
-extern crate lazy_static;
 #[macro_use]
 extern crate log;

--- a/net_util/src/mac.rs
+++ b/net_util/src/mac.rs
@@ -15,7 +15,7 @@ use serde::ser::{Serialize, Serializer};

 pub const MAC_ADDR_LEN: usize = 6;

-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 pub struct MacAddr {
    bytes: [u8; MAC_ADDR_LEN],
 }
--- a/net_util/src/tap.rs
+++ b/net_util/src/tap.rs
@@ -321,15 +321,13 @@ impl Tap {

        // If TAP device is already up don't try and enable it
        let ifru_flags = unsafe { ifreq.ifr_ifru.ifru_flags };
-        if ifru_flags
-            & (net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16
-            == (net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16
+        if ifru_flags & net_gen::net_device_flags_IFF_UP as i16
+            == net_gen::net_device_flags_IFF_UP as i16
        {
            return Ok(());
        }

-        ifreq.ifr_ifru.ifru_flags =
-            (net_gen::net_device_flags_IFF_UP | net_gen::net_device_flags_IFF_RUNNING) as i16;
+        ifreq.ifr_ifru.ifru_flags = net_gen::net_device_flags_IFF_UP as i16;

        // ioctl is safe. Called with a valid sock fd, and we check the return.
        let ret =
@@ -395,38 +393,35 @@ impl AsRawFd for Tap {

 #[cfg(test)]
 mod tests {
-    extern crate pnet;
-
    use std::net::Ipv4Addr;
    use std::str;
    use std::sync::{mpsc, Mutex};
    use std::thread;
    use std::time::Duration;

-    use self::pnet::datalink::Channel::Ethernet;
-    use self::pnet::datalink::{self, DataLinkReceiver, DataLinkSender, NetworkInterface};
-    use self::pnet::packet::ethernet::{EtherTypes, EthernetPacket, MutableEthernetPacket};
-    use self::pnet::packet::ip::IpNextHeaderProtocols;
-    use self::pnet::packet::ipv4::{Ipv4Packet, MutableIpv4Packet};
-    use self::pnet::packet::udp::{MutableUdpPacket, UdpPacket};
-    use self::pnet::packet::{MutablePacket, Packet};
-    use self::pnet::util::MacAddr;
+    use once_cell::sync::Lazy;
+
+    use pnet::packet::ethernet::{EtherTypes, EthernetPacket, MutableEthernetPacket};
+    use pnet::packet::ip::IpNextHeaderProtocols;
+    use pnet::packet::ipv4::{Ipv4Packet, MutableIpv4Packet};
+    use pnet::packet::udp::{MutableUdpPacket, UdpPacket};
+    use pnet::packet::{MutablePacket, Packet};
+    use pnet::util::MacAddr;
+    use pnet_datalink::Channel::Ethernet;
+    use pnet_datalink::{DataLinkReceiver, DataLinkSender, NetworkInterface};

    use super::*;

    static DATA_STRING: &str = "test for tap";
    static SUBNET_MASK: &str = "255.255.255.0";

-    // We needed to have a mutex as a global variable, so we used the crate that provides the
-    // lazy_static! macro for testing. The main potential problem, caused by tests being run in
-    // parallel by cargo, is creating different TAPs and trying to associate the same address,
-    // so we hide the IP address &str behind this mutex, more as a convention to remember to lock
-    // it at the very beginning of each function susceptible to this issue. Another variant is
-    // to use a different IP address per function, but we must remember to pick an unique one
-    // each time.
-    lazy_static! {
-        static ref TAP_IP_LOCK: Mutex<&'static str> = Mutex::new("192.168.241.1");
-    }
+    // We needed to have a mutex as a global variable, so we used once_cell for testing. The main
+    // potential problem, caused by tests being run in parallel by cargo, is creating different
+    // TAPs and trying to associate the same address, so we hide the IP address &str behind this
+    // mutex, more as a convention to remember to lock it at the very beginning of each function
+    // susceptible to this issue. Another variant is to use a different IP address per function,
+    // but we must remember to pick an unique one each time.
+    static TAP_IP_LOCK: Lazy<Mutex<&'static str>> = Lazy::new(|| Mutex::new("192.168.241.1"));

    // Describes the outcomes we are currently interested in when parsing a packet (we use
    // an UDP packet for testing).
@@ -543,10 +538,10 @@ mod tests {
        let interface_name_matches = |iface: &NetworkInterface| iface.name == ifname;

        // Find the network interface with the provided name.
-        let interfaces = datalink::interfaces();
+        let interfaces = pnet_datalink::interfaces();
        let interface = interfaces.into_iter().find(interface_name_matches).unwrap();

-        if let Ok(Ethernet(tx, rx)) = datalink::channel(&interface, Default::default()) {
+        if let Ok(Ethernet(tx, rx)) = pnet_datalink::channel(&interface, Default::default()) {
            (interface.mac.unwrap(), tx, rx)
        } else {
            panic!("datalink channel error or unhandled channel type");
--- a/option_parser/src/lib.rs
+++ b/option_parser/src/lib.rs
@@ -77,7 +77,7 @@ impl OptionParser {
        }

        for option in split_commas_outside_brackets(input)?.iter() {
-            let parts: Vec<&str> = option.split('=').collect();
+            let parts: Vec<&str> = option.splitn(2, '=').collect();

            match self.options.get_mut(parts[0]) {
                None => return Err(OptionParserError::UnknownOption(parts[0].to_owned())),
--- a/pci/Cargo.toml
+++ b/pci/Cargo.toml
@@ -10,22 +10,21 @@ kvm = ["vfio-ioctls/kvm"]
 mshv = ["vfio-ioctls/mshv"]

 [dependencies]
-anyhow = "1.0.56"
+anyhow = "1.0.58"
 byteorder = "1.4.3"
 hypervisor = { path = "../hypervisor" }
 vfio-ioctls = { git = "https://github.com/rust-vmm/vfio", branch = "main", default-features = false }
 vfio_user = { path = "../vfio_user" }
 vmm-sys-util = "0.9.0"
-libc = "0.2.123"
-log = "0.4.16"
-serde = "1.0.136"
-serde_derive = "1.0.136"
-thiserror = "1.0.30"
+libc = "0.2.126"
+log = "0.4.17"
+serde = { version="1.0.138", features=["derive"] }
+thiserror = "1.0.31"
 versionize = "0.1.6"
 versionize_derive = "0.1.4"
 vm-allocator = { path = "../vm-allocator" }
 vm-device = { path = "../vm-device" }
-vm-memory = "0.7.0"
+vm-memory = "0.8.0"
 vm-migration = { path = "../vm-migration" }

 [dependencies.vfio-bindings]
--- a/pci/src/bus.rs
+++ b/pci/src/bus.rs
@@ -6,13 +6,13 @@ use crate::configuration::{
    PciBarRegionType, PciBridgeSubclass, PciClassCode, PciConfiguration, PciHeaderType,
 };
 use crate::device::{DeviceRelocation, Error as PciDeviceError, PciDevice};
+use crate::PciBarConfiguration;
 use byteorder::{ByteOrder, LittleEndian};
 use std::any::Any;
 use std::collections::HashMap;
 use std::ops::DerefMut;
 use std::sync::{Arc, Barrier, Mutex};
 use vm_device::{Bus, BusDevice};
-use vm_memory::{Address, GuestAddress, GuestUsize};

 const VENDOR_ID_INTEL: u16 = 0x8086;
 const DEVICE_ID_INTEL_VIRT_PCIE_HOST: u16 = 0x0d57;
@@ -88,6 +88,10 @@ impl PciDevice for PciRoot {
    fn as_any(&mut self) -> &mut dyn Any {
        self
    }
+
+    fn id(&self) -> Option<String> {
+        None
+    }
 }

 pub struct PciBus {
@@ -118,21 +122,21 @@ impl PciBus {
        dev: Arc<Mutex<dyn BusDevice>>,
        #[cfg(target_arch = "x86_64")] io_bus: &Bus,
        mmio_bus: &Bus,
-        bars: Vec<(GuestAddress, GuestUsize, PciBarRegionType)>,
+        bars: Vec<PciBarConfiguration>,
    ) -> Result<()> {
-        for (address, size, type_) in bars {
-            match type_ {
+        for bar in bars {
+            match bar.region_type() {
                PciBarRegionType::IoRegion => {
                    #[cfg(target_arch = "x86_64")]
                    io_bus
-                        .insert(dev.clone(), address.raw_value(), size)
+                        .insert(dev.clone(), bar.addr(), bar.size())
                        .map_err(PciRootError::PioInsert)?;
                    #[cfg(target_arch = "aarch64")]
                    error!("I/O region is not supported");
                }
                PciBarRegionType::Memory32BitRegion | PciBarRegionType::Memory64BitRegion => {
                    mmio_bus
-                        .insert(dev.clone(), address.raw_value(), size)
+                        .insert(dev.clone(), bar.addr(), bar.size())
                        .map_err(PciRootError::MmioInsert)?;
                }
            }
--- a/pci/src/configuration.rs
+++ b/pci/src/configuration.rs
@@ -9,6 +9,7 @@ use std::fmt::{self, Display};
 use std::sync::{Arc, Mutex};
 use versionize::{VersionMap, Versionize, VersionizeError, VersionizeResult};
 use versionize_derive::Versionize;
+use vm_device::PciBarType;
 use vm_migration::{MigratableError, Pausable, Snapshot, Snapshottable, VersionMapped};

 // The number of 32bit registers in the config space, 4096 bytes.
@@ -18,6 +19,7 @@ const STATUS_REG: usize = 1;
 const STATUS_REG_CAPABILITIES_USED_MASK: u32 = 0x0010_0000;
 const BAR0_REG: usize = 4;
 const ROM_BAR_REG: usize = 12;
+const ROM_BAR_IDX: usize = 6;
 const BAR_IO_ADDR_MASK: u32 = 0xffff_fffc;
 const BAR_MEM_ADDR_MASK: u32 = 0xffff_fff0;
 const ROM_BAR_ADDR_MASK: u32 = 0xffff_f800;
@@ -185,7 +187,7 @@ pub trait PciProgrammingInterface {
 }

 /// Types of PCI capabilities.
-#[derive(PartialEq, Copy, Clone)]
+#[derive(PartialEq, Eq, Copy, Clone)]
 #[allow(dead_code)]
 #[allow(non_camel_case_types)]
 #[repr(C)]
@@ -319,24 +321,55 @@ pub struct PciConfiguration {
 }

 /// See pci_regs.h in kernel
-#[derive(Copy, Clone, PartialEq, Versionize, Debug)]
+#[derive(Copy, Clone, PartialEq, Eq, Versionize, Debug)]
 pub enum PciBarRegionType {
    Memory32BitRegion = 0,
    IoRegion = 0x01,
    Memory64BitRegion = 0x04,
 }

+impl From<PciBarType> for PciBarRegionType {
+    fn from(type_: PciBarType) -> Self {
+        match type_ {
+            PciBarType::Io => PciBarRegionType::IoRegion,
+            PciBarType::Mmio32 => PciBarRegionType::Memory32BitRegion,
+            PciBarType::Mmio64 => PciBarRegionType::Memory64BitRegion,
+        }
+    }
+}
+
+#[allow(clippy::from_over_into)]
+impl Into<PciBarType> for PciBarRegionType {
+    fn into(self) -> PciBarType {
+        match self {
+            PciBarRegionType::IoRegion => PciBarType::Io,
+            PciBarRegionType::Memory32BitRegion => PciBarType::Mmio32,
+            PciBarRegionType::Memory64BitRegion => PciBarType::Mmio64,
+        }
+    }
+}
+
 #[derive(Copy, Clone)]
 pub enum PciBarPrefetchable {
    NotPrefetchable = 0,
    Prefetchable = 0x08,
 }

+#[allow(clippy::from_over_into)]
+impl Into<bool> for PciBarPrefetchable {
+    fn into(self) -> bool {
+        match self {
+            PciBarPrefetchable::NotPrefetchable => false,
+            PciBarPrefetchable::Prefetchable => true,
+        }
+    }
+}
+
 #[derive(Copy, Clone)]
 pub struct PciBarConfiguration {
    addr: u64,
    size: u64,
-    reg_idx: usize,
+    idx: usize,
    region_type: PciBarRegionType,
    prefetchable: PciBarPrefetchable,
 }
@@ -556,22 +589,23 @@ impl PciConfiguration {

    /// Adds a region specified by `config`.  Configures the specified BAR(s) to
    /// report this region and size to the guest kernel.  Enforces a few constraints
-    /// (i.e, region size must be power of two, register not already used). Returns 'None' on
-    /// failure all, `Some(BarIndex)` on success.
-    pub fn add_pci_bar(&mut self, config: &PciBarConfiguration) -> Result<usize> {
-        if self.bars[config.reg_idx].used {
-            return Err(Error::BarInUse(config.reg_idx));
+    /// (i.e, region size must be power of two, register not already used).
+    pub fn add_pci_bar(&mut self, config: &PciBarConfiguration) -> Result<()> {
+        let bar_idx = config.idx;
+        let reg_idx = BAR0_REG + bar_idx;
+
+        if self.bars[bar_idx].used {
+            return Err(Error::BarInUse(bar_idx));
        }

        if config.size.count_ones() != 1 {
            return Err(Error::BarSizeInvalid(config.size));
        }

-        if config.reg_idx >= NUM_BAR_REGS {
-            return Err(Error::BarInvalid(config.reg_idx));
+        if bar_idx >= NUM_BAR_REGS {
+            return Err(Error::BarInvalid(bar_idx));
        }

-        let bar_idx = BAR0_REG + config.reg_idx;
        let end_addr = config
            .addr
            .checked_add(config.size - 1)
@@ -584,20 +618,20 @@ impl PciConfiguration {

                // Encode the BAR size as expected by the software running in
                // the guest.
-                self.bars[config.reg_idx].size =
+                self.bars[bar_idx].size =
                    encode_32_bits_bar_size(config.size as u32).ok_or(Error::Encode32BarSize)?;
            }
            PciBarRegionType::Memory64BitRegion => {
-                if config.reg_idx + 1 >= NUM_BAR_REGS {
-                    return Err(Error::BarInvalid64(config.reg_idx));
+                if bar_idx + 1 >= NUM_BAR_REGS {
+                    return Err(Error::BarInvalid64(bar_idx));
                }

                if end_addr > u64::max_value() {
                    return Err(Error::BarAddressInvalid(config.addr, config.size));
                }

-                if self.bars[config.reg_idx + 1].used {
-                    return Err(Error::BarInUse64(config.reg_idx));
+                if self.bars[bar_idx + 1].used {
+                    return Err(Error::BarInUse64(bar_idx));
                }

                // Encode the BAR size as expected by the software running in
@@ -605,12 +639,12 @@ impl PciConfiguration {
                let (bar_size_hi, bar_size_lo) =
                    encode_64_bits_bar_size(config.size).ok_or(Error::Encode64BarSize)?;

-                self.registers[bar_idx + 1] = (config.addr >> 32) as u32;
-                self.writable_bits[bar_idx + 1] = 0xffff_ffff;
-                self.bars[config.reg_idx + 1].addr = self.registers[bar_idx + 1];
-                self.bars[config.reg_idx].size = bar_size_lo;
-                self.bars[config.reg_idx + 1].size = bar_size_hi;
-                self.bars[config.reg_idx + 1].used = true;
+                self.registers[reg_idx + 1] = (config.addr >> 32) as u32;
+                self.writable_bits[reg_idx + 1] = 0xffff_ffff;
+                self.bars[bar_idx + 1].addr = self.registers[reg_idx + 1];
+                self.bars[bar_idx].size = bar_size_lo;
+                self.bars[bar_idx + 1].size = bar_size_hi;
+                self.bars[bar_idx + 1].used = true;
            }
        }

@@ -622,26 +656,30 @@ impl PciConfiguration {
            PciBarRegionType::IoRegion => (BAR_IO_ADDR_MASK, config.region_type as u32),
        };

-        self.registers[bar_idx] = ((config.addr as u32) & mask) | lower_bits;
-        self.writable_bits[bar_idx] = mask;
-        self.bars[config.reg_idx].addr = self.registers[bar_idx];
-        self.bars[config.reg_idx].used = true;
-        self.bars[config.reg_idx].r#type = Some(config.region_type);
-        Ok(config.reg_idx)
+        self.registers[reg_idx] = ((config.addr as u32) & mask) | lower_bits;
+        self.writable_bits[reg_idx] = mask;
+        self.bars[bar_idx].addr = self.registers[reg_idx];
+        self.bars[bar_idx].used = true;
+        self.bars[bar_idx].r#type = Some(config.region_type);
+
+        Ok(())
    }

    /// Adds rom expansion BAR.
-    pub fn add_pci_rom_bar(&mut self, config: &PciBarConfiguration, active: u32) -> Result<usize> {
+    pub fn add_pci_rom_bar(&mut self, config: &PciBarConfiguration, active: u32) -> Result<()> {
+        let bar_idx = config.idx;
+        let reg_idx = ROM_BAR_REG;
+
        if self.rom_bar_used {
-            return Err(Error::RomBarInUse(config.reg_idx));
+            return Err(Error::RomBarInUse(bar_idx));
        }

        if config.size.count_ones() != 1 {
            return Err(Error::RomBarSizeInvalid(config.size));
        }

-        if config.reg_idx != ROM_BAR_REG {
-            return Err(Error::RomBarInvalid(config.reg_idx));
+        if bar_idx != ROM_BAR_IDX {
+            return Err(Error::RomBarInvalid(bar_idx));
        }

        let end_addr = config
@@ -653,13 +691,14 @@ impl PciConfiguration {
            return Err(Error::RomBarAddressInvalid(config.addr, config.size));
        }

-        self.registers[config.reg_idx] = (config.addr as u32) | active;
-        self.writable_bits[config.reg_idx] = ROM_BAR_ADDR_MASK;
-        self.rom_bar_addr = self.registers[config.reg_idx];
+        self.registers[reg_idx] = (config.addr as u32) | active;
+        self.writable_bits[reg_idx] = ROM_BAR_ADDR_MASK;
+        self.rom_bar_addr = self.registers[reg_idx];
        self.rom_bar_size =
            encode_32_bits_bar_size(config.size as u32).ok_or(Error::Encode32BarSize)?;
        self.rom_bar_used = true;
-        Ok(config.reg_idx)
+
+        Ok(())
    }

    /// Returns the address of the given BAR region.
@@ -911,7 +950,7 @@ impl Snapshottable for PciConfiguration {
 impl Default for PciBarConfiguration {
    fn default() -> Self {
        PciBarConfiguration {
-            reg_idx: 0,
+            idx: 0,
            addr: 0,
            size: 0,
            region_type: PciBarRegionType::Memory64BitRegion,
@@ -922,13 +961,13 @@ impl Default for PciBarConfiguration {

 impl PciBarConfiguration {
    pub fn new(
-        reg_idx: usize,
+        idx: usize,
        size: u64,
        region_type: PciBarRegionType,
        prefetchable: PciBarPrefetchable,
    ) -> Self {
        PciBarConfiguration {
-            reg_idx,
+            idx,
            addr: 0,
            size,
            region_type,
@@ -937,8 +976,8 @@ impl PciBarConfiguration {
    }

    #[must_use]
-    pub fn set_register_index(mut self, reg_idx: usize) -> Self {
-        self.reg_idx = reg_idx;
+    pub fn set_index(mut self, idx: usize) -> Self {
+        self.idx = idx;
        self
    }

@@ -954,15 +993,31 @@ impl PciBarConfiguration {
        self
    }

-    pub fn get_size(&self) -> u64 {
-        self.size
-    }
-
    #[must_use]
    pub fn set_region_type(mut self, region_type: PciBarRegionType) -> Self {
        self.region_type = region_type;
        self
    }
+
+    pub fn idx(&self) -> usize {
+        self.idx
+    }
+
+    pub fn addr(&self) -> u64 {
+        self.addr
+    }
+
+    pub fn size(&self) -> u64 {
+        self.size
+    }
+
+    pub fn region_type(&self) -> PciBarRegionType {
+        self.region_type
+    }
+
+    pub fn prefetchable(&self) -> PciBarPrefetchable {
+        self.prefetchable
+    }
 }

 #[cfg(test)]
--- a/pci/src/device.rs
+++ b/pci/src/device.rs
@@ -3,13 +3,13 @@
 // found in the LICENSE-BSD-3-Clause file.

 use crate::configuration::{self, PciBarRegionType};
+use crate::PciBarConfiguration;
 use std::any::Any;
 use std::fmt::{self, Display};
 use std::sync::{Arc, Barrier, Mutex};
 use std::{self, io, result};
 use vm_allocator::{AddressAllocator, SystemAllocator};
-use vm_device::BusDevice;
-use vm_memory::{GuestAddress, GuestUsize};
+use vm_device::{BusDevice, Resource};

 #[derive(Debug)]
 pub enum Error {
@@ -19,6 +19,8 @@ pub enum Error {
    IoAllocationFailed(u64),
    /// Registering an IO BAR failed.
    IoRegistrationFailed(u64, configuration::Error),
+    /// Expected resource not found.
+    MissingResource,
 }
 pub type Result<T> = std::result::Result<T, Error>;

@@ -34,6 +36,7 @@ impl Display for Error {
            IoRegistrationFailed(addr, e) => {
                write!(f, "failed to register an IO BAR, addr={} err={}", addr, e)
            }
+            MissingResource => write!(f, "failed to find expected resource"),
        }
    }
 }
@@ -53,7 +56,8 @@ pub trait PciDevice: BusDevice {
        &mut self,
        _allocator: &Arc<Mutex<SystemAllocator>>,
        _mmio_allocator: &mut AddressAllocator,
-    ) -> Result<Vec<(GuestAddress, GuestUsize, PciBarRegionType)>> {
+        _resources: Option<Vec<Resource>>,
+    ) -> Result<Vec<PciBarConfiguration>> {
        Ok(Vec::new())
    }

@@ -103,6 +107,9 @@ pub trait PciDevice: BusDevice {
    /// Provides a mutable reference to the Any trait. This is useful to let
    /// the caller have access to the underlying type behind the trait.
    fn as_any(&mut self) -> &mut dyn Any;
+
+    /// Optionally returns a unique identifier.
+    fn id(&self) -> Option<String>;
 }

 /// This trait defines a set of functions which can be triggered whenever a
--- a/pci/src/lib.rs
+++ b/pci/src/lib.rs
@@ -52,7 +52,7 @@ pub const PCI_CONFIG_IO_PORT: u64 = 0xcf8;
 #[cfg(target_arch = "x86_64")]
 pub const PCI_CONFIG_IO_PORT_SIZE: u64 = 0x8;

-#[derive(Clone, Copy, PartialEq, PartialOrd)]
+#[derive(Clone, Copy, PartialEq, Eq, PartialOrd)]
 pub struct PciBdf(u32);

 struct PciBdfVisitor;
--- a/pci/src/msi.rs
+++ b/pci/src/msi.rs
@@ -3,11 +3,17 @@
 // SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
 //

+use anyhow::anyhow;
 use byteorder::{ByteOrder, LittleEndian};
+use std::io;
 use std::sync::Arc;
+use thiserror::Error;
+use versionize::{VersionMap, Versionize, VersionizeResult};
+use versionize_derive::Versionize;
 use vm_device::interrupt::{
    InterruptIndex, InterruptSourceConfig, InterruptSourceGroup, MsiIrqSourceConfig,
 };
+use vm_migration::{MigratableError, Pausable, Snapshot, Snapshottable, VersionMapped};

 // MSI control masks
 const MSI_CTL_ENABLE: u16 = 0x1;
@@ -32,7 +38,15 @@ pub fn msi_num_enabled_vectors(msg_ctl: u16) -> usize {
    1 << field
 }

-#[derive(Clone, Copy, Default)]
+#[derive(Error, Debug)]
+enum Error {
+    #[error("Failed enabling the interrupt route: {0}")]
+    EnableInterruptRoute(io::Error),
+    #[error("Failed updating the interrupt route: {0}")]
+    UpdateInterruptRoute(io::Error),
+}
+
+#[derive(Clone, Copy, Default, Versionize)]
 pub struct MsiCap {
    // Message Control Register
    //   0:     MSI enable.
@@ -157,8 +171,15 @@ impl MsiCap {
    }
 }

-pub struct MsiConfig {
+#[derive(Versionize)]
+struct MsiConfigState {
    cap: MsiCap,
+}
+
+impl VersionMapped for MsiConfigState {}
+
+pub struct MsiConfig {
+    pub cap: MsiCap,
    interrupt_source_group: Arc<dyn InterruptSourceGroup>,
 }

@@ -175,6 +196,39 @@ impl MsiConfig {
        }
    }

+    fn state(&self) -> MsiConfigState {
+        MsiConfigState { cap: self.cap }
+    }
+
+    fn set_state(&mut self, state: &MsiConfigState) -> Result<(), Error> {
+        self.cap = state.cap;
+
+        if self.enabled() {
+            for idx in 0..self.num_enabled_vectors() {
+                let config = MsiIrqSourceConfig {
+                    high_addr: self.cap.msg_addr_hi,
+                    low_addr: self.cap.msg_addr_lo,
+                    data: self.cap.msg_data as u32,
+                    devid: 0,
+                };
+
+                self.interrupt_source_group
+                    .update(
+                        idx as InterruptIndex,
+                        InterruptSourceConfig::MsiIrq(config),
+                        self.cap.vector_masked(idx),
+                    )
+                    .map_err(Error::UpdateInterruptRoute)?;
+            }
+
+            self.interrupt_source_group
+                .enable()
+                .map_err(Error::EnableInterruptRoute)?;
+        }
+
+        Ok(())
+    }
+
    pub fn enabled(&self) -> bool {
        self.cap.enabled()
    }
@@ -222,3 +276,26 @@ impl MsiConfig {
        }
    }
 }
+
+impl Pausable for MsiConfig {}
+
+impl Snapshottable for MsiConfig {
+    fn id(&self) -> String {
+        String::from("msi_config")
+    }
+
+    fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
+        Snapshot::new_from_versioned_state(&self.id(), &self.state())
+    }
+
+    fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
+        self.set_state(&snapshot.to_versioned_state(&self.id())?)
+            .map_err(|e| {
+                MigratableError::Restore(anyhow!(
+                    "Could not restore state for {}: {:?}",
+                    self.id(),
+                    e
+                ))
+            })
+    }
+}
--- a/pci/src/msix.rs
+++ b/pci/src/msix.rs
@@ -441,7 +441,7 @@ impl Snapshottable for MsixConfig {

 #[allow(dead_code)]
 #[repr(packed)]
-#[derive(Clone, Copy, Default)]
+#[derive(Clone, Copy, Default, Versionize)]
 pub struct MsixCap {
    // Message Control Register
    //   10-0:  MSI-X Table size
--- a/pci/src/vfio.rs
+++ b/pci/src/vfio.rs
--- a/pci/src/vfio_user.rs
+++ b/pci/src/vfio_user.rs
@@ -3,11 +3,12 @@
 // SPDX-License-Identifier: Apache-2.0
 //

-use crate::vfio::{Interrupt, Vfio, VfioCommon, VfioError};
-use crate::{BarReprogrammingParams, PciBarRegionType, VfioPciError};
+use crate::vfio::{Interrupt, UserMemoryRegion, Vfio, VfioCommon, VfioError};
+use crate::{BarReprogrammingParams, PciBarConfiguration, VfioPciError};
 use crate::{
    PciBdf, PciClassCode, PciConfiguration, PciDevice, PciDeviceError, PciHeaderType, PciSubclass,
 };
+use anyhow::anyhow;
 use hypervisor::HypervisorVmError;
 use std::any::Any;
 use std::os::unix::prelude::AsRawFd;
@@ -21,19 +22,20 @@ use vfio_user::{Client, Error as VfioUserError};
 use vm_allocator::{AddressAllocator, SystemAllocator};
 use vm_device::dma_mapping::ExternalDmaMapping;
 use vm_device::interrupt::{InterruptManager, InterruptSourceGroup, MsiIrqGroupConfig};
-use vm_device::BusDevice;
+use vm_device::{BusDevice, Resource};
 use vm_memory::bitmap::AtomicBitmap;
 use vm_memory::{
    Address, GuestAddress, GuestAddressSpace, GuestMemory, GuestMemoryRegion, GuestRegionMmap,
-    GuestUsize,
 };
+use vm_migration::{Migratable, MigratableError, Pausable, Snapshot, Snapshottable, Transportable};
 use vmm_sys_util::eventfd::EventFd;

 pub struct VfioUserPciDevice {
+    id: String,
    vm: Arc<dyn hypervisor::Vm>,
    client: Arc<Mutex<Client>>,
-    vfio_wrapper: VfioUserClientWrapper,
    common: VfioCommon,
+    memory_slot: Arc<dyn Fn() -> u32 + Send + Sync>,
 }

 #[derive(Error, Debug)]
@@ -62,12 +64,16 @@ impl PciSubclass for PciVfioUserSubclass {
 }

 impl VfioUserPciDevice {
+    #[allow(clippy::too_many_arguments)]
    pub fn new(
+        id: String,
        vm: &Arc<dyn hypervisor::Vm>,
        client: Arc<Mutex<Client>>,
-        msi_interrupt_manager: &Arc<dyn InterruptManager<GroupConfig = MsiIrqGroupConfig>>,
+        msi_interrupt_manager: Arc<dyn InterruptManager<GroupConfig = MsiIrqGroupConfig>>,
        legacy_interrupt_group: Option<Arc<dyn InterruptSourceGroup>>,
        bdf: PciBdf,
+        restoring: bool,
+        memory_slot: Arc<dyn Fn() -> u32 + Send + Sync>,
    ) -> Result<Self, VfioUserPciDeviceError> {
        // This is used for the BAR and capabilities only
        let configuration = PciConfiguration::new(
@@ -103,29 +109,31 @@ impl VfioUserPciDevice {
                msi: None,
                msix: None,
            },
+            msi_interrupt_manager,
+            legacy_interrupt_group,
+            vfio_wrapper: Arc::new(vfio_wrapper) as Arc<dyn Vfio>,
        };

-        common.parse_capabilities(msi_interrupt_manager, &vfio_wrapper, bdf);
-        common
-            .initialize_legacy_interrupt(legacy_interrupt_group, &vfio_wrapper)
-            .map_err(VfioUserPciDeviceError::InitializeLegacyInterrupts)?;
+        // No need to parse capabilities from the device if on the restore path.
+        // The initialization will be performed later when restore() will be
+        // called.
+        if !restoring {
+            common.parse_capabilities(bdf);
+            common
+                .initialize_legacy_interrupt()
+                .map_err(VfioUserPciDeviceError::InitializeLegacyInterrupts)?;
+        }

        Ok(Self {
+            id,
            vm: vm.clone(),
            client,
-            vfio_wrapper,
            common,
+            memory_slot,
        })
    }

-    pub fn map_mmio_regions<F>(
-        &mut self,
-        vm: &Arc<dyn hypervisor::Vm>,
-        mem_slot: F,
-    ) -> Result<(), VfioUserPciDeviceError>
-    where
-        F: Fn() -> u32,
-    {
+    pub fn map_mmio_regions(&mut self) -> Result<(), VfioUserPciDeviceError> {
        for mmio_region in &mut self.common.mmio_regions {
            let region_flags = self
                .client
@@ -143,6 +151,15 @@ impl VfioUserPciDevice {
                .file_offset
                .clone();

+            let sparse_areas = self
+                .client
+                .lock()
+                .unwrap()
+                .region(mmio_region.index)
+                .unwrap()
+                .sparse_areas
+                .clone();
+
            if region_flags & VFIO_REGION_INFO_FLAG_MMAP != 0 {
                let mut prot = 0;
                if region_flags & VFIO_REGION_INFO_FLAG_READ != 0 {
@@ -152,41 +169,58 @@ impl VfioUserPciDevice {
                    prot |= libc::PROT_WRITE;
                }

-                let host_addr = unsafe {
-                    libc::mmap(
-                        null_mut(),
-                        mmio_region.length as usize,
-                        prot,
-                        libc::MAP_SHARED,
-                        file_offset.as_ref().unwrap().file().as_raw_fd(),
-                        file_offset.as_ref().unwrap().start() as libc::off_t,
-                    )
+                let mmaps = if sparse_areas.is_empty() {
+                    vec![vfio_region_sparse_mmap_area {
+                        offset: 0,
+                        size: mmio_region.length,
+                    }]
+                } else {
+                    sparse_areas
                };

-                if host_addr == libc::MAP_FAILED {
-                    error!(
-                        "Could not mmap regions, error:{}",
-                        std::io::Error::last_os_error()
+                for s in mmaps.iter() {
+                    let host_addr = unsafe {
+                        libc::mmap(
+                            null_mut(),
+                            s.size as usize,
+                            prot,
+                            libc::MAP_SHARED,
+                            file_offset.as_ref().unwrap().file().as_raw_fd(),
+                            file_offset.as_ref().unwrap().start() as libc::off_t
+                                + s.offset as libc::off_t,
+                        )
+                    };
+
+                    if host_addr == libc::MAP_FAILED {
+                        error!(
+                            "Could not mmap regions, error:{}",
+                            std::io::Error::last_os_error()
+                        );
+                        continue;
+                    }
+
+                    let user_memory_region = UserMemoryRegion {
+                        slot: (self.memory_slot)(),
+                        start: mmio_region.start.0 + s.offset,
+                        size: s.size,
+                        host_addr: host_addr as u64,
+                    };
+
+                    mmio_region.user_memory_regions.push(user_memory_region);
+
+                    let mem_region = self.vm.make_user_memory_region(
+                        user_memory_region.slot,
+                        user_memory_region.start,
+                        user_memory_region.size,
+                        user_memory_region.host_addr,
+                        false,
+                        false,
                    );
-                    continue;
+
+                    self.vm
+                        .create_user_memory_region(mem_region)
+                        .map_err(VfioUserPciDeviceError::MapRegionGuest)?;
                }
-
-                let slot = mem_slot();
-                let mem_region = vm.make_user_memory_region(
-                    slot,
-                    mmio_region.start.0,
-                    mmio_region.length as u64,
-                    host_addr as u64,
-                    false,
-                    false,
-                );
-
-                vm.create_user_memory_region(mem_region)
-                    .map_err(VfioUserPciDeviceError::MapRegionGuest)?;
-
-                mmio_region.mem_slot = Some(slot);
-                mmio_region.host_addr = Some(host_addr as u64);
-                mmio_region.mmap_size = Some(mmio_region.length as usize);
            }
        }

@@ -195,17 +229,13 @@ impl VfioUserPciDevice {

    pub fn unmap_mmio_regions(&mut self) {
        for mmio_region in self.common.mmio_regions.iter() {
-            if let (Some(host_addr), Some(mmap_size), Some(mem_slot)) = (
-                mmio_region.host_addr,
-                mmio_region.mmap_size,
-                mmio_region.mem_slot,
-            ) {
+            for user_memory_region in mmio_region.user_memory_regions.iter() {
                // Remove region
                let r = self.vm.make_user_memory_region(
-                    mem_slot,
-                    mmio_region.start.raw_value(),
-                    mmap_size as u64,
-                    host_addr as u64,
+                    user_memory_region.slot,
+                    user_memory_region.start,
+                    user_memory_region.size,
+                    user_memory_region.host_addr,
                    false,
                    false,
                );
@@ -214,7 +244,13 @@ impl VfioUserPciDevice {
                    error!("Could not remove the userspace memory region: {}", e);
                }

-                let ret = unsafe { libc::munmap(host_addr as *mut libc::c_void, mmap_size) };
+                // Remove mmaps
+                let ret = unsafe {
+                    libc::munmap(
+                        user_memory_region.host_addr as *mut libc::c_void,
+                        user_memory_region.size as usize,
+                    )
+                };
                if ret != 0 {
                    error!(
                        "Could not unmap region {}, error:{}",
@@ -392,9 +428,10 @@ impl PciDevice for VfioUserPciDevice {
        &mut self,
        allocator: &Arc<Mutex<SystemAllocator>>,
        mmio_allocator: &mut AddressAllocator,
-    ) -> Result<Vec<(GuestAddress, GuestUsize, PciBarRegionType)>, PciDeviceError> {
+        resources: Option<Vec<Resource>>,
+    ) -> Result<Vec<PciBarConfiguration>, PciDeviceError> {
        self.common
-            .allocate_bars(allocator, mmio_allocator, &self.vfio_wrapper)
+            .allocate_bars(allocator, mmio_allocator, resources)
    }

    fn free_bars(
@@ -425,22 +462,19 @@ impl PciDevice for VfioUserPciDevice {
        offset: u64,
        data: &[u8],
    ) -> Option<Arc<Barrier>> {
-        self.common
-            .write_config_register(reg_idx, offset, data, &self.vfio_wrapper)
+        self.common.write_config_register(reg_idx, offset, data)
    }

    fn read_config_register(&mut self, reg_idx: usize) -> u32 {
-        self.common
-            .read_config_register(reg_idx, &self.vfio_wrapper)
+        self.common.read_config_register(reg_idx)
    }

    fn read_bar(&mut self, base: u64, offset: u64, data: &mut [u8]) {
-        self.common.read_bar(base, offset, data, &self.vfio_wrapper)
+        self.common.read_bar(base, offset, data)
    }

    fn write_bar(&mut self, base: u64, offset: u64, data: &[u8]) -> Option<Arc<Barrier>> {
-        self.common
-            .write_bar(base, offset, data, &self.vfio_wrapper)
+        self.common.write_bar(base, offset, data)
    }

    fn move_bar(&mut self, old_base: u64, new_base: u64) -> Result<(), std::io::Error> {
@@ -449,35 +483,41 @@ impl PciDevice for VfioUserPciDevice {
            if mmio_region.start.raw_value() == old_base {
                mmio_region.start = GuestAddress(new_base);

-                if let Some(mem_slot) = mmio_region.mem_slot {
-                    if let Some(host_addr) = mmio_region.host_addr {
-                        // Remove original region
-                        let old_region = self.vm.make_user_memory_region(
-                            mem_slot,
-                            old_base,
-                            mmio_region.length as u64,
-                            host_addr as u64,
-                            false,
-                            false,
-                        );
+                for user_memory_region in mmio_region.user_memory_regions.iter_mut() {
+                    // Remove old region
+                    let old_region = self.vm.make_user_memory_region(
+                        user_memory_region.slot,
+                        user_memory_region.start,
+                        user_memory_region.size,
+                        user_memory_region.host_addr,
+                        false,
+                        false,
+                    );

-                        self.vm
-                            .remove_user_memory_region(old_region)
-                            .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+                    self.vm
+                        .remove_user_memory_region(old_region)
+                        .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;

-                        let new_region = self.vm.make_user_memory_region(
-                            mem_slot,
-                            new_base,
-                            mmio_region.length as u64,
-                            host_addr as u64,
-                            false,
-                            false,
-                        );
-
-                        self.vm
-                            .create_user_memory_region(new_region)
-                            .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
+                    // Update the user memory region with the correct start address.
+                    if new_base > old_base {
+                        user_memory_region.start += new_base - old_base;
+                    } else {
+                        user_memory_region.start -= old_base - new_base;
                    }
+
+                    // Insert new region
+                    let new_region = self.vm.make_user_memory_region(
+                        user_memory_region.slot,
+                        user_memory_region.start,
+                        user_memory_region.size,
+                        user_memory_region.host_addr,
+                        false,
+                        false,
+                    );
+
+                    self.vm
+                        .create_user_memory_region(new_region)
+                        .map_err(|e| std::io::Error::new(std::io::ErrorKind::Other, e))?;
                }
                info!("Moved bar 0x{:x} -> 0x{:x}", old_base, new_base);
            }
@@ -485,6 +525,10 @@ impl PciDevice for VfioUserPciDevice {

        Ok(())
    }
+
+    fn id(&self) -> Option<String> {
+        Some(self.id.clone())
+    }
 }

 impl Drop for VfioUserPciDevice {
@@ -493,18 +537,18 @@ impl Drop for VfioUserPciDevice {

        if let Some(msix) = &self.common.interrupt.msix {
            if msix.bar.enabled() {
-                self.common.disable_msix(&self.vfio_wrapper);
+                self.common.disable_msix();
            }
        }

        if let Some(msi) = &self.common.interrupt.msi {
            if msi.cfg.enabled() {
-                self.common.disable_msi(&self.vfio_wrapper)
+                self.common.disable_msi()
            }
        }

        if self.common.interrupt.intx_in_use() {
-            self.common.disable_intx(&self.vfio_wrapper);
+            self.common.disable_intx();
        }

        if let Err(e) = self.client.lock().unwrap().shutdown() {
@@ -513,6 +557,40 @@ impl Drop for VfioUserPciDevice {
    }
 }

+impl Pausable for VfioUserPciDevice {}
+
+impl Snapshottable for VfioUserPciDevice {
+    fn id(&self) -> String {
+        self.id.clone()
+    }
+
+    fn snapshot(&mut self) -> std::result::Result<Snapshot, MigratableError> {
+        let mut vfio_pci_dev_snapshot = Snapshot::new(&self.id);
+
+        // Snapshot VfioCommon
+        vfio_pci_dev_snapshot.add_snapshot(self.common.snapshot()?);
+
+        Ok(vfio_pci_dev_snapshot)
+    }
+
+    fn restore(&mut self, snapshot: Snapshot) -> std::result::Result<(), MigratableError> {
+        // Restore VfioCommon
+        if let Some(vfio_common_snapshot) = snapshot.snapshots.get(&self.common.id()) {
+            self.common.restore(*vfio_common_snapshot.clone())?;
+            self.map_mmio_regions().map_err(|e| {
+                MigratableError::Restore(anyhow!(
+                    "Could not map MMIO regions for VfioUserPciDevice on restore {:?}",
+                    e
+                ))
+            })?;
+        }
+
+        Ok(())
+    }
+}
+impl Transportable for VfioUserPciDevice {}
+impl Migratable for VfioUserPciDevice {}
+
 pub struct VfioUserDmaMapping<M: GuestAddressSpace> {
    client: Arc<Mutex<Client>>,
    memory: Arc<M>,
@@ -546,10 +624,10 @@ impl<M: GuestAddressSpace + Sync + Send> ExternalDmaMapping for VfioUserDmaMappi
                    )
                })
        } else {
-            return Err(std::io::Error::new(
+            Err(std::io::Error::new(
                std::io::ErrorKind::Other,
                format!("Region not found for 0x{:x}", gpa),
-            ));
+            ))
        }
    }

--- a/performance-metrics/Cargo.toml
+++ b/performance-metrics/Cargo.toml
@@ -6,14 +6,13 @@ edition = "2021"
 build = "build.rs"

 [dependencies]
-clap = { version = "3.1.8", features = ["wrap_help","cargo"] }
+clap = { version = "3.2.8", features = ["wrap_help","cargo"] }
 dirs = "4.0.0"
-serde = { version = "1.0.136", features = ["rc"] }
-serde_derive = "1.0.136"
-serde_json = "1.0.78"
+serde = { version = "1.0.138", features = ["rc", "derive"] }
+serde_json = "1.0.82"
 test_infra = { path = "../test_infra" }
-thiserror = "1.0.30"
+thiserror = "1.0.31"
 wait-timeout = "0.2.0"

 [build-dependencies]
-clap = { version = "3.1.8", features = ["cargo"] }
+clap = { version = "3.2.8", features = ["cargo"] }
--- a/performance-metrics/src/main.rs
+++ b/performance-metrics/src/main.rs
@@ -12,8 +12,14 @@ mod performance_tests;

 use clap::{Arg, Command as ClapCommand};
 use performance_tests::*;
-use serde_derive::{Deserialize, Serialize};
-use std::{env, fmt, process::Command, sync::mpsc::channel, thread, time::Duration};
+use serde::{Deserialize, Serialize};
+use std::{
+    env, fmt,
+    process::Command,
+    sync::{mpsc::channel, Arc},
+    thread,
+    time::Duration,
+};
 use thiserror::Error;

 #[derive(Error, Debug)]
@@ -47,18 +53,30 @@ impl Default for MetricsReport {
        let mut git_human_readable = "".to_string();
        if let Ok(git_out) = Command::new("git").args(&["describe", "--dirty"]).output() {
            if git_out.status.success() {
-                if let Ok(git_out_str) = String::from_utf8(git_out.stdout) {
-                    git_human_readable = git_out_str.trim().to_string();
-                }
+                git_human_readable = String::from_utf8(git_out.stdout)
+                    .unwrap()
+                    .trim()
+                    .to_string();
+            } else {
+                eprintln!(
+                    "Error generating human readable git reference: {}",
+                    String::from_utf8(git_out.stderr).unwrap()
+                );
            }
        }

        let mut git_revision = "".to_string();
        if let Ok(git_out) = Command::new("git").args(&["rev-parse", "HEAD"]).output() {
            if git_out.status.success() {
-                if let Ok(git_out_str) = String::from_utf8(git_out.stdout) {
-                    git_revision = git_out_str.trim().to_string();
-                }
+                git_revision = String::from_utf8(git_out.stdout)
+                    .unwrap()
+                    .trim()
+                    .to_string();
+            } else {
+                eprintln!(
+                    "Error generating git reference: {}",
+                    String::from_utf8(git_out.stderr).unwrap()
+                );
            }
        }

@@ -68,9 +86,15 @@ impl Default for MetricsReport {
            .output()
        {
            if git_out.status.success() {
-                if let Ok(git_out_str) = String::from_utf8(git_out.stdout) {
-                    git_commit_date = git_out_str.trim().to_string();
-                }
+                git_commit_date = String::from_utf8(git_out.stdout)
+                    .unwrap()
+                    .trim()
+                    .to_string();
+            } else {
+                eprintln!(
+                    "Error generating git commit date: {}",
+                    String::from_utf8(git_out.stderr).unwrap()
+                );
            }
        }

@@ -84,6 +108,21 @@ impl Default for MetricsReport {
    }
 }

+#[derive(Default)]
+pub struct PerformanceTestOverrides {
+    test_iterations: Option<u32>,
+}
+
+impl fmt::Display for PerformanceTestOverrides {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        if let Some(test_iterations) = self.test_iterations {
+            write!(f, "test_iterations = {}", test_iterations)?;
+        }
+
+        Ok(())
+    }
+}
+
 pub struct PerformanceTestControl {
    test_timeout: u32,
    test_iterations: u32,
@@ -91,6 +130,7 @@ pub struct PerformanceTestControl {
    queue_size: Option<u32>,
    net_rx: Option<bool>,
    fio_ops: Option<FioOps>,
+    num_boot_vcpus: Option<u8>,
 }

 impl fmt::Display for PerformanceTestControl {
@@ -125,6 +165,7 @@ impl PerformanceTestControl {
            queue_size: None,
            net_rx: None,
            fio_ops: None,
+            num_boot_vcpus: Some(1),
        }
    }
 }
@@ -140,9 +181,12 @@ struct PerformanceTest {
 }

 impl PerformanceTest {
-    pub fn run(&self) -> PerformanceTestResult {
+    pub fn run(&self, overrides: &PerformanceTestOverrides) -> PerformanceTestResult {
        let mut metrics = Vec::new();
-        for _ in 0..self.control.test_iterations {
+        for _ in 0..overrides
+            .test_iterations
+            .unwrap_or(self.control.test_iterations)
+        {
            metrics.push((self.func_ptr)(&self.control));
        }

@@ -162,8 +206,9 @@ impl PerformanceTest {

    // Calculate the timeout for each test
    // Note: To cover the setup/cleanup time, 20s is added for each iteration of the test
-    pub fn calc_timeout(&self) -> u64 {
-        ((self.control.test_timeout + 20) * self.control.test_iterations) as u64
+    pub fn calc_timeout(&self, test_iterations: &Option<u32>) -> u64 {
+        ((self.control.test_timeout + 20) * test_iterations.unwrap_or(self.control.test_iterations))
+            as u64
    }
 }

@@ -216,7 +261,7 @@ mod adjuster {
    }
 }

-const TEST_LIST: [PerformanceTest; 15] = [
+const TEST_LIST: [PerformanceTest; 17] = [
    PerformanceTest {
        name: "boot_time_ms",
        func_ptr: performance_boot_time,
@@ -237,6 +282,28 @@ const TEST_LIST: [PerformanceTest; 15] = [
        },
        unit_adjuster: adjuster::s_to_ms,
    },
+    PerformanceTest {
+        name: "boot_time_16_vcpus_ms",
+        func_ptr: performance_boot_time,
+        control: PerformanceTestControl {
+            test_timeout: 2,
+            test_iterations: 10,
+            num_boot_vcpus: Some(16),
+            ..PerformanceTestControl::default()
+        },
+        unit_adjuster: adjuster::s_to_ms,
+    },
+    PerformanceTest {
+        name: "boot_time_16_vcpus_pmem_ms",
+        func_ptr: performance_boot_time_pmem,
+        control: PerformanceTestControl {
+            test_timeout: 2,
+            test_iterations: 10,
+            num_boot_vcpus: Some(16),
+            ..PerformanceTestControl::default()
+        },
+        unit_adjuster: adjuster::s_to_ms,
+    },
    PerformanceTest {
        name: "virtio_net_latency_us",
        func_ptr: performance_net_latency,
@@ -381,12 +448,20 @@ const TEST_LIST: [PerformanceTest; 15] = [
    },
 ];

-fn run_test_with_timeout(test: &'static PerformanceTest) -> Result<PerformanceTestResult, Error> {
+fn run_test_with_timeout(
+    test: &'static PerformanceTest,
+    overrides: &Arc<PerformanceTestOverrides>,
+) -> Result<PerformanceTestResult, Error> {
    let (sender, receiver) = channel::<Result<PerformanceTestResult, Error>>();
+    let test_iterations = overrides.test_iterations;
+    let overrides = overrides.clone();
    thread::spawn(move || {
-        println!("Test '{}' running .. ({})", test.name, test.control);
+        println!(
+            "Test '{}' running .. (control: {}, overrides: {})",
+            test.name, test.control, overrides
+        );

-        let output = match std::panic::catch_unwind(|| test.run()) {
+        let output = match std::panic::catch_unwind(|| test.run(&overrides)) {
            Ok(test_result) => {
                println!(
                    "Test '{}' .. ok: mean = {}, std_dev = {}",
@@ -401,7 +476,7 @@ fn run_test_with_timeout(test: &'static PerformanceTest) -> Result<PerformanceTe
    });

    // Todo: Need to cleanup/kill all hanging child processes
-    let test_timeout = test.calc_timeout();
+    let test_timeout = test.calc_timeout(&test_iterations);
    receiver
        .recv_timeout(Duration::from_secs(test_timeout))
        .map_err(|_| {
@@ -445,6 +520,12 @@ fn main() {
                .help("Report file. Standard error is used if not specified")
                .takes_value(true),
        )
+        .arg(
+            Arg::new("iterations")
+                .long("iterations")
+                .help("Override number of test iterations")
+                .takes_value(true),
+        )
        .get_matches();

    // It seems that the tool (ethr) used for testing the virtio-net latency
@@ -473,9 +554,17 @@ fn main() {

    init_tests();

+    let overrides = Arc::new(PerformanceTestOverrides {
+        test_iterations: cmd_arguments
+            .value_of("iterations")
+            .map(|s| s.parse())
+            .transpose()
+            .unwrap_or_default(),
+    });
+
    for test in test_list.iter() {
        if test_filter.is_empty() || test_filter.iter().any(|&s| test.name.contains(s)) {
-            match run_test_with_timeout(test) {
+            match run_test_with_timeout(test, &overrides) {
                Ok(r) => {
                    metrics_report.results.push(r);
                }
--- a/performance-metrics/src/performance_tests.rs
+++ b/performance-metrics/src/performance_tests.rs
@@ -238,6 +238,7 @@ pub fn performance_net_throughput(control: &PerformanceTestControl) -> f64 {
        .default_disks()
        .args(&["--net", net_params.as_str()])
        .capture_output()
+        .verbosity(VerbosityLevel::Warn)
        .set_print_cmd(false)
        .spawn()
        .unwrap();
@@ -367,6 +368,7 @@ pub fn performance_net_latency(control: &PerformanceTestControl) -> f64 {
        .default_disks()
        .args(&["--net", net_params.as_str()])
        .capture_output()
+        .verbosity(VerbosityLevel::Warn)
        .set_print_cmd(false)
        .spawn()
        .unwrap();
@@ -472,7 +474,12 @@ fn parse_boot_time_output(output: &[u8]) -> Result<f64, Error> {
 }

 fn measure_boot_time(cmd: &mut GuestCommand, test_timeout: u32) -> Result<f64, Error> {
-    let mut child = cmd.capture_output().set_print_cmd(false).spawn().unwrap();
+    let mut child = cmd
+        .capture_output()
+        .verbosity(VerbosityLevel::Warn)
+        .set_print_cmd(false)
+        .spawn()
+        .unwrap();

    thread::sleep(Duration::new(test_timeout as u64, 0));
    let _ = child.kill();
@@ -499,6 +506,10 @@ pub fn performance_boot_time(control: &PerformanceTestControl) -> f64 {
        let mut cmd = GuestCommand::new(&guest);

        let c = cmd
+            .args(&[
+                "--cpus",
+                &format!("boot={}", control.num_boot_vcpus.unwrap_or(1)),
+            ])
            .args(&["--memory", "size=1G"])
            .args(&["--kernel", direct_kernel_boot_path().to_str().unwrap()])
            .args(&["--cmdline", DIRECT_KERNEL_BOOT_CMDLINE])
@@ -522,6 +533,10 @@ pub fn performance_boot_time_pmem(control: &PerformanceTestControl) -> f64 {
        let guest = performance_test_new_guest(Box::new(focal));
        let mut cmd = GuestCommand::new(&guest);
        let c = cmd
+            .args(&[
+                "--cpus",
+                &format!("boot={}", control.num_boot_vcpus.unwrap_or(1)),
+            ])
            .args(&["--memory", "size=1G,hugepages=on"])
            .args(&["--kernel", direct_kernel_boot_path().to_str().unwrap()])
            .args(&["--cmdline", "root=/dev/pmem0p1 console=ttyS0 quiet rw"])
@@ -655,6 +670,7 @@ pub fn performance_block_io(control: &PerformanceTestControl) -> f64 {
        .default_net()
        .args(&["--api-socket", &api_socket])
        .capture_output()
+        .verbosity(VerbosityLevel::Warn)
        .set_print_cmd(false)
        .spawn()
        .unwrap();
--- a/qcow/Cargo.toml
+++ b/qcow/Cargo.toml
@@ -10,7 +10,7 @@ path = "src/qcow.rs"

 [dependencies]
 byteorder = "1.4.3"
-libc = "0.2.123"
-log = "0.4.16"
-remain = "0.2.2"
+libc = "0.2.126"
+log = "0.4.17"
+remain = "0.2.3"
 vmm-sys-util = "0.9.0"
--- a/qcow/src/qcow.rs
+++ b/qcow/src/qcow.rs
@@ -516,6 +516,19 @@ impl QcowFile {

        let l2_entries = cluster_size / size_of::<u64>() as u64;

+        // Check for compressed blocks
+        for l2_addr_disk in l1_table.get_values() {
+            if *l2_addr_disk != 0 {
+                if let Err(e) = Self::read_l2_cluster(&mut raw_file, *l2_addr_disk) {
+                    if let Some(os_error) = e.raw_os_error() {
+                        if os_error == ENOTSUP {
+                            return Err(Error::CompressedBlocksNotSupported);
+                        }
+                    }
+                }
+            }
+        }
+
        let mut qcow = QcowFile {
            raw_file,
            header,
--- a/rate_limiter/Cargo.toml
+++ b/rate_limiter/Cargo.toml
@@ -4,6 +4,6 @@ version = "0.1.0"
 edition = "2021"

 [dependencies]
-libc = "0.2.123"
-log = "0.4.16"
+libc = "0.2.126"
+log = "0.4.17"
 vmm-sys-util = "0.9.0"
--- a/rate_limiter/src/lib.rs
+++ b/rate_limiter/src/lib.rs
@@ -91,7 +91,7 @@ pub enum BucketReduction {

 /// TokenBucket provides a lower level interface to rate limiting with a
 /// configurable capacity, refill-rate and initial burst.
-#[derive(Clone, Debug, PartialEq)]
+#[derive(Clone, Debug, PartialEq, Eq)]
 pub struct TokenBucket {
    // Bucket defining traits.
    size: u64,
--- a/release-notes.md
+++ b/release-notes.md
@@ -1,11 +1,28 @@
+- [v25.0](#v250)
+    - [`ch-remote` Improvements](#ch-remote-improvements)
+    - [VM "Coredump" Support](#vm-coredump-support)
+    - [Notable Bug Fixes](#notable-bug-fixes)
+    - [Removals](#removals)
+    - [Contributors](#contributors)
+- [v24.0](#v240)
+    - [Bypass Mode for `virtio-iommu`](#bypass-mode-for-virtio-iommu)
+    - [Ensure Identifiers Uniqueness](#ensure-identifiers-uniqueness)
+    - [Sparse Mmap support](#sparse-mmap-support)
+    - [Expose Platform Serial Number](#expose-platform-serial-number)
+    - [Notable Bug Fixes](#notable-bug-fixes-1)
+    - [Notable Improvements](#notable-improvements)
+    - [Deprecations](#deprecations)
+    - [New on the Website](#new-on-the-website)
+    - [Contributors](#contributors-1)
+- [v23.1](#v231)
 - [v23.0](#v230)
    - [vDPA Support](#vdpa-support)
    - [Updated OS Support list](#updated-os-support-list)
    - [`AArch64` Memory Map Improvements](#aarch64-memory-map-improvements)
    - [`AMX` Support](#amx-support)
-    - [Notable Bug Fixes](#notable-bug-fixes)
-    - [Deprecations](#deprecations)
-    - [Contributors](#contributors)
+    - [Notable Bug Fixes](#notable-bug-fixes-2)
+    - [Deprecations](#deprecations-1)
+    - [Contributors](#contributors-2)
 - [v22.1](#v221)
 - [v22.0](#v220)
    - [GDB Debug Stub Support](#gdb-debug-stub-support)
@@ -16,13 +33,13 @@
    - [PMU Support for AArch64](#pmu-support-for-aarch64)
    - [Documentation Under CC-BY-4.0 License](#documentation-under-cc-by-40-license)
    - [Deprecation of "Classic" `virtiofsd`](#deprecation-of-classic-virtiofsd)
-    - [Notable Bug Fixes](#notable-bug-fixes-1)
-    - [Contributors](#contributors-1)
+    - [Notable Bug Fixes](#notable-bug-fixes-3)
+    - [Contributors](#contributors-3)
 - [v21.0](#v210)
    - [Efficient Local Live Migration (for Live Upgrade)](#efficient-local-live-migration-for-live-upgrade)
    - [Recommended Kernel is Now 5.15](#recommended-kernel-is-now-515)
-    - [Notable Bug fixes](#notable-bug-fixes-2)
-    - [Contributors](#contributors-2)
+    - [Notable Bug fixes](#notable-bug-fixes-4)
+    - [Contributors](#contributors-4)
 - [v20.2](#v202)
 - [v20.1](#v201)
 - [v20.0](#v200)
@@ -31,8 +48,8 @@
    - [Improved VFIO support](#improved-vfio-support)
    - [Safer code](#safer-code)
    - [Extended documentation](#extended-documentation)
-    - [Notable bug fixes](#notable-bug-fixes-3)
-    - [Contributors](#contributors-3)
+    - [Notable bug fixes](#notable-bug-fixes-5)
+    - [Contributors](#contributors-5)
 - [v19.0](#v190)
    - [Improved PTY handling for serial and `virtio-console`](#improved-pty-handling-for-serial-and-virtio-console)
    - [PCI boot time optimisations](#pci-boot-time-optimisations)
@@ -40,8 +57,8 @@
    - [Live migration enhancements](#live-migration-enhancements)
    - [`virtio-mem` support with `vfio-user`](#virtio-mem-support-with-vfio-user)
    - [AArch64 for `virtio-iommu`](#aarch64-for-virtio-iommu)
-    - [Notable bug fixes](#notable-bug-fixes-4)
-    - [Contributors](#contributors-4)
+    - [Notable bug fixes](#notable-bug-fixes-6)
+    - [Contributors](#contributors-6)
 - [v18.0](#v180)
    - [Experimental User Device (`vfio-user`) support](#experimental-user-device-vfio-user-support)
    - [Migration support for `vhost-user` devices](#migration-support-for-vhost-user-devices)
@@ -51,31 +68,31 @@
    - [Live migration on MSHV hypervisor](#live-migration-on-mshv-hypervisor)
    - [AArch64 CPU topology support](#aarch64-cpu-topology-support)
    - [Power button support on AArch64](#power-button-support-on-aarch64)
-    - [Notable bug fixes](#notable-bug-fixes-5)
-    - [Contributors](#contributors-5)
+    - [Notable bug fixes](#notable-bug-fixes-7)
+    - [Contributors](#contributors-7)
 - [v17.0](#v170)
    - [ARM64 NUMA support using ACPI](#arm64-numa-support-using-acpi)
    - [`Seccomp` support for MSHV backend](#seccomp-support-for-mshv-backend)
    - [Hotplug of `macvtap` devices](#hotplug-of-macvtap-devices)
    - [Improved SGX support](#improved-sgx-support)
    - [Inflight tracking for `vhost-user` devices](#inflight-tracking-for-vhost-user-devices)
-    - [Notable bug fixes](#notable-bug-fixes-6)
-    - [Contributors](#contributors-6)
+    - [Notable bug fixes](#notable-bug-fixes-8)
+    - [Contributors](#contributors-8)
 - [v16.0](#v160)
    - [Improved live migration support](#improved-live-migration-support)
    - [Improved `vhost-user` support](#improved-vhost-user-support)
    - [ARM64 ACPI and UEFI support](#arm64-acpi-and-uefi-support)
-    - [Notable bug fixes](#notable-bug-fixes-7)
+    - [Notable bug fixes](#notable-bug-fixes-9)
    - [Removed functionality](#removed-functionality)
-    - [Contributors](#contributors-7)
+    - [Contributors](#contributors-9)
 - [v15.0](#v150)
    - [Version numbering and stability guarantees](#version-numbering-and-stability-guarantees)
    - [Network device rate limiting](#network-device-rate-limiting)
    - [Support for runtime control of `virtio-net` guest offload](#support-for-runtime-control-of-virtio-net-guest-offload)
    - [`--api-socket` supports file descriptor parameter](#--api-socket-supports-file-descriptor-parameter)
    - [Bug fixes](#bug-fixes)
-    - [Deprecations](#deprecations-1)
-    - [Contributors](#contributors-8)
+    - [Deprecations](#deprecations-2)
+    - [Contributors](#contributors-10)
 - [v0.14.1](#v0141)
 - [v0.14.0](#v0140)
    - [Structured event monitoring](#structured-event-monitoring)
@@ -84,8 +101,8 @@
    - [Updated hotplug documentation](#updated-hotplug-documentation)
    - [PTY control for serial and `virtio-console`](#pty-control-for-serial-and-virtio-console)
    - [Block device rate limiting](#block-device-rate-limiting)
-    - [Deprecations](#deprecations-2)
-    - [Contributors](#contributors-9)
+    - [Deprecations](#deprecations-3)
+    - [Contributors](#contributors-11)
 - [v0.13.0](#v0130)
    - [Wider VFIO device support](#wider-vfio-device-support)
    - [Improved huge page support](#improved-huge-page-support)
@@ -93,13 +110,13 @@
    - [VHD disk image support](#vhd-disk-image-support)
    - [Improved Virtio device threading](#improved-virtio-device-threading)
    - [Clean shutdown support via synthetic power button](#clean-shutdown-support-via-synthetic-power-button)
-    - [Contributors](#contributors-10)
+    - [Contributors](#contributors-12)
 - [v0.12.0](#v0120)
    - [ARM64 enhancements](#arm64-enhancements)
    - [Removal of `vhost-user-net` and `vhost-user-block` self spawning](#removal-of-vhost-user-net-and-vhost-user-block-self-spawning)
    - [Migration of `vhost-user-fs` backend](#migration-of-vhost-user-fs-backend)
    - [Enhanced "info" API](#enhanced-info-api)
-    - [Contributors](#contributors-11)
+    - [Contributors](#contributors-13)
 - [v0.11.0](#v0110)
    - [`io_uring` support by default for `virtio-block`](#io_uring-support-by-default-for-virtio-block)
    - [Windows Guest Support](#windows-guest-support)
@@ -111,15 +128,15 @@
    - [Default Log Level Changed](#default-log-level-changed)
    - [New `--balloon` Parameter Added](#new---balloon-parameter-added)
    - [Experimental `virtio-watchdog` Support](#experimental-virtio-watchdog-support)
-    - [Notable Bug Fixes](#notable-bug-fixes-8)
-    - [Contributors](#contributors-12)
+    - [Notable Bug Fixes](#notable-bug-fixes-10)
+    - [Contributors](#contributors-14)
 - [v0.10.0](#v0100)
    - [`virtio-block` Support for Multiple Descriptors](#virtio-block-support-for-multiple-descriptors)
    - [Memory Zones](#memory-zones)
    - [`Seccomp` Sandbox Improvements](#seccomp-sandbox-improvements)
    - [Preliminary KVM HyperV Emulation Control](#preliminary-kvm-hyperv-emulation-control)
-    - [Notable Bug Fixes](#notable-bug-fixes-9)
-    - [Contributors](#contributors-13)
+    - [Notable Bug Fixes](#notable-bug-fixes-11)
+    - [Contributors](#contributors-15)
 - [v0.9.0](#v090)
    - [`io_uring` Based Block Device Support](#io_uring-based-block-device-support)
    - [Block and Network Device Statistics](#block-and-network-device-statistics)
@@ -132,17 +149,17 @@
    - [Enhancements to ARM64 Support](#enhancements-to-arm64-support)
    - [Intel SGX Support](#intel-sgx-support)
    - [`Seccomp` Sandbox Improvements](#seccomp-sandbox-improvements-1)
-    - [Notable Bug Fixes](#notable-bug-fixes-10)
-    - [Contributors](#contributors-14)
+    - [Notable Bug Fixes](#notable-bug-fixes-12)
+    - [Contributors](#contributors-16)
 - [v0.8.0](#v080)
    - [Experimental Snapshot and Restore Support](#experimental-snapshot-and-restore-support)
    - [Experimental ARM64 Support](#experimental-arm64-support)
    - [Support for Using 5-level Paging in Guests](#support-for-using-5-level-paging-in-guests)
    - [Virtio Device Interrupt Suppression for Network Devices](#virtio-device-interrupt-suppression-for-network-devices)
    - [`vhost_user_fs` Improvements](#vhost_user_fs-improvements)
-    - [Notable Bug Fixes](#notable-bug-fixes-11)
+    - [Notable Bug Fixes](#notable-bug-fixes-13)
    - [Command Line and API Changes](#command-line-and-api-changes)
-    - [Contributors](#contributors-15)
+    - [Contributors](#contributors-17)
 - [v0.7.0](#v070)
    - [Block, Network, Persistent Memory (PMEM), VirtioFS and Vsock hotplug](#block-network-persistent-memory-pmem-virtiofs-and-vsock-hotplug)
    - [Alternative `libc` Support](#alternative-libc-support)
@@ -152,14 +169,14 @@
    - [`Seccomp` Sandboxing](#seccomp-sandboxing)
    - [Updated Distribution Support](#updated-distribution-support)
    - [Command Line and API Changes](#command-line-and-api-changes-1)
-    - [Contributors](#contributors-16)
+    - [Contributors](#contributors-18)
 - [v0.6.0](#v060)
    - [Directly Assigned Devices Hotplug](#directly-assigned-devices-hotplug)
    - [Shared Filesystem Improvements](#shared-filesystem-improvements)
    - [Block and Networking IO Self Offloading](#block-and-networking-io-self-offloading)
    - [Command Line Interface](#command-line-interface)
    - [PVH Boot](#pvh-boot)
-    - [Contributors](#contributors-17)
+    - [Contributors](#contributors-19)
 - [v0.5.1](#v051)
 - [v0.5.0](#v050)
    - [Virtual Machine Dynamic Resizing](#virtual-machine-dynamic-resizing)
@@ -167,7 +184,7 @@
    - [New Interrupt Management Framework](#new-interrupt-management-framework)
    - [Development Tools](#development-tools)
    - [Kata Containers Integration](#kata-containers-integration)
-    - [Contributors](#contributors-18)
+    - [Contributors](#contributors-20)
 - [v0.4.0](#v040)
    - [Dynamic virtual CPUs addition](#dynamic-virtual-cpus-addition)
    - [Programmatic firmware tables generation](#programmatic-firmware-tables-generation)
@@ -176,7 +193,7 @@
    - [Userspace IOAPIC by default](#userspace-ioapic-by-default)
    - [PCI BAR reprogramming](#pci-bar-reprogramming)
    - [New `cloud-hypervisor` organization](#new-cloud-hypervisor-organization)
-    - [Contributors](#contributors-19)
+    - [Contributors](#contributors-21)
 - [v0.3.0](#v030)
    - [Block device offloading](#block-device-offloading)
    - [Network device backend](#network-device-backend)
@@ -203,6 +220,140 @@
    - [Unit testing](#unit-testing)
    - [Integration tests parallelization](#integration-tests-parallelization)

+# v25.0
+
+This release has been tracked through the [v25.0
+project](https://github.com/cloud-hypervisor/cloud-hypervisor/projects/29).
+
+### `ch-remote` Improvements
+
+The `ch-remote` command has gained support for creating the VM from a JSON
+config and support for booting and deleting the VM from the VMM.
+
+### VM "Coredump" Support
+
+Under the `guest_debug` feature flag it is now possible to extract the memory
+of the guest for use in debugging with e.g. the `crash` utility. (#4012)
+
+### Notable Bug Fixes
+
+* Always restore console mode on exit (#4249, #4248)
+* Restore vCPUs in numerical order which fixes aarch64 snapshot/restore (#4244)
+* Don't try and configure `IFF_RUNNING` on TAP devices (#4279)
+* Propagate configured queue size through to vhost-user backend (#4286)
+* Always Program vCPU CPUID before running the vCPU to fix running on Linux
+  5.16 (#4156)
+* Enable ACPI MADT "Online Capable" flag for hotpluggable vCPUs to fix newer
+  Linux guest
+
+### Removals
+
+The following functionality has been removed:
+
+* The `mergeable` option from the `virtio-pmem` support has been removed
+  (#3968)
+* The `dax` option from the `virtio-fs` support has been removed (#3889)
+
+### Contributors
+
+Many thanks to everyone who has contributed to our release:
+
+* Dylan Bargatze <dbargatz@users.noreply.github.com>
+* Jinank Jain <jinankjain@microsoft.com>
+* Michael Zhao <michael.zhao@arm.com>
+* Rob Bradford <robert.bradford@intel.com>
+* Sebastien Boeuf <sebastien.boeuf@intel.com>
+* Wei Liu <liuwe@microsoft.com>
+* Yi Wang <wang.yi59@zte.com.cn>
+
+# v24.0
+
+This release has been tracked through the [v24.0
+project](https://github.com/cloud-hypervisor/cloud-hypervisor/projects/28).
+
+### Bypass Mode for `virtio-iommu`
+
+`virtio-iommu` specification describes how a device can be attached by default
+to a bypass domain. This feature is particularly helpful for booting a VM with
+guest software which doesn't support `virtio-iommu` but still need to access
+the device. Now that Cloud Hypervisor supports this feature, it can boot a VM
+with Rust Hypervisor Firmware or OVMF even if the `virtio-block` device exposing
+the disk image is placed behind a virtual IOMMU.
+
+### Ensure Identifiers Uniqueness
+
+Multiple checks have been added to the code to prevent devices with identical
+identifiers from being created, and therefore avoid unexpected behaviors at boot
+or whenever a device was hot plugged into the VM.
+
+### Sparse Mmap support
+
+Sparse mmap support has been added to both VFIO and vfio-user devices. This
+allows the device regions that are not fully mappable to be partially mapped.
+And the more a device region can be mapped into the guest address space, the
+fewer VM exits will be generated when this device is accessed. This directly
+impacts the performance related to this device.
+
+### Expose Platform Serial Number
+
+A new `serial_number` option has been added to `--platform`, allowing a user to
+set a specific serial number for the platform. This number is exposed to the
+guest through the SMBIOS.
+
+### Notable Bug Fixes
+
+* Fix loading RAW firmware (#4072)
+* Reject compressed QCOW images (#4055)
+* Reject virtio-mem resize if device is not activated (#4003)
+* Fix potential mmap leaks from VFIO/vfio-user MMIO regions (#4069)
+* Fix algorithm finding HOB memory resources (#3983)
+
+### Notable Improvements
+
+* Refactor interrupt handling (#4083)
+* Load kernel asynchronously (#4022)
+* Only create ACPI memory manager DSDT when resizable (#4013)
+
+### Deprecations
+
+Deprecated features will be removed in a subsequent release and users should
+plan to use alternatives
+
+* The `mergeable` option from the `virtio-pmem` support has been deprecated
+  (#3968)
+* The `dax` option from the `virtio-fs` support has been deprecated (#3889)
+
+### New on the Website
+
+A new blog post [Achieving Bare Metal Performance Within a Virtual
+Machine](https://www.cloudhypervisor.org/blog/achieving-bare-metal-performance-within-a-virtual-machine)
+has been added to the Cloud Hypervisor website.
+
+### Contributors
+
+Many thanks to everyone who has contributed to our release:
+
+* Anatol Belski <anbelski@linux.microsoft.com>
+* Bo Chen <chen.bo@intel.com>
+* Fabiano Fidêncio <fabiano.fidencio@intel.com>
+* LiHui <andrewli@kubesphere.io>
+* Maksym Pavlenko <pavlenko.maksym@gmail.com>
+* Rob Bradford <robert.bradford@intel.com>
+* Sebastien Boeuf <sebastien.boeuf@intel.com>
+* Steven Dake <steven.dake@gmail.com>
+* Vincent Batts <vbatts@hashbangbash.com>
+* Wei Liu <liuwe@microsoft.com>
+
+# v23.1
+
+This is a bug fix release. The following issues have been addressed:
+
+* Add some missing seccomp rules
+* Remove `virtio-fs` filesystem entries from config on removal
+* Do not delete API socket on API server start (#4026)
+* Reject `virtio-mem` resize if the guest doesn't activate the device
+* Fix OpenAPI naming of I/O throttling knobs
+
 # v23.0

 This release has been tracked through the [v23.0
--- a/resources/Dockerfile
+++ b/resources/Dockerfile
@@ -4,7 +4,7 @@
 FROM ubuntu:20.04 as dev

 ARG TARGETARCH
-ARG RUST_TOOLCHAIN="1.59.0"
+ARG RUST_TOOLCHAIN="1.62.0"
 ARG CLH_SRC_DIR="/cloud-hypervisor"
 ARG CLH_BUILD_DIR="$CLH_SRC_DIR/build"
 ARG CARGO_REGISTRY_DIR="$CLH_BUILD_DIR/cargo_registry"
--- a/rpm/cloud-hypervisor.spec
+++ b/rpm/cloud-hypervisor.spec
@@ -1,25 +1,32 @@
-# This spec file assumes you're building on an environment where:
-# * You have access to the internet during the build
-# * You have rustup installed on your system
-# * You have both x86_64-unknown-linux-gnu and  x86_64-unknown-linux-musl
-#   targets installed.
-
+# If this flag is set to 1, rustup installation needs to exist on the system and
+# <arch>-unknown-linux-gnu target is required.
+# If this flag is set to 0, distro specific Rust packages will be pulled into the build environment.
 %define using_rustup 1
+# If this flag is set to 1, <arch>-unknown-linux-musl target is required.
 %define using_musl_libc 1
+# If this flag is set to 1, the vendored crates archive and cargo.toml need to be prepared and
+# offline build is implied. Attached script update_src can be used for the vendorization.
+# If this flag is set to 0, access to the internet is required during the build.
+%define using_vendored_crates 0

 Name:           cloud-hypervisor
 Summary:        Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) that runs on top of KVM.
-Version:        23.0
+Version:        25.0
 Release:        0%{?dist}
 License:        ASL 2.0 or BSD-3-clause
 Group:          Applications/System
 Source0:        https://github.com/cloud-hypervisor/cloud-hypervisor/archive/v%{version}.tar.gz
-ExclusiveArch:  x86_64
+%if 0%{?using_vendored_crates}
+Source1:        vendor.tar.gz
+Source2:        config.toml
+%endif
+ExclusiveArch:  x86_64 aarch64

 BuildRequires:  gcc
 BuildRequires:  glibc-devel
 BuildRequires:  binutils
 BuildRequires:  git
+BuildRequires:  openssl-devel

 %if ! 0%{?using_rustup}
 BuildRequires:  rust
@@ -31,29 +38,51 @@ Requires: glibc
 Requires: libgcc
 Requires: libcap
 
+%ifarch x86_64
+%define rust_def_target x86_64-unknown-linux-gnu
+%if 0%{?using_musl_libc}
+%define rust_musl_target x86_64-unknown-linux-musl
+%endif
+%endif
+%ifarch aarch64
+%define rust_def_target aarch64-unknown-linux-gnu
+%if 0%{?using_musl_libc}
+%define rust_musl_target aarch64-unknown-linux-musl
+%endif
+%endif
+
+%if 0%{?using_vendored_crates}
+%define cargo_offline --offline
+%endif
+
 %description
 Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) that runs on top of KVM. The project focuses on exclusively running modern, cloud workloads, on top of a limited set of hardware architectures and platforms. Cloud workloads refers to those that are usually run by customers inside a cloud provider. For our purposes this means modern Linux* distributions with most I/O handled by paravirtualised devices (i.e. virtio), no requirement for legacy devices and recent CPUs and KVM.

 %prep

 %setup -q
+%if 0%{?using_vendored_crates}
+tar xf %{SOURCE1}
+mkdir -p .cargo
+cp %{SOURCE2} .cargo/
+%endif

 %install
 rm -rf %{buildroot}
 install -d %{buildroot}%{_bindir}
-install -D -m755  ./target/x86_64-unknown-linux-gnu/release/cloud-hypervisor %{buildroot}%{_bindir}
-install -D -m755  ./target/x86_64-unknown-linux-gnu/release/ch-remote %{buildroot}%{_bindir}
+install -D -m755  ./target/%{rust_def_target}/release/cloud-hypervisor %{buildroot}%{_bindir}
+install -D -m755  ./target/%{rust_def_target}/release/ch-remote %{buildroot}%{_bindir}
 install -d %{buildroot}%{_libdir}
 install -d %{buildroot}%{_libdir}/cloud-hypervisor
-install -D -m755 target/x86_64-unknown-linux-gnu/release/vhost_user_block %{buildroot}%{_libdir}/cloud-hypervisor
-install -D -m755 target/x86_64-unknown-linux-gnu/release/vhost_user_net %{buildroot}%{_libdir}/cloud-hypervisor
+install -D -m755 target/%{rust_def_target}/release/vhost_user_block %{buildroot}%{_libdir}/cloud-hypervisor
+install -D -m755 target/%{rust_def_target}/release/vhost_user_net %{buildroot}%{_libdir}/cloud-hypervisor

 %if 0%{?using_musl_libc}
 install -d %{buildroot}%{_libdir}/cloud-hypervisor/static
-install -D -m755 target/x86_64-unknown-linux-musl/release/cloud-hypervisor %{buildroot}%{_libdir}/cloud-hypervisor/static
-install -D -m755 target/x86_64-unknown-linux-musl/release/vhost_user_block %{buildroot}%{_libdir}/cloud-hypervisor/static
-install -D -m755 target/x86_64-unknown-linux-musl/release/vhost_user_net %{buildroot}%{_libdir}/cloud-hypervisor/static
-install -D -m755 target/x86_64-unknown-linux-musl/release/ch-remote %{buildroot}%{_libdir}/cloud-hypervisor/static
+install -D -m755 target/%{rust_musl_target}/release/cloud-hypervisor %{buildroot}%{_libdir}/cloud-hypervisor/static
+install -D -m755 target/%{rust_musl_target}/release/vhost_user_block %{buildroot}%{_libdir}/cloud-hypervisor/static
+install -D -m755 target/%{rust_musl_target}/release/vhost_user_net %{buildroot}%{_libdir}/cloud-hypervisor/static
+install -D -m755 target/%{rust_musl_target}/release/ch-remote %{buildroot}%{_libdir}/cloud-hypervisor/static
 %endif


@@ -74,21 +103,25 @@ fi
 echo ${cargo_version}

 %if 0%{?using_rustup}
-rustup target list --installed | grep x86_64-unknown-linux-gnu
+rustup target list --installed | grep -e "%{rust_def_target}"
 if [[ $? -ne 0 ]]; then
-         echo "Target  x86_64-unknown-linux-gnu not found, please install(#rustup target add x86_64-unknown-linux-gnu). exiting"
+         echo "Target  %{rust_def_target} not found, please install(#rustup target add %{rust_def_target}). exiting"
 fi
 	%if 0%{?using_musl_libc}
-rustup target list --installed | grep x86_64-unknown-linux-musl
+rustup target list --installed | grep -e "%{rust_musl_target}"
 if [[ $? -ne 0 ]]; then
-         echo "Target  x86_64-unknown-linux-musl not found, please install(#rustup target add x86_64-unknown-linux-musl). exiting"
+         echo "Target  %{rust_musl_target} not found, please install(#rustup target add %{rust_musl_target}). exiting"
 fi
 	%endif
 %endif

-cargo build --release --target=x86_64-unknown-linux-gnu --all
+%if 0%{?using_vendored_crates}
+# For vendored build, prepend this so openssl-sys doesn't trigger full OpenSSL build
+export OPENSSL_NO_VENDOR=1
+%endif
+cargo build --release --target=%{rust_def_target} --all %{cargo_offline}
 %if 0%{?using_musl_libc}
-cargo build --release --target=x86_64-unknown-linux-musl --all
+cargo build --release --target=%{rust_musl_target} --all %{cargo_offline}
 %endif


@@ -112,6 +145,18 @@ rm -rf %{buildroot}


 %changelog
+*   Thu Jul 07 2022 Rob Bradford <robert.bradford@intel.com> 25.0-0
+-   Update to 25.0
+
+*   Wed May 25 2022 Sebastien Boeuf <sebastien.boeuf@intel.com> 24.0-0
+-   Update to 24.0
+
+*   Tue May 18 2022 Anatol Belski <anbelski@linux.microsoft.com> - 23.1-0
+-   Update to 23.1
+-   Add support for aarch64 build
+-   Add offline build configuration using vendored crates
+-   Fix dependency for openssl-sys
+
 *   Thu Apr 13 2022 Rob Bradford <robert.bradford@intel.com> 23.0-0
 -   Update to 23.0

--- a/rpm/update_src
+++ b/rpm/update_src
@@ -0,0 +1,36 @@
+#!/bin/bash
+
+set -e
+
+CH_VER=$1
+CH_SPEC_DIR=$(pwd)
+CH_TMP_DIR=$CH_SPEC_DIR/ch_tmp
+CH_SRC_DIR=$CH_SPEC_DIR/SOURCES
+
+if [ -z $CH_VER ]; then
+	echo "Replace sources with the given <version>"
+	echo "Usage: $0 <version>"
+	exit 1
+fi
+
+rm -rf $CH_TMP_DIR
+if [ ! -d $CH_SRC_DIR ]; then
+	mkdir $CH_SRC_DIR
+fi
+rm -f $CH_SRC_DIR/v*.tar.gz $CH_SRC_DIR/config.toml $CH_SRC_DIR/vendor.tar.gz
+
+
+wget https://github.com/cloud-hypervisor/cloud-hypervisor/archive/v${CH_VER}.tar.gz -O $CH_SRC_DIR/v${CH_VER}.tar.gz
+mkdir $CH_TMP_DIR
+tar xf $CH_SRC_DIR/v${CH_VER}.tar.gz -C $CH_TMP_DIR --strip-components=1
+
+
+pushd $CH_TMP_DIR
+
+cargo vendor > $CH_SRC_DIR/config.toml
+tar czvf $CH_SRC_DIR/vendor.tar.gz vendor
+
+popd
+
+rm -rf $CH_TMP_DIR
+
--- a/scripts/dev_cli.sh
+++ b/scripts/dev_cli.sh
@@ -7,7 +7,7 @@
 CLI_NAME="Cloud Hypervisor"

 CTR_IMAGE_TAG="cloudhypervisor/dev"
-CTR_IMAGE_VERSION="20220405-0"
+CTR_IMAGE_VERSION="20220705-0"
 CTR_IMAGE="${CTR_IMAGE_TAG}:${CTR_IMAGE_VERSION}"

 DOCKER_RUNTIME="docker"
@@ -226,6 +226,11 @@ cmd_build() {
        } ;;
        "--debug") { build="debug"; } ;;
        "--release") { build="release"; } ;;
+        "--runtime") 
+	    shift
+	    DOCKER_RUNTIME="$1"
+	    export DOCKER_RUNTIME
+	    ;;
        "--libc")
            shift
            [[ "$1" =~ ^(musl|gnu)$ ]] ||
--- a/scripts/run_integration_tests_aarch64.sh
+++ b/scripts/run_integration_tests_aarch64.sh
@@ -192,6 +192,15 @@ update_workloads() {
    fi
    popd

+    # Download Cloud Hypervisor binary from its last stable release
+    LAST_RELEASE_VERSION="v23.0"
+    CH_RELEASE_URL="https://github.com/cloud-hypervisor/cloud-hypervisor/releases/download/$LAST_RELEASE_VERSION/cloud-hypervisor-static-aarch64"
+    CH_RELEASE_NAME="cloud-hypervisor-static-aarch64"
+    pushd $WORKLOADS_DIR
+    time wget --quiet $CH_RELEASE_URL -O "$CH_RELEASE_NAME" || exit 1
+    chmod +x $CH_RELEASE_NAME
+    popd
+
    # Build custom kernel for guest VMs
    build_custom_linux

--- a/scripts/run_integration_tests_live_migration.sh
+++ b/scripts/run_integration_tests_live_migration.sh
@@ -45,6 +45,15 @@ if [ $? -ne 0 ]; then
 fi
 popd

+# Download Cloud Hypervisor binary from its last stable release
+LAST_RELEASE_VERSION="v23.0"
+CH_RELEASE_URL="https://github.com/cloud-hypervisor/cloud-hypervisor/releases/download/$LAST_RELEASE_VERSION/cloud-hypervisor-static"
+CH_RELEASE_NAME="cloud-hypervisor-static"
+pushd $WORKLOADS_DIR
+time wget --quiet $CH_RELEASE_URL -O "$CH_RELEASE_NAME" || exit 1
+chmod +x $CH_RELEASE_NAME
+popd
+
 # Build custom kernel based on virtio-pmem and virtio-fs upstream patches
 VMLINUX_IMAGE="$WORKLOADS_DIR/vmlinux"

--- a/scripts/run_metrics.sh
+++ b/scripts/run_metrics.sh
@@ -113,6 +113,9 @@ if [ -n "$test_filter" ]; then
    test_binary_args+=("--test-filter $test_filter")
 fi

+# Ensure that git commands can be run in this directory (for metrics report)
+git config --global --add safe.directory $PWD
+
 export RUST_BACKTRACE=1
 time target/$BUILD_TARGET/release/performance-metrics ${test_binary_args[*]}
 RES=$?
--- a/scripts/run_unit_tests.sh
+++ b/scripts/run_unit_tests.sh
@@ -11,6 +11,8 @@ cargo_args=("")
 if [[ $hypervisor = "mshv" ]]; then
    cargo_args+=("--no-default-features")
    cargo_args+=("--features common,$hypervisor")
+elif [[ $(uname -m) = "x86_64" ]]; then
+    cargo_args+=("--features tdx")
 fi

 if [[ "${BUILD_TARGET}" == "aarch64-unknown-linux-musl" ]]; then
--- a/src/bin/ch-remote.rs
+++ b/src/bin/ch-remote.rs
@@ -12,6 +12,7 @@ use api_client::Error as ApiClientError;
 use clap::{Arg, ArgMatches, Command};
 use option_parser::{ByteSized, ByteSizedParseError};
 use std::fmt;
+use std::io::Read;
 use std::os::unix::net::UnixStream;
 use std::process;

@@ -31,6 +32,8 @@ enum Error {
    AddVdpaConfig(vmm::config::Error),
    AddVsockConfig(vmm::config::Error),
    Restore(vmm::config::Error),
+    ReadingStdin(std::io::Error),
+    ReadingFile(std::io::Error),
 }

 impl fmt::Display for Error {
@@ -51,6 +54,8 @@ impl fmt::Display for Error {
            AddVdpaConfig(e) => write!(f, "Error parsing vDPA device syntax: {}", e),
            AddVsockConfig(e) => write!(f, "Error parsing vsock syntax: {}", e),
            Restore(e) => write!(f, "Error parsing restore syntax: {}", e),
+            ReadingStdin(e) => write!(f, "Error reading from stdin: {}", e),
+            ReadingFile(e) => write!(f, "Error reading from file: {}", e),
        }
    }
 }
@@ -264,6 +269,20 @@ fn restore_api_command(socket: &mut UnixStream, config: &str) -> Result<(), Erro
    .map_err(Error::ApiClient)
 }

+fn coredump_api_command(socket: &mut UnixStream, destination_url: &str) -> Result<(), Error> {
+    let coredump_config = vmm::api::VmCoredumpData {
+        destination_url: String::from(destination_url),
+    };
+
+    simple_api_command(
+        socket,
+        "PUT",
+        "coredump",
+        Some(&serde_json::to_string(&coredump_config).unwrap()),
+    )
+    .map_err(Error::ApiClient)
+}
+
 fn receive_migration_api_command(socket: &mut UnixStream, url: &str) -> Result<(), Error> {
    let receive_migration_data = vmm::api::VmReceiveMigrationData {
        receiver_url: url.to_owned(),
@@ -295,6 +314,19 @@ fn send_migration_api_command(
    .map_err(Error::ApiClient)
 }

+fn create_api_command(socket: &mut UnixStream, path: &str) -> Result<(), Error> {
+    let mut data = String::default();
+    if path == "-" {
+        std::io::stdin()
+            .read_to_string(&mut data)
+            .map_err(Error::ReadingStdin)?;
+    } else {
+        data = std::fs::read_to_string(path).map_err(Error::ReadingFile)?;
+    }
+
+    simple_api_command(socket, "PUT", "create", Some(&data)).map_err(Error::ApiClient)
+}
+
 fn do_command(matches: &ArgMatches) -> Result<(), Error> {
    let mut socket =
        UnixStream::connect(matches.value_of("api-socket").unwrap()).map_err(Error::Connect)?;
@@ -422,6 +454,14 @@ fn do_command(matches: &ArgMatches) -> Result<(), Error> {
                .value_of("restore_config")
                .unwrap(),
        ),
+        Some("coredump") => coredump_api_command(
+            &mut socket,
+            matches
+                .subcommand_matches("coredump")
+                .unwrap()
+                .value_of("coredump_config")
+                .unwrap(),
+        ),
        Some("send-migration") => send_migration_api_command(
            &mut socket,
            matches
@@ -442,6 +482,14 @@ fn do_command(matches: &ArgMatches) -> Result<(), Error> {
                .value_of("receive_migration_config")
                .unwrap(),
        ),
+        Some("create") => create_api_command(
+            &mut socket,
+            matches
+                .subcommand_matches("create")
+                .unwrap()
+                .value_of("path")
+                .unwrap(),
+        ),
        Some(c) => simple_api_command(&mut socket, "PUT", c, None).map_err(Error::ApiClient),
        None => unreachable!(),
    }
@@ -576,6 +624,8 @@ fn main() {
                ),
        )
        .subcommand(Command::new("resume").about("Resume the VM"))
+        .subcommand(Command::new("boot").about("Boot a created VM"))
+        .subcommand(Command::new("delete").about("Delete a VM"))
        .subcommand(Command::new("shutdown").about("Shutdown the VM"))
        .subcommand(
            Command::new("snapshot")
@@ -595,6 +645,11 @@ fn main() {
                        .help(vmm::config::RestoreConfig::SYNTAX),
                ),
        )
+        .subcommand(
+            Command::new("coredump")
+                .about("Create a coredump from VM")
+                .arg(Arg::new("coredump_config").index(1).help("<file_path>")),
+        )
        .subcommand(
            Command::new("send-migration")
                .about("Initiate a VM migration")
@@ -617,6 +672,11 @@ fn main() {
                        .index(1)
                        .help("<receiver_url>"),
                ),
+        )
+        .subcommand(
+            Command::new("create")
+                .about("Create VM from a JSON configuration")
+                .arg(Arg::new("path").index(1).default_value("-")),
        );

    let matches = app.get_matches();
--- a/src/main.rs
+++ b/src/main.rs
@@ -23,6 +23,7 @@ use thiserror::Error;
 use vmm::config;
 use vmm_sys_util::eventfd::EventFd;
 use vmm_sys_util::signal::block_signal;
+use vmm_sys_util::terminal::Terminal;

 #[derive(Error, Debug)]
 enum Error {
@@ -161,7 +162,7 @@ fn create_app<'a>(
            Arg::new("platform")
                .long("platform")
                .help(
-                    "num_pci_segments=<num pci segments>,iommu_segments=<list_of_segments>",
+                    "num_pci_segments=<num pci segments>,iommu_segments=<list_of_segments>,serial_number=<(DMI) device serial number>",
                )
                .takes_value(true)
                .group("vm-config"),
@@ -623,6 +624,13 @@ fn main() {
        }
    };

+    let on_tty = unsafe { libc::isatty(libc::STDIN_FILENO as i32) } != 0;
+    if on_tty {
+        // Don't forget to set the terminal in canonical mode
+        // before to exit.
+        std::io::stdin().lock().set_canon_mode().unwrap();
+    }
+
    std::process::exit(exit_code);
 }

@@ -1323,40 +1331,6 @@ mod unit_tests {
                }"#,
                false,
            ),
-            #[cfg(target_arch = "x86_64")]
-            (
-                vec![
-                    "cloud-hypervisor",
-                    "--kernel",
-                    "/path/to/kernel",
-                    "--pmem",
-                    "file=/path/to/img/1,size=1G,mergeable=on",
-                ],
-                r#"{
-                    "kernel": {"path": "/path/to/kernel"},
-                    "pmem": [
-                        {"file": "/path/to/img/1", "size": 1073741824, "mergeable": true}
-                    ]
-                }"#,
-                true,
-            ),
-            #[cfg(target_arch = "x86_64")]
-            (
-                vec![
-                    "cloud-hypervisor",
-                    "--kernel",
-                    "/path/to/kernel",
-                    "--pmem",
-                    "file=/path/to/img/1,size=1G,mergeable=off",
-                ],
-                r#"{
-                    "kernel": {"path": "/path/to/kernel"},
-                    "pmem": [
-                        {"file": "/path/to/img/1", "size": 1073741824, "mergeable": false}
-                    ]
-                }"#,
-                true,
-            ),
        ]
        .iter()
        .for_each(|(cli, openapi, equal)| {
--- a/test_infra/Cargo.toml
+++ b/test_infra/Cargo.toml
@@ -7,8 +7,8 @@ edition = "2021"
 [dependencies]
 dirs = "4.0.0"
 epoll = "4.3.1"
-lazy_static = "1.4.0"
-libc = "0.2.123"
+libc = "0.2.126"
+once_cell = "1.13.0"
 ssh2 = { version = "0.9.1", features = ["vendored-openssl"]}
 vmm-sys-util = "0.9.0"
 wait-timeout = "0.2.0"
--- a/test_infra/src/lib.rs
+++ b/test_infra/src/lib.rs
@@ -3,12 +3,11 @@
 // SPDX-License-Identifier: Apache-2.0
 //

-#[macro_use]
-extern crate lazy_static;
-
+use once_cell::sync::Lazy;
 use ssh2::Session;
 use std::env;
 use std::ffi::OsStr;
+use std::fmt::Debug;
 use std::fs;
 use std::io;
 use std::io::{Read, Write};
@@ -51,7 +50,7 @@ pub struct GuestNetworkConfig {

 pub const DEFAULT_TCP_LISTENER_MESSAGE: &str = "booted";
 pub const DEFAULT_TCP_LISTENER_PORT: u16 = 8000;
-pub const DEFAULT_TCP_LISTENER_TIMEOUT: i32 = 80;
+pub const DEFAULT_TCP_LISTENER_TIMEOUT: i32 = 120;

 #[derive(Debug)]
 pub enum WaitForBootError {
@@ -721,9 +720,7 @@ pub fn exec_host_command_output(command: &str) -> Output {

 pub const PIPE_SIZE: i32 = 32 << 20;

-lazy_static! {
-    static ref NEXT_VM_ID: Mutex<u8> = Mutex::new(1);
-}
+static NEXT_VM_ID: Lazy<Mutex<u8>> = Lazy::new(|| Mutex::new(1));

 pub struct Guest {
    pub tmp_dir: TempDir,
@@ -831,30 +828,12 @@ impl Guest {
        )
    }

-    pub fn api_create_body(
-        &self,
-        cpu_count: u8,
-        _fw_path: &str,
-        _kernel_path: &str,
-        _kernel_cmd: &str,
-    ) -> String {
-        #[cfg(all(target_arch = "x86_64", not(feature = "mshv")))]
-        format! {"{{\"cpus\":{{\"boot_vcpus\":{},\"max_vcpus\":{}}},\"kernel\":{{\"path\":\"{}\"}},\"cmdline\":{{\"args\": \"\"}},\"net\":[{{\"ip\":\"{}\", \"mask\":\"255.255.255.0\", \"mac\":\"{}\"}}], \"disks\":[{{\"path\":\"{}\"}}, {{\"path\":\"{}\"}}]}}",
-                 cpu_count,
-                 cpu_count,
-                 _fw_path,
-                 self.network.host_ip,
-                 self.network.guest_mac,
-                 self.disk_config.disk(DiskType::OperatingSystem).unwrap().as_str(),
-                 self.disk_config.disk(DiskType::CloudInit).unwrap().as_str(),
-        }
-
-        #[cfg(any(target_arch = "aarch64", feature = "mshv"))]
+    pub fn api_create_body(&self, cpu_count: u8, kernel_path: &str, kernel_cmd: &str) -> String {
        format! {"{{\"cpus\":{{\"boot_vcpus\":{},\"max_vcpus\":{}}},\"kernel\":{{\"path\":\"{}\"}},\"cmdline\":{{\"args\": \"{}\"}},\"net\":[{{\"ip\":\"{}\", \"mask\":\"255.255.255.0\", \"mac\":\"{}\"}}], \"disks\":[{{\"path\":\"{}\"}}, {{\"path\":\"{}\"}}]}}",
                 cpu_count,
                 cpu_count,
-                 _kernel_path,
-                 _kernel_cmd,
+                 kernel_path,
+                 kernel_cmd,
                 self.network.host_ip,
                 self.network.guest_mac,
                 self.disk_config.disk(DiskType::OperatingSystem).unwrap().as_str(),
@@ -984,13 +963,6 @@ impl Guest {
        Ok(())
    }

-    pub fn get_entropy(&self) -> Result<u32, Error> {
-        self.ssh_command("cat /proc/sys/kernel/random/entropy_avail")?
-            .trim()
-            .parse()
-            .map_err(Error::Parsing)
-    }
-
    pub fn get_pci_bridge_class(&self) -> Result<String, Error> {
        Ok(self
            .ssh_command("cat /sys/bus/pci/devices/0000:00:00.0/class")?
@@ -1036,50 +1008,6 @@ impl Guest {
        Ok(false)
    }

-    pub fn valid_virtio_fs_cache_size(
-        &self,
-        dax: bool,
-        cache_size: Option<u64>,
-    ) -> Result<bool, Error> {
-        // SHM region is called different things depending on kernel
-        let shm_region = self
-            .ssh_command("sudo grep 'virtio[0-9]\\|virtio-pci-shm' /proc/iomem || true")?
-            .trim()
-            .to_string();
-
-        if shm_region.is_empty() {
-            return Ok(!dax);
-        }
-
-        // From this point, the region is not empty, hence it is an error
-        // if DAX is off.
-        if !dax {
-            return Ok(false);
-        }
-
-        let cache = if let Some(cache) = cache_size {
-            cache
-        } else {
-            // 8Gib by default
-            0x0002_0000_0000
-        };
-
-        let args: Vec<&str> = shm_region.split(':').collect();
-        if args.is_empty() {
-            return Ok(false);
-        }
-
-        let args: Vec<&str> = args[0].trim().split('-').collect();
-        if args.len() != 2 {
-            return Ok(false);
-        }
-
-        let start_addr = u64::from_str_radix(args[0], 16).map_err(Error::Parsing)?;
-        let end_addr = u64::from_str_radix(args[1], 16).map_err(Error::Parsing)?;
-
-        Ok(cache == (end_addr - start_addr + 1))
-    }
-
    pub fn check_vsock(&self, socket: &str) {
        // Listen from guest on vsock CID=3 PORT=16
        // SOCKET-LISTEN:<domain>:<protocol>:<local-address>
@@ -1159,7 +1087,12 @@ impl Guest {
            .unwrap();
    }

-    pub fn check_devices_common(&self, socket: Option<&String>, console_text: Option<&String>) {
+    pub fn check_devices_common(
+        &self,
+        socket: Option<&String>,
+        console_text: Option<&String>,
+        pmem_path: Option<&String>,
+    ) {
        // Check block devices are readable
        self.ssh_command("sudo dd if=/dev/vda of=/dev/null bs=1M iflag=direct count=1024")
            .unwrap();
@@ -1178,6 +1111,63 @@ impl Guest {
            self.ssh_command(&console_cmd).unwrap();
        }
        // The net device is 'automatically' exercised through the above 'ssh' commands
+
+        // Check if the pmem device is usable
+        if let Some(pmem_path) = pmem_path {
+            assert_eq!(
+                self.ssh_command(&format!("ls {}", pmem_path))
+                    .unwrap()
+                    .trim(),
+                pmem_path
+            );
+            assert_eq!(
+                self.ssh_command(&format!("sudo mount {} /mnt", pmem_path))
+                    .unwrap(),
+                ""
+            );
+            assert_eq!(self.ssh_command("ls /mnt").unwrap(), "lost+found\n");
+            self.ssh_command("echo test123 | sudo tee /mnt/test")
+                .unwrap();
+            assert_eq!(self.ssh_command("sudo umount /mnt").unwrap(), "");
+            assert_eq!(self.ssh_command("ls /mnt").unwrap(), "");
+
+            assert_eq!(
+                self.ssh_command(&format!("sudo mount {} /mnt", pmem_path))
+                    .unwrap(),
+                ""
+            );
+            assert_eq!(
+                self.ssh_command("sudo cat /mnt/test || true")
+                    .unwrap()
+                    .trim(),
+                "test123"
+            );
+            self.ssh_command("sudo rm /mnt/test").unwrap();
+            assert_eq!(self.ssh_command("sudo umount /mnt").unwrap(), "");
+        }
+    }
+}
+
+pub enum VerbosityLevel {
+    Warn,
+    Info,
+    Debug,
+}
+
+impl Default for VerbosityLevel {
+    fn default() -> Self {
+        Self::Warn
+    }
+}
+
+impl ToString for VerbosityLevel {
+    fn to_string(&self) -> String {
+        use VerbosityLevel::*;
+        match self {
+            Warn => "".to_string(),
+            Info => "-v".to_string(),
+            Debug => "-vv".to_string(),
+        }
    }
 }

@@ -1186,22 +1176,29 @@ pub struct GuestCommand<'a> {
    guest: &'a Guest,
    capture_output: bool,
    print_cmd: bool,
+    verbosity: VerbosityLevel,
 }

 impl<'a> GuestCommand<'a> {
    pub fn new(guest: &'a Guest) -> Self {
-        Self::new_with_binary_name(guest, "cloud-hypervisor")
+        Self::new_with_binary_path(guest, &clh_command("cloud-hypervisor"))
    }

-    pub fn new_with_binary_name(guest: &'a Guest, binary_name: &str) -> Self {
+    pub fn new_with_binary_path(guest: &'a Guest, binary_path: &str) -> Self {
        Self {
-            command: Command::new(clh_command(binary_name)),
+            command: Command::new(binary_path),
            guest,
            capture_output: false,
            print_cmd: true,
+            verbosity: VerbosityLevel::Info,
        }
    }

+    pub fn verbosity(&mut self, verbosity: VerbosityLevel) -> &mut Self {
+        self.verbosity = verbosity;
+        self
+    }
+
    pub fn capture_output(&mut self) -> &mut Self {
        self.capture_output = true;
        self
@@ -1213,6 +1210,17 @@ impl<'a> GuestCommand<'a> {
    }

    pub fn spawn(&mut self) -> io::Result<Child> {
+        use VerbosityLevel::*;
+        match &self.verbosity {
+            Warn => {}
+            Info => {
+                self.command.arg("-v");
+            }
+            Debug => {
+                self.command.arg("-vv");
+            }
+        };
+
        if self.print_cmd {
            println!(
                "\n\n==== Start cloud-hypervisor command-line ====\n\n\
@@ -1225,7 +1233,6 @@ impl<'a> GuestCommand<'a> {
        if self.capture_output {
            let child = self
                .command
-                .arg("-v")
                .stderr(Stdio::piped())
                .stdout(Stdio::piped())
                .spawn()
@@ -1245,7 +1252,7 @@ impl<'a> GuestCommand<'a> {
                ))
            }
        } else {
-            self.command.arg("-v").spawn()
+            self.command.spawn()
        }
    }

--- a/tests/integration.rs
+++ b/tests/integration.rs
--- a/vfio_user/Cargo.toml
+++ b/vfio_user/Cargo.toml
@@ -5,14 +5,14 @@ authors = ["The Cloud Hypervisor Authors"]
 edition = "2021"

 [dependencies]
-anyhow = "1.0.56"
-libc = "0.2.123"
-log = "0.4.16"
+anyhow = "1.0.58"
+libc = "0.2.126"
+log = "0.4.17"
 serde = {version = ">=1.0.27", features = ["rc"] }
 serde_derive = ">=1.0.27"
 serde_json = ">=1.0.9"
-thiserror = "1.0.30"
-vm-memory = { version = "0.7.0", features = ["backend-mmap", "backend-atomic"] }
+thiserror = "1.0.31"
+vm-memory = { version = "0.8.0", features = ["backend-mmap", "backend-atomic"] }
 vmm-sys-util = ">=0.3.1"

 [dependencies.vfio-bindings]
--- a/vfio_user/src/lib.rs
+++ b/vfio_user/src/lib.rs
@@ -4,7 +4,9 @@
 //

 use std::ffi::CString;
+use std::fs::File;
 use std::io::{IoSlice, Read, Write};
+use std::mem::size_of;
 use std::num::Wrapping;
 use std::os::unix::net::UnixStream;
 use std::os::unix::prelude::RawFd;
@@ -49,7 +51,7 @@ impl Default for Command {

 #[allow(dead_code)]
 #[repr(u32)]
-#[derive(Clone, Copy, Debug, PartialEq)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
 enum HeaderFlags {
    Command = 0,
    Reply = 1,
@@ -234,6 +236,7 @@ pub struct Region {
    pub index: u32,
    pub size: u64,
    pub file_offset: Option<FileOffset>,
+    pub sparse_areas: Vec<vfio_region_sparse_mmap_area>,
 }

 #[derive(Debug)]
@@ -294,7 +297,7 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::Version,
                flags: HeaderFlags::Command as u32,
-                message_size: (std::mem::size_of::<Version>() + version_data.len() + 1) as u32,
+                message_size: (size_of::<Version>() + version_data.len() + 1) as u32,
                ..Default::default()
            },
            major: 0,
@@ -330,7 +333,7 @@ impl Client {

        let mut server_version_data = Vec::new();
        server_version_data.resize(
-            server_version.header.message_size as usize - std::mem::size_of::<Version>(),
+            server_version.header.message_size as usize - size_of::<Version>(),
            0,
        );
        self.stream
@@ -361,10 +364,10 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::DmaMap,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<DmaMap>() as u32,
+                message_size: size_of::<DmaMap>() as u32,
                ..Default::default()
            },
-            argsz: (std::mem::size_of::<DmaMap>() - std::mem::size_of::<Header>()) as u32,
+            argsz: (size_of::<DmaMap>() - size_of::<Header>()) as u32,
            flags: DmaMapFlags::ReadWrite,
            offset,
            address,
@@ -391,10 +394,10 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::DmaUnmap,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<DmaUnmap>() as u32,
+                message_size: size_of::<DmaUnmap>() as u32,
                ..Default::default()
            },
-            argsz: (std::mem::size_of::<DmaUnmap>() - std::mem::size_of::<Header>()) as u32,
+            argsz: (size_of::<DmaUnmap>() - size_of::<Header>()) as u32,
            flags: 0,
            address,
            size,
@@ -420,7 +423,7 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::DeviceReset,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<DeviceReset>() as u32,
+                message_size: size_of::<DeviceReset>() as u32,
                ..Default::default()
            },
        };
@@ -445,10 +448,10 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::DeviceGetInfo,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<DeviceGetInfo>() as u32,
+                message_size: size_of::<DeviceGetInfo>() as u32,
                ..Default::default()
            },
-            argsz: std::mem::size_of::<DeviceGetInfo>() as u32,
+            argsz: size_of::<DeviceGetInfo>() as u32,
            ..Default::default()
        };
        debug!("Command: {:?}", get_info);
@@ -474,20 +477,62 @@ impl Client {
        let num_regions = reply.num_regions;
        let mut regions = Vec::new();
        for index in 0..num_regions {
-            let get_region_info = DeviceGetRegionInfo {
-                header: Header {
-                    message_id: self.next_message_id.0,
-                    command: Command::DeviceGetRegionInfo,
-                    flags: HeaderFlags::Command as u32,
-                    message_size: std::mem::size_of::<DeviceGetRegionInfo>() as u32,
-                    ..Default::default()
-                },
-                region_info: vfio_region_info {
-                    argsz: 1024, // Arbitrary max size
-                    index,
-                    ..Default::default()
-                },
-            };
+            let (region_info, fd, sparse_areas) = self.get_region_info(index)?;
+            regions.push(Region {
+                flags: region_info.flags,
+                index: region_info.index,
+                size: region_info.size,
+                file_offset: fd.map(|fd| FileOffset::new(fd, region_info.offset)),
+                sparse_areas,
+            });
+        }
+
+        Ok(regions)
+    }
+
+    fn get_region_info(
+        &mut self,
+        index: u32,
+    ) -> Result<
+        (
+            vfio_region_info,
+            Option<File>,
+            Vec<vfio_region_sparse_mmap_area>,
+        ),
+        Error,
+    > {
+        // Retrieve the region info without capability
+        let mut get_region_info = DeviceGetRegionInfo {
+            header: Header {
+                message_id: self.next_message_id.0,
+                command: Command::DeviceGetRegionInfo,
+                flags: HeaderFlags::Command as u32,
+                message_size: std::mem::size_of::<DeviceGetRegionInfo>() as u32,
+                ..Default::default()
+            },
+            region_info: vfio_region_info {
+                argsz: size_of::<vfio_region_info>() as u32,
+                index,
+                ..Default::default()
+            },
+        };
+        debug!("Command: {:?}", get_region_info);
+        self.next_message_id += Wrapping(1);
+
+        self.stream
+            .write_all(get_region_info.as_slice())
+            .map_err(Error::StreamWrite)?;
+
+        let mut reply = DeviceGetRegionInfo::default();
+        let (_, fd) = self
+            .stream
+            .recv_with_fd(reply.as_mut_slice())
+            .map_err(Error::ReceiveWithFd)?;
+        debug!("Reply: {:?}", reply);
+
+        // Retrieve the region info again with capabilities if needed
+        if reply.region_info.argsz > std::mem::size_of::<vfio_region_info>() as u32 {
+            get_region_info.region_info.argsz = reply.region_info.argsz;
            debug!("Command: {:?}", get_region_info);
            self.next_message_id += Wrapping(1);

@@ -502,24 +547,94 @@ impl Client {
                .map_err(Error::ReceiveWithFd)?;
            debug!("Reply: {:?}", reply);

-            regions.push(Region {
-                flags: reply.region_info.flags,
-                index: reply.region_info.index,
-                size: reply.region_info.size,
-                file_offset: fd.map(|fd| FileOffset::new(fd, reply.region_info.offset)),
-            });
-
-            // TODO: Handle region with capabilities
-            let mut _cap_data = Vec::with_capacity(
-                reply.header.message_size as usize - std::mem::size_of::<DeviceGetRegionInfo>(),
+            let cap_size = reply.region_info.argsz - std::mem::size_of::<vfio_region_info>() as u32;
+            assert_eq!(
+                cap_size,
+                reply.header.message_size - size_of::<DeviceGetRegionInfo>() as u32
            );
-            _cap_data.resize(_cap_data.capacity(), 0u8);
+            let mut cap_data = Vec::with_capacity(cap_size as usize);
+            cap_data.resize(cap_data.capacity(), 0u8);
            self.stream
-                .read_exact(_cap_data.as_mut_slice())
+                .read_exact(cap_data.as_mut_slice())
                .map_err(Error::StreamRead)?;
+
+            let sparse_areas = Self::parse_region_caps(&cap_data, &reply.region_info)?;
+
+            Ok((reply.region_info, fd, sparse_areas))
+        } else {
+            Ok((reply.region_info, fd, Vec::new()))
+        }
+    }
+
+    fn parse_region_caps(
+        cap_data: &[u8],
+        region_info: &vfio_region_info,
+    ) -> Result<Vec<vfio_region_sparse_mmap_area>, Error> {
+        let mut sparse_areas: Vec<vfio_region_sparse_mmap_area> = Vec::new();
+
+        let cap_size = cap_data.len() as u32;
+        let cap_header_size = size_of::<vfio_info_cap_header>() as u32;
+        let mmap_cap_size = size_of::<vfio_region_info_cap_sparse_mmap>() as u32;
+        let mmap_area_size = size_of::<vfio_region_sparse_mmap_area>() as u32;
+
+        let cap_data_ptr = cap_data.as_ptr() as *const u8;
+        let mut region_info_offset = region_info.cap_offset;
+        while region_info_offset != 0 {
+            // calculate the offset from the begining of the cap_data based on the offset
+            // that is relative to the begining of the VFIO region info structure
+            let cap_offset = region_info_offset - size_of::<vfio_region_info>() as u32;
+            if cap_offset + cap_header_size > cap_size {
+                warn!(
+                    "Unexpected end of cap data: 'cap_offset + cap_header_size > cap_size' \
+                cap_offset = {}, cap_header_size = {}, cap_size = {}",
+                    cap_offset, cap_header_size, cap_size
+                );
+                break;
+            }
+
+            // Safe because the `cap_data_ptr` is valid and the `cap_offset` is checked above
+            let cap_ptr = unsafe { cap_data_ptr.offset(cap_offset as isize) };
+            let cap_header = unsafe { &*(cap_ptr as *const vfio_info_cap_header) };
+            match cap_header.id as u32 {
+                VFIO_REGION_INFO_CAP_SPARSE_MMAP => {
+                    if cap_offset + mmap_cap_size > cap_size {
+                        warn!(
+                            "Unexpected end of cap data: 'cap_offset + mmap_cap_size > cap_size' \
+                        cap_offset = {}, mmap_cap_size = {}, cap_size = {}",
+                            cap_offset, mmap_cap_size, cap_size
+                        );
+                        break;
+                    }
+                    // Safe because the `cap_ptr` is valid and its size is also checked above
+                    let sparse_mmap = unsafe {
+                        &*(cap_ptr as *mut u8 as *const vfio_region_info_cap_sparse_mmap)
+                    };
+
+                    let area_num = sparse_mmap.nr_areas;
+                    if cap_offset + mmap_cap_size + area_num * mmap_area_size > cap_size {
+                        warn!("Unexpected end of cap data: 'cap_offset + mmap_cap_size + area_num * mmap_area_size > cap_size' \
+                        cap_offset = {}, mmap_cap_size = {}, area_num = {}, mmap_area_size = {}, cap_size = {}",
+                        cap_offset, mmap_cap_size, area_num, mmap_area_size, cap_size);
+                        break;
+                    }
+                    // Safe because the `sparse_mmap` is valid and its size is also checked above
+                    let areas =
+                        unsafe { sparse_mmap.areas.as_slice(sparse_mmap.nr_areas as usize) };
+                    for area in areas.iter() {
+                        sparse_areas.push(*area);
+                    }
+                }
+                _ => {
+                    warn!(
+                        "Ignoring unsupported vfio region capability (id = '{}')",
+                        cap_header.id
+                    );
+                }
+            }
+            region_info_offset = cap_header.next;
        }

-        Ok(regions)
+        Ok(sparse_areas)
    }

    pub fn region_read(&mut self, region: u32, offset: u64, data: &mut [u8]) -> Result<(), Error> {
@@ -528,7 +643,7 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::RegionRead,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<RegionAccess>() as u32,
+                message_size: size_of::<RegionAccess>() as u32,
                ..Default::default()
            },
            offset,
@@ -556,7 +671,7 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::RegionWrite,
                flags: HeaderFlags::Command as u32,
-                message_size: (std::mem::size_of::<RegionAccess>() + data.len()) as u32,
+                message_size: (size_of::<RegionAccess>() + data.len()) as u32,
                ..Default::default()
            },
            offset,
@@ -588,10 +703,10 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::GetIrqInfo,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<GetIrqInfo>() as u32,
+                message_size: size_of::<GetIrqInfo>() as u32,
                ..Default::default()
            },
-            argsz: (std::mem::size_of::<GetIrqInfo>() - std::mem::size_of::<Header>()) as u32,
+            argsz: (size_of::<GetIrqInfo>() - size_of::<Header>()) as u32,
            flags: 0,
            index,
            count: 0,
@@ -629,10 +744,10 @@ impl Client {
                message_id: self.next_message_id.0,
                command: Command::SetIrqs,
                flags: HeaderFlags::Command as u32,
-                message_size: std::mem::size_of::<SetIrqs>() as u32,
+                message_size: size_of::<SetIrqs>() as u32,
                ..Default::default()
            },
-            argsz: (std::mem::size_of::<SetIrqs>() - std::mem::size_of::<Header>()) as u32,
+            argsz: (size_of::<SetIrqs>() - size_of::<Header>()) as u32,
            flags,
            start,
            index,
--- a/vhdx/Cargo.toml
+++ b/vhdx/Cargo.toml
@@ -8,9 +8,9 @@ license = "Apache-2.0"
 [dependencies]
 byteorder = "1.4.3"
 crc32c = "0.6.3"
-libc = "0.2.123"
-log = "0.4.16"
-remain = "0.2.2"
+libc = "0.2.126"
+log = "0.4.17"
+remain = "0.2.3"
 thiserror = "1.0"
-uuid = { version = "0.8.2", features = ["v4"] }
+uuid = { version = "1.1.2", features = ["v4"] }
 vmm-sys-util = ">=0.3.1"
--- a/Show More
+++ b/Show More