This is a typo here, `interrupt-controller` attribute of each CPU node
should not have a `#` prepended.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Replace the use of a reference kernel configuration file from this
repository with the use of a defconfig from the linux fork.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The IMSIC attr of RISC-V AIA is wrongly configured to start from 0, which
would error out with `os error 22` (invalid argument).
```console
Error booting VM: VmBoot(DeviceManager(CreateInterruptController(CreateAia(CreateVaia(Vaia error SetDeviceAttribute(SetDeviceAttribute(Invalid argument (os error 22))))))))
```
`riscv_imsic_attr_of` should shift `cpu_index` by 1 here to produce
correct IMSIC attr.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
For more control over updating the guest kernel use a fixed tag name
rather than fetching the latest.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Currently, Cloud Hypervisor does not set a VIRTIO_IOMMU_F_INPUT_RANGE
feature bit for the VirtIO IOMMU device, which, according to spec[1],
means that the guest may use the whole 64-bit address space is for
IOMMU purposes:
>If the feature is not offered, virtual mappings span over the whole
>64-bit address space (start = 0, end = 0xffffffff ffffffff)
As far as I am aware, there are currently no host platforms on
the market capable of addressing the whole 64-bit address space.
For example, I am currently working with a host platform that reports
39-bit address space for IOMMU purposes:
>DMAR: Host address width 39
When running a VFIO pass-through guest on such a platform, NVIDIA
driver in guest gets DMA mapping failures when working with large data,
and this results in Cloud Hypervisor exiting with the following error:
>cloud-hypervisor: 1501.220535s: <__iommu>
>ERROR:virtio-devices/src/thread_helper.rs:53 -- Error running worker:
>HandleEvent(Failed to process request queue : ExternalMapping(Custom
>{ kind: Other, error: "failed to map memory for VFIO container, iova
>0x7fff00000000, gpa 0x24ce25000, size 0x1000: IommuDmaMap(Error(22))"
>}))
Passing "--platform iommu_address_width=39" to Cloud Hypervisor built
with this change fixes this.
[1]: https://docs.oasis-open.org/virtio/virtio/v1.3/csd01/
virtio-v1.3-csd01.html#x1-5420006
Signed-off-by: Nikolay Edigaryev <edigaryev@gmail.com>
When VM restore fails, the VMM state is left with some side-effects,
such as a VM being created. It would prevent the VMM from creating and
booting a new VM or restoring from a VM snapshot.
To fix this issue, this patch explicitly handles the side effects to the
VMM state when VM restore fails, e.g. clear the VmConfig and shutdown
the VM being created.
Fixes: #6869
Signed-off-by: Bo Chen <bo.arvin.chen@gmail.com>
With VM restore, the VMM is always re-creating a VM based on the
restored `VmConfig`. We should always re-generate the 'console_info'
from the `Vmm` struct to stay consistent with the new VM being created.
Signed-off-by: Bo Chen <bo.arvin.chen@gmail.com>
Instead of reinventing this mock infrastructure in the upcoming fuzzer,
reuse the one that is already available.
However this change makes Clippy complain that TestBackend and
TestContext don't implement Default. This is just test code, we can
suppress Clippy in this case.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Updating the kernel to v6.12 has shown up a flaw in the workflow for our
binary kernel releases. The CI job that builds the binary kernel in the
cloud-hypervisor/linux repository fetches the config from the main
branch of the cloud-hypervisor/cloud-hypervisor repository. However the
CI job to update the kernel version to use is in the cloud-hypervisor
repository.
As a workaround - update the kernel config and version in the
cloud-hypervisor repository to point to v6.12 and use the ability to
build the kernel during the CI run. Once merged to main a new release
can be made in the linux respository which will build a binary asset
using the new config. After that release the CI jobs on the
cloud-hypervisor repository can changed back to using the binary kernel
assets.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Remove an erroneous optimisation that used the page size mask to reduce
the range to iterate through on the set of mappings. This doesn't work
as the virtio-iommu ranges are larger than a single page. This may have
worked in the past when the mappings were limited to a single page.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
No change to the Dockerfile but I observed that the 20251022-0 image was
not available in the repository.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
MSHV's SEV-SNP implementation calls ioeventfds whenever there is an
event.
This change removes the need frequent allocation and deallocation of a
vector, while at the same time makes sure other call sites are
unaffected.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This avoids ambiguity of parameters:
error: ambiguous reference to positional arguments by number in a tuple variant; change this to a named argument
--> block/src/qcow/mod.rs:48:48
|
48 | #[error("File larger than max of {}: {0}", MAX_QCOW_FILE_SIZE)]
| ^^^^^^^^^^^^^^^^^^
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This will become useful when we build the fuzzing target for the
instruction emulator, because there is no need to pull in the rest of
the hypervisor crate in that situation.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The fastfmt feature and VEX support use techniques that appear to leak
memory in the eye of LLVM's address sanitizer.
While at it, disable a bunch of instruction set decoding support we
never intend to support.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The size was set to one because without VIRTIO_BLK_F_SEG_MAX, the guest
only used one data descriptor per request.
The value 32 is empirically derived from booting a guest. This value
eliminates all SmallVec allocations observable by DHAT.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This allows the guest to put in more than one segment per request. It
can improve the throughput of the system.
Introduce a new check to make sure the queue size configured by the user
is large enough to hold at least one segment.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
When the main fuzzer function returns (), it is equivalent to
returning Corpus::Keep.
In some of the return paths, we want to reject the input so that the
libfuzzer won't spend more time mutating them.
The should make fuzzing more efficient. No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The checksum field in the original buffer should be zeroed.
The code was zeroing a temporary buffer. That's wrong.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The original code was buggy. It always attempted to update the header,
even when the file was opened as read-only. That led to an error.
The specification states that the headers should be updated when the
first user visible write happens. We can just drop the incorrect code.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The ASYNC flag forces requests to go to worker threads. Worker threads
are expensive. Let the kernel decide what to do.
With this change, I no longer see an excessive amount of io_uring worker
threads.
Quote from the manual for io_uring_sqe_set_flags(3):
```
IOSQE_ASYNC
Normal operation for io_uring is to try and issue an sqe
as non-blocking first, and if that fails, execute it in an
async manner. To support more efficient overlapped
operation of requests that the application knows/assumes
will always (or most of the time) block, the application
can ask for an sqe to be issued async from the start. Note
that this flag immediately causes the SQE to be offloaded
to an async helper thread with no initial non-blocking
attempt. This may be less efficient and should not be
used liberally or without understanding the performance
and efficiency tradeoffs.
```
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Instead of silently ignoring the error, return an error to the callers.
This in practice should never happen, because the submission queue size
(ring depth) is the same as the virtio queue size. Virtio queue won't
push more requests than there are submission queue entries.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The original code relied on the default `read_vectored` or
`write_vectored` implementations from the standard library.
The default implementation of those functions only uses the first
non-empty buffer. That's not correct when there are more than one
buffers.
Fixes: #6876
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This system is erroring out on jobs due to insufficient memory - reduce
parallelism to allow CI jobs to complete.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Updated the live migration documentation to include instructions for
performing cross-host live migrations over TCP connections.
Signed-off-by: Jinrong Liang <cloudliang@tencent.com>
Add support for cross-host live migration over TCP, which
significantly improves performance in cross-host live migration
scenarios compared to the Unix socket forwarding method.
Signed-off-by: Jinrong Liang <cloudliang@tencent.com>
Bump vm-memory from 0.16.0 to 0.16.1 to include the implementations of
ReadVolatile and WriteVolatile for TcpStream.
Signed-off-by: Jinrong Liang <cloudliang@tencent.com>
While non-Intel CPU architectures don't have a special concept of IO
address space, support for PCI I/O regions is still needed to be able
to handle PCI devices that use them.
With this change, I'm able to pass through an e1000e device from QEMU
to a cloud-hypervisor VM on aarch64 and use it in the cloud-hypervisor
guest. Previously, it would hit the unimplemented!().
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Add a bitmap to MshvVM struct for caching the pages
that the VMM got shared access from the guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Pass memory size from vmm crate to hypervisor VM
creation API so use for creating Bitmap for SEV-SNP
guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
For SEV-SNP VM on MSHV we need to request page access during
IO, we want to avoid such request for the page that have already
been requested. In order to maintain the bitmap we need the memory size
during bitmap creation.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
VMM needs to handle VMG exit for guest request. This patch
removes the old method that uses gpa_read/write(IOCTL and hypercall),
which is expensive and update the GHCB page using
mapped(root partition) struct.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
VMM needs to handle VMG exit for MMIO. This patch
removes the old method that uses gpa_read/write(IOCTL and hypercall),
which is expensive and update the GHCB page using
mapped(root partition) struct.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
VMM needs to handle VMG exit for IO Port. This patch
removes the old method that uses gpa_read/write(IOCTL and hypercall),
which is expensive and update the GHCB page using
mapped(root partition) struct.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
VMM needs to handle VMG exit for doorbell page. This patch
removes the old method that uses gpa_read/write(IOCTL and hypercall),
which is expensive and update the GHCB page using
mapped(root partition) struct.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
After handling the VMG exit vmm needs to clear the exitinfo1
into the GHCB page. This patch replaces the old
method(gpa_write) and clear the exitinfo1 using mapped GHCB struct.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
For confidential VM on MSHV, GHCB page is the communication
method between guest and host. All the CVM exits, VMM
needs to read and write to the GHCB page. MSHV provides
an option to remap the page to the root partition. This
way VMM could directly read and write to the page and
skip extra IOCTL and hypercall. This improvement makes
the IO 10% faster.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
TPM support on RISC-V is not scheduled in this stage, we will come back
when it's ready and we have workloads to verify it on RISC-V.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Currently `devices` module cannot be solely built, by specifying
`arch/kvm` to turn on the features required for its dependency - `arch`
crate to build. Thus enabling `devices` crate to be built and tested
with command:
```sh
cargo build -p devices --features kvm
```
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`arch` module are required for devices module to build. Enabling `arch`
module in target specific dependencies section.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Provide implementation for GSI allocator to work on riscv64
architecture, and doc comment for riscv64 as well.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Currently `vm-allocator` module cannot be solely built, by add
`features` section and specifying `arch/kvm` to turn on the features
required for its dependency - `arch` module to build. Thus enabling
`vm-allocator` crate to be built and tested with command:
```sh
cargo build -p vm-allocator --features kvm
```
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`arch` module are required to provide definitions for riscv64 system irq
and memroy allocation, enabling `arch` module in target specific
dependencies section.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Integrate fdt setup and layout for `riscv64` to `arch` crate, provide
definitions of `riscv64` platform specific error and reuse
`MmioDeviceInfo`, `PciSpaceInfo` structures and `DeviceInfoForFdt` impl
block for `riscv64`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Reused layout set for `aarch64` as much as possible to provide a concise
and compatible (for devices) layout for RISC-V 64-bit.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`fdt_parser` and `vm-fdt` crates are required to setup fdt used to boot
riscv64 virtual machines, enabling the two crates in target specific
dependencies section.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
It turns out we need to setup `a0`, `pc` and `a1` for all vcpus before
we run them, remove predicates used to set `pc` and `a1` for `vcpu0`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Previous `Vaia` implementation uses types as it is, thus the property
string generated for fdt setup requires additional type conversion.
Change the types used in the methods of `Vaia` trait to provide a
concise fdt setup process.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
The rate-limiter worker was moved to use small Azure VMs (#6731) and now
requires more time to complete.
Increasing its timeout to stablize this worker.
Signed-off-by: Bo Chen <bo.arvin.chen@gmail.com>
With 0.5.0 release of `rust-hypervisor-firmware`, `aarch64` binary were
added to assets, which causes the `FW_URL` to have multiple download url
separated by a white space, thus our integration tests would fail.
Constrain `FW_URL` to `hypervisor-fw` to resolve this.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
The previous docs were very developer centric and have led several
people to believe that cross-machine migration is not supported at
all.
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
I've added newlines between paragraphs and code blocks for easier
reading. I've also changed the code blocks to use the correct
highlighting.
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
Replace `map_or()` on false condition with `is_some_and` to provide
better readability, as suggestted by v1.84.0-beta.1 `cargo clippy`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Adapt the existing code to transparently the MemorySlotAllocator. The
MemoryManager is the canonical holder of the these values with them
turned into a MemoryAllocator on demand.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Add an allocator for KVM memory slots, a finite resource in the kernel
- these need to be manipulated across different crates with a common
dependency on this crate.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
`prepare_linux` is capable of determining whether we need to invoke
`build_custom_linux` for building linux from source or `download_linux`
for downloading pre-built.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`prepare_linux` checks if a `--build-guest-kernel` option is present,
and build kernel from `cloud-hypervisor/linux.git`. Otherwise, it will
invoke `download_linux` to use pre-built kernel.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
If any VM argument (e.g. --disk) is provided require some payload (e.g.
--kernel or --firmware) when parsing the command line arguments.
See: #6831
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Add unit-test to make sure get_regs and set_regs on riscv64 architecture
work as expected, effectively avoiding typos in register names.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Complement `create_standard_regs` implementation on RISC-V platform to
work with `From` trait of `kvm_riscv_core`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Incorporates riscv64 register interaction and AIA creation to kvm
module. Complete `Vcpu` trait on RISC-V platform.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Integrate `aia` module into `riscv64` module, and enable `riscv64`
module if target architecture is RISC-V 64-bit.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`fuzz` is a separate workspace, enable consistency check on rust-vmm
crates in `fuzz` to keep stuffs in sync with root workspace.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
`get_device_attr` in 0.19.0 kvm-ioctls is marked as unsafe, wrap
invokation of `get_device_attr` with `unsafe` block.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
- Bump kvm-bindings from 0.9.1 to 0.10.0
- Bump kvm-ioctls from 0.18.0 to 0.19.0
- Bump vm-memory from 0.15.0 to 0.16.0
- Bump linux-loader from 0.12.0 to 0.13.0
- Bump virtio-bindings from 0.2.1 to 0.2.4
- Bump virtio-queue from 0.13.0 to 0.14.0
- Pin mshv-bindings to 0.3.1
- Pin mshv-ioctls to 0.3.1
- Pin vhost to rev "d983ae0"
- Pin vhost-user-backend to rev "d983ae0"
Since vhost 0.12.0 and vhost-user-backend 0.16.0 are going to be yanked,
temporarily pin these two to "d983ae0", which are expected to be
replaced by 0.13.0 vhost and 0.17.0 vhost-user-backend after released.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Add `package-consistency-check.py` script to prevent #6809 and #6815
from happening. This script takes a string present in the repository
field of packages to identify pacakges from a specific source.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
This reverts commit b264aebcde.
Pulls in new vm-memory so should be done as part of a global bump of
Rust-VMM crates.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
warning: the following explicit lifetimes could be elided: 'a
--> hypervisor/src/arch/x86/emulator/mod.rs:492:6
|
492 | impl<'a, T: CpuStateManager> Emulator<'a, T> {
| ^^ ^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
= note: `#[warn(clippy::needless_lifetimes)]` on by default
help: elide the lifetimes
|
492 - impl<'a, T: CpuStateManager> Emulator<'a, T> {
492 + impl<T: CpuStateManager> Emulator<'_, T> {
|
warning: the following explicit lifetimes could be elided: 'a
--> hypervisor/src/mshv/x86_64/emulator.rs:19:6
|
19 | impl<'a> MshvEmulatorContext<'a> {
| ^^ ^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
help: elide the lifetimes
|
19 - impl<'a> MshvEmulatorContext<'a> {
19 + impl MshvEmulatorContext<'_> {
|
warning: the following explicit lifetimes could be elided: 'a
--> hypervisor/src/mshv/x86_64/emulator.rs:65:6
|
65 | impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
| ^^ ^^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_lifetimes
help: elide the lifetimes
|
65 - impl<'a> PlatformEmulator for MshvEmulatorContext<'a> {
65 + impl PlatformEmulator for MshvEmulatorContext<'_> {
|
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
--> test_infra/src/lib.rs:1307:25
|
1307 | let child = self
| _________________________^
1308 | | .command
1309 | | .stderr(Stdio::piped())
1310 | | .stdout(Stdio::piped())
1311 | | .spawn()
1312 | | .unwrap();
| |_________________________^
|
= note: consider calling `.wait()`
= note: not doing so might leave behind zombie processes
= note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zombie_processes
= note: `#[warn(clippy::zombie_processes)]` on by default
The API caller should ensure that they call .wait() or equivalent on the
spawned child to reap it.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The snapshot/restore test didn't wait on the child being spawned:
warning: spawned process is never `wait()`ed on
--> performance-metrics/src/performance_tests.rs:495:25
|
495 | let mut child = GuestCommand::new(&guest)
| _________________________^
496 | | .args(["--api-socket", &api_socket_source])
497 | | .args([
498 | | "--cpus",
... |
507 | | .spawn()
508 | | .unwrap();
| |_____________________^
|
= note: consider calling `.wait()`
= note: not doing so might leave behind zombie processes
= note: see https://doc.rust-lang.org/stable/std/process/struct.Child.html#warning
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#zombie_processes
= note: `#[warn(clippy::zombie_processes)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
We know what we are doing within `tracer` crate, disable lint on these
shared reference to mutable static.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Functions marked as `pub` in test module need to be documented. Since
these are literally helper functions and there is no need to be `pub`,
remove these `pub` keywords.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
As clippy of rust-toolchain version 1.83.0-beta.1 suggests, remove
redundant `return` statement to keep code clean.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
As clippy of rust-toolchain version 1.83.0-beta.1 suggests, use `c""` to
construct nul-terminated `CStr`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
As clippy of rust-toolchain version 1.83.0-beta.1 suggests, remove
manual implementation of `is_power_of_two` to improve readability.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
As clippy of rust-toolchain version 1.83.0-beta.1 suggests, replace
manually implemented `div_round_up!` and the like with `div_ceil` from
std.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
This system has a lot of cores (80) resulting in all the tests being
spawned simultaneously and leading to exhaustion of the available
memory. Instead limit the number of threads.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
After updating the OS image to the latest jammy version this test now
requires more memory to run
Fixes: #6782
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When running with the newer jammy OS image error messages from Rust
Hypervisor Firmware about lack of ram when rebooting where observed.
Increase the RAM allocation to allow it to boot after a reboot.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Currently `arch` crate cannot be built, by specifying `hypervisor/kvm`
to turn on the features required for its dependency - `hypervisor` crate
to build. Thus enabling `arch` crate to be built with command:
```sh
cargo build -p arch --features kvm
```
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
AddressManager::move_bar() acquires the device_tree mutex.
The function is called from PciConfigIo::config_space_write()/
PciConfigMmio::config_space_write() while the pci_bus mutex
is acquired.
The functions DeviceManager::pci_resources()/eject_device()
acquire these mutexes in reverse order, which leads to a deadlock.
Fixes: #6775
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
This lint disallows asserttions on is_ok()/is_err() in favor of either
using unwrap (so that at least if the test fails, we the failure message
will contain the actual failure reason instead of just "was not
ok/err"), or actually matching the specific variant.
Inspired by and quoted from @roypat.
Enable this lint for `build.yaml` and `quality.yaml`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Asserting on .is_ok()/.is_err() leads to hard to debug failures (as if
the test fails, it will only say "assertion failed: false". We replace
these with `.unwrap()`, which also prints the exact error variant that
was unexpectedly encountered (we can to this these days thanks to
efforts to implement Display and Debug for our error types). If the
assert!((...).is_ok()) was followed by an .unwrap() anyway, we just drop
the assert.
Inspired by and quoted from @roypat.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
This is based on a revert of commit
ce49a6f4b8 with some modifications for a
different worker configuration.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Only download the kernel binaries from the github release if the remote
file is newer (avoids multiple copies accumulating in the download
directory.)
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Cargo's features are additive. Disabling default features in individual
packages but not on the workspace level makes no sense.
This fixes the several build warnings.
Fixes: 5a70d7ec69 (build: Centralize rust-vmm crates to workspace)
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Since cloning Option<Arc<T>> will clone for Arc<T>, this patch fixes the
follow warning:
warning: this call to `as_ref.map(...)` does nothing
--> vmm/src/lib.rs:872:13
|
872 | self.console_resize_pipe.as_ref().map(Arc::clone),
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.console_resize_pipe.clone()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
= note: `#[warn(clippy::useless_asref)]` on by default
Signed-off-by: Songqian Li <sionli@tencent.com>
This patch removes pub import vm_config in config.rs to eliminate
the ambiguity of vm_comfig reference.
Signed-off-by: Songqian Li <sionli@tencent.com>
By introducing `imports_granularity="Module"` format strategy,
effectively groups imports from the same module into one line or block,
improving maintainability and readability.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Enforcing group_imports="StdExternalCrate" requires using cargo fmt from
the nightly toolchain. Create a new workflow that runs on nightly to run
cargo fmt.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Historically the Cloud Hypervisor coding style has been to ensure that
all imports are ordered and placed in a single group. Unfortunately
cargo fmt has no support for ensuring that all imports are in a single
group so if whitespace lines were added as part of the import statements
then they would only be odered correctly in the group.
By adopting "group_imports="StdExternalCrate" we can enforce a style
where imports are placed in at most three groups for std, external
crates and the crate itself. Choosing a style enforceable by the tooling
reduces the reviewer burden.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Serial device doesnt support resize semantics. Setting up the
console resize pipe in the Serial device setup path, overwrites
the setup done as part of virtio-console.
Signed-off-by: BharatNarasimman <bharatn@microsoft.com>
This patch removes locks in VmCreate request and VmInfo response
since we needn't use a lock here and should ensure that internal
implementation is transparent to the runtime.
Signed-off-by: Songqian Li <sionli@tencent.com>
Killing process with SIGKILL will miss the information since CLH process
needs to end normally to export code coverage information.
Signed-off-by: Songqian Li <sionli@tencent.com>
Add release and target params to `cargo test` since we collect
the code coverage reports from `xx/$BUILD_TARGET/release/`.
Signed-off-by: Songqian Li <sionli@tencent.com>
The construction of `FilePair` in `virtio_devices` component has changed
in 287887c, wrapping the parameters with `Arc` to fix fuzz build.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Modify `Cargo.toml` in each member crate to follow the dependencies
specified in root `Cargo.toml` file.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
For a VM with virt-console enabled, when a reboot is requested, the
console devices are closed during the shutdown path. As part of this
the sigwinch listener process and the console resizer pipe are closed.
For the new incarnation of the VM, fresh set of console devices are
setup and a new console resizer pipe is created. The new VM should
be setup to use the newly created console devices including the console
resizer pipe.
Reading from the older console resizer pipe results in unexpected eof
error and terminates the cloud hypervisor process.
Signed-off-by: BharatNarasimman <bharatn@microsoft.com>
Rebooting a VM fails with the following error when debug assertions
are enabled:
fatal runtime error: IO Safety violation: owned file descriptor already closed
This happens because FromRawFd::from_raw_fd is used on RawFds stored
in ConsoleInfo every time a VM begins to boot, so the second
time (after a reboot, or if the first attempt to boot via the API
failed), the fd will be closed. Until this assertion is hit, the code
is operating on either closed file descriptors, or new file
descriptors for something completely different. If debug assertions
are disabled, it will just continue doing this with unpredictable
results.
To fix this, and prevent the problem reocurring, ownership of the
console file descriptors needs to be properly tracked, using Rust's
type system, so this commit refactors the console code to do that.
The file descriptors are now passed around with reference counts, so
they won't be closed prematurely. The obvious way to do this would be
to just have each member of ConsoleInfo be an Arc<File>, but we need
to accomodate that serial console file descriptors can also be
sockets. We can't just store an OwnedFd and convert it when it's
used, because we only get a reference from the Arc, so we need to
store the descriptors as their concrete types in an enum. Since this
basically duplicates the ConsoleOutputMode enum from the config, the
ConsoleOutputMode enum is now not used past constructing the
ConsoleInfo.
So that ownership can be represented consistently, the debug console's
tty mode now uses its own stdout descriptor.
I'm still using .try_clone().unwrap() (i.e. dup()) to clone file
descriptors for Endpoint::FilePair and Endpoint::TtyPair, because I
assume there's a reason for them not just to hold a single file
descriptor.
I've also retained the existing behaviour of having serial manager
ignore the tty file descriptor passed to it (which is stdout), and
instead using stdin. It looks a lot weirder now, because it has to
explicitly indicate it's ignoring the fd with an underscore binding.
Fixes: 52eebaf6 ("vmm: refactor DeviceManager to use console_info")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
The assignment of console_resize_pipe in the TTY case seems to have
been accidentally deleted. I've put it back, but since this is adding
code, I used the new safe API for checking whether a file is a
terminal, introduced in Rust 1.70.0. We should probably use that
everywhere, but that's out of scope of this bug fix.
Fixes: 52eebaf6 ("vmm: refactor DeviceManager to use console_info")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
I've moved this so that it's just after the enum definition, which
will hopefully make it less easy to miss if events are added/removed
again in future.
Fixes: 6d1077fc ("vmm: Unix socket backend for serial port")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Complete the removal of the DAX support by removing the use of
non-standard messages. These messages have since been removed from the
vhost_user crate (rust-vmm/vhost#246) and so need to be removed from our
implementation since that would otherwise block updating to a newer
version of the crate.
The ability to enable DAX support in Cloud Hypervisor has been disabled
some time ago but this code was residual with no way to enable it.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
And modify to code to use the updated interfaces.
Arguments for map_guest_memory, get_dirty_bitmap, vp.run(),
import_isolated_pages, modify_gpa_host_access have changed.
Update these to use the new interfaces, including new MSHV_*
definitions, and remove some redundant arguments.
Update seccomp IOCTLs to reflect interface changes.
Fix irq-related definitions naming.
Bump vfio-ioctls to support mshv v0.3.0.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
`GetRegList` variant will be referenced on both Aarch and RISC-V. Fixed
comment to generalize this error variant.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Since RISC-V has its own definition of `CoreRegister`, expand the Aarch
variant to avoid collision of `HypervisorCpuError`.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
The error message of `SetRegister` and `GetRegister` fail to describe
the reason as the error variant suggests. Fixed error message
accordingly.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
The rate-limiter worker now is running on Azure VMs whose performance
are more prone to be fluctuate, particularly on block performances. This
commit relaxes the limit check for group rate limiter tests to make them
less flaky.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Port I/O is only supported on x86_64 - use inverted conditional logic to
match the other architectures rather than calling them out specifically.
This will be relevant when RISC-V support is added.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The steps with predicates of `x86_64` targets would never turn on
`use-cross`, removing them from quality check.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
Bound checks for virtio-mem and ACPI memory hotplug are off by
one and two, respectively. This prevents users to fully use the reserved
memory hotplug size.
For ACPI, if we specific `--memory size=2G,hotplug_size=4G` and run
`ch-remote resize --memory 6G`, cloud-hypervisor will report the
following error because of the incorrect bound check:
`<vmm> ERROR:vmm/src/lib.rs:1631 -- Error when resizing VM:
MemoryManager(InsufficientHotplugRam)`
Similarly, for virtio-mem, cloud-hypervisor will fail the incorrect
bound check and abort the resize. The VM will see the following error
in dmesg:
`virtio_mem virtio3: unknown error, marking device broken: -22`
This patch has fixed both bound checks and ensure that users can
hot add memory up to the reserved hotplug size.
Signed-off-by: Yuhong Zhong <yz@cs.columbia.edu>
Since the underline bare-metal system is going to retire, we are moving
the metrics and rate-limiter workers to use Azure VMs.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Otherwise, you just see output like "Error running command: Server
responded with an error: InternalServerError", which isn't very
helpful. The response body used to be include with the message, but
was removed when the Error enum was converted to thiserror.
Fixes: 5d0d56f5 ("api_client: Use thiserror for errors")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
With cd0cdac ("virtio-devices: Fix seccomp rules for SevSnp guest"), the
sys_ioctl rule that was applied in virtio_thread_common, would override
previously specified sys_ioctl rules for individual thread type. This
causes the SevSnp guest to crash with seccomp violation.
Fixes: cd0cdac ("virtio-devices: Fix seccomp rules for SevSnp guest")
Signed-off-by: Purna Pavan Chandra <paekkaladevi@microsoft.com>
The Linux kernel fork repository for Cloud Hypervisor now produces
prebuilt x86-64 and aarch64 binaries. Speed up the CI by using those
binaries.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
An example warning output is:
error: first doc comment paragraph is too long
--> virtio-devices/src/lib.rs:158:1
|
158 | / /// Convert an absolute address into an address space (GuestMemory)
159 | | /// to a host pointer and verify that the provided size define a valid
160 | | /// range within a single memory region.
161 | | /// Return None if it is out of bounds or if addr+size overlaps a single region.
| |_
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_long_first_doc_paragraph
= note: `-D clippy::too-long-first-doc-paragraph` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::too_long_first_doc_paragraph)]`
Signed-off-by: Bo Chen <chen.bo@intel.com>
In case of SEV-SNP guests on MSHV, any host component including VMM
trying to access any guest memory region, needs to call gain_access API
to acquire access to that particular memory region. This applies to all
the virtqueue buffers as well which the VMM is using to use to perform
DMA into the guest and in order to facilitate device emulation.
While creating various virtqueues we are already using access platform
hook to translate the addresses but currently we are missing the size
arguments which would be required by the SevSnpAccessPlatformProxy to
gain access to the memory of these queues.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This would be used in case of SEV-SNP guest because we need to accquire
access to these virtqueue segments before accessing them.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
DeviceManager::add_virtio_console_device used to create the console
resize pipe and assign it to self.console_resize_pipe, but when this
was changed to use console_info, that was deleted without replacement.
This meant that, even though the console resize pipe was created by
pre_create_console_devices, the DeviceManager never found out about
it, so console resize didn't work (at least for pty consoles).
To fix this, the console resize pipe needs to be passed to the Vm
initializer, which is already supported, it was just previously not
used for new VMs.
Since DeviceManager already stores the console resize pipe in an Arc,
and Vmm also needs a copy of it, the sensible thing to do is change
DeviceManager::new to take Arc, and then we don't need to dup the file
descriptor, which could fail.
Fixes: 52eebaf6 ("vmm: refactor DeviceManager to use console_info")
Signed-off-by: Alyssa Ross <hi@alyssa.is>
When the rate limit was reached it was possible for the notification to
the guest to be lost since the logic to handle the notification was
tightly coupled with processing the queue. The notification would
eventually be triggered when the rate limit pool was refilled but this
could add significant latency.
Address this by refactoring the code to separate processing queue and
signalling - the processing of the queue is suspended when the rate
limit is reached but the signalling will still be attempted if needed
(i.e. VIRTIO_F_EVENT_IDX is still considered.)
Signed-off-by: wuxinyue <wuxinyue.wxy@antgroup.com>
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Previously we didn't handle extended guest requests at all and always
returned an error. This lead to issues with some guests that expected
extended requests to succeed. Instead, handle extended requests like
normal requests and write zeros to the extended area to signal to the
guest that we don't want to supply any additional certificate data.
Signed-off-by: Tom Dohrmann <erbse.13@gmx.de>
In case of ARM64 kvm_regs are considered as StandardRegister which is no
longer required since we have defined architecture independent
StandardRegisters in hypervisor crate.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Use the StandardRegisters defined in the hypervisor crate instead of
re-defining it from MSHV/KVM crate.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This change is along the lines of x86 platform which defined similar
convinence macros to access the StandardRegisters.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
With commit 1e967697c ("vmm: pass AccessPlatform implementation for
SEV-SNP guest"), we started performing one additional ioctl to gain
access to the guest memory before accessing those regions inside
virtio-device emulation code path. This additional ioctl is not part of
the current seccomp filter, which is causing the SevSnp guest to crash
in this scenario with seccomp violation.
Fixes: 1e967697c ("vmm: pass AccessPlatform implementation for SEV-SNP
guest")
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This fixes a issue of running vm compiled in debug with Rust
1.80.0 or later, where this check was introduced.
Signed-off-by: Wenyu Huang <huangwenyuu@outlook.com>
Implement get_guest_debug_hw_bps() for mshv and simply return 0 for now.
This unblocks the usage of the crashdump feature with mshv. If left
unimplemented, Cloud Hypervisor built with mshv and guest_debug features
crashes immediately upon start due to unimplemented!() macro.
Signed-off-by: Anirudh Rayabharam <anrayabh@microsoft.com>
With this we are removing the CloudHypervisor definition of
StandardRegisters instead using an enum which contains different
variants of StandardRegisters coming from their bindigs crate.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Currently we are redefining StandardRegisters instead of using the ones
coming from bindings. With this we can remove the unnecessary
construction of global structure which contains fields from different
hypervisor dependent structs.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
The index is derived from the access offset, so it is controlled by the
guest. Check it before accessing internal data structures.
Since Rust enforces strict bound check even in release builds, the VMM
process will crash if the guest misbehaves. There is no security issue
since the guest can only DoS itself.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Use the IOCTL numbers directly from mshv-ioctls instead of hardcoding
them in the seccomp filters.
Remove seccomp rules for unused ioctls:
MSHV_GET_VERSION_INFO,
MSHV_ASSERT_INTERRUPT.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
CVM guests can configure GHCB page multiple times during it's
lifetime depending on it's requirement. For example a Linux CVM guest
configures a different GHCB page during compressed kernel boot and sets
up a new one after decompressing the kernel. As a cleanup step, VMM
should unset the previous GHCB page before registering a new one for
a particular vcpu thread.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
DeviceFd::get_device_attr should be marked as unsafe, because it
allows writing to an arbitrary address. I have opened a kvm-ioctls
PR[1] to fix this. The hypervisor crate was using the function
unsafely by passing it addresses of immutable variables. I noticed
this because an optimisation change[2] in Rust 1.80.0 caused the
kvm::aarch64::gic::tests::test_get_set_icc_regs test to start failing
when built in release mode.
To fix this, I've broken up the _access functions into _set and _get
variants, with the _get variant using a pointer to a mutable variable.
This has the side effect of making these functions a bit nicer to use,
because the caller now has no need to use references at all, for
either getting or setting.
[1]: https://github.com/rust-vmm/kvm-ioctls/pull/273
[2]: d2d24e395a
Signed-off-by: Alyssa Ross <hi@alyssa.is>
This fixes the vsock::device::tests::test_virtio_device test with Rust
1.80.0 or later, where this check was introduced.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Passing AccessPlatform trait to virtio-device for requesting
restricting page access during IO for SEV-SNP guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Implement AccessPlatform for SEV-SNP guest to access
restricted page using IO. VMM calls MSHV api to get access
of the pages, MSHV requests guest to release the access.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Add a structure to hold the reference of the Vm trait
from Hypervisor crate to access of restricted page
from SEV-SNP guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Pvmemcontrol provides a way for the guest to control its physical memory
properties, and enables optimizations and security features. For
example, the guest can provide information to the host where parts of a
hugepage may be unbacked, or sensitive data may not be swapped out, etc.
Pvmemcontrol allows guests to manipulate its gPTE entries in the SLAT,
and also some other properties of the memory map the back's host memory.
This is achieved by using the KVM_CAP_SYNC_MMU capability. When this
capability is available, the changes in the backing of the memory region
on the host are automatically reflected into the guest. For example, an
mmap() or madvise() that affects the region will be made visible
immediately.
There are two components of the implementation: the guest Linux driver
and Virtual Machine Monitor (VMM) device. A guest-allocated shared
buffer is negotiated per-cpu through a few PCI MMIO registers, the VMM
device assigns a unique command for each per-cpu buffer. The guest
writes its pvmemcontrol request in the per-cpu buffer, then writes the
corresponding command into the command register, calling into the VMM
device to perform the pvmemcontrol request.
The synchronous per-cpu shared buffer approach avoids the kick and busy
waiting that the guest would have to do with virtio virtqueue transport.
The Cloud Hypervisor component can be enabled with --pvmemcontrol.
Co-developed-by: Stanko Novakovic <stanko@google.com>
Co-developed-by: Pasha Tatashin <tatashin@google.com>
Signed-off-by: Yuanchu Xie <yuanchu@google.com>
BusDevice trait functions currently holds a mutable reference to self,
and exclusive access is guaranteed by taking a Mutex when dispatched by
the Bus object. However, this prevents individual devices from serving
accesses that do not require an mutable reference or is better served
with different synchronization primitives. We switch Bus to dispatch via
BusDeviceSync, which holds a shared reference, and delegate locking to
the BusDeviceSync trait implementation for Mutex<BusDevice>.
Other changes are made to make use of the dyn BusDeviceSync
trait object.
Signed-off-by: Yuanchu Xie <yuanchu@google.com>
After moving landlock config to VMConfig, there is no need to start
destination VM with landlock cmdline options in
test_live_migration_with_landlock test.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
There were some scenarios where we are not clearing SW_EXIT_INFO1 to
indicate that there were no error while handling the GHCB exit.
Recently, new Linux guests got stricter with checking the value of
SW_EXIT_INFO1 after coming back from VMGEXIT and started crashing. Fix
this behavior by clearing out SW_EXIT_INFO1 in case of no error.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Support event idx feature for virtio-blk device.
This feature could improve disk IO performance by suppressing
notifications from guest to host and interrupts from host to
guest, which has been already supported in virtio-net and
vhost-user devices.
To achieve this, virtqueue's event-idx-related API is
leveraged for avail_event field update and needs_notification
check.
Fixes: #6580
Signed-off-by: wuxinyue <wuxinyue.wxy@antgroup.com>
HV APIC(i.e., synthetic APIC controller exposed by Microsoft Hypervisor)
does not support one-shot operation using a TSC deadline value. Due to
which we see the following backtrace inside the guest when running with
hypervisor-fw/OVMF:
[ 0.560765] unchecked MSR access error: WRMSR to 0x832 (tried to
write 0x00000000000400ec) at rIP: 0xffffffff8f473594
(native_write_msr+0x4/0x30)
[ 0.560765] Call Trace:
[ 0.560765] ? native_apic_msr_write+0x2b/0x30
[ 0.560765] __setup_APIC_LVTT+0xbc/0xe0
[ 0.560765] lapic_timer_set_oneshot+0x27/0x30
[ 0.560765] clockevents_switch_state+0xaf/0xf0
[ 0.560765] tick_setup_periodic+0x47/0x90
[ 0.560765] tick_setup_device.isra.0+0x7c/0x110
[ 0.560765] tick_check_new_device+0xce/0xf0
[ 0.560765] clockevents_register_device+0x82/0x170
[ 0.560765] clockevents_config_and_register+0x2f/0x40
[ 0.560765] setup_APIC_timer+0xe1/0xf0
[ 0.560765] setup_boot_APIC_clock+0x5f/0x66
[ 0.560765] native_smp_prepare_cpus+0x1d6/0x286
[ 0.560765] kernel_init_freeable+0xcf/0x255
[ 0.560765] ? rest_init+0xb0/0xb0
[ 0.560765] kernel_init+0xe/0x110
[ 0.560765] ret_from_fork+0x22/0x40
Also, if this feature is exposed guest would not finish booting and get
stuck right before unpacking the root filesystem.
Fixes: 06e8d1c40 ("hypervisor: mshv: fix topology for Intel HW on MSHV")
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
This is a preparatory work to make space for ARM64 emulator.
There is no functional change in this commit, just moving code from one
file to another.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
As per VirtIO spec 1.2 section 5.2.6, the `status` field is a byte, not
u32. cloud-hypervisor writes an `u32` to guest memory, which
accidentally zeros out the following 3 bytes, and may corrupt guest OS
internal state.
Signed-off-by: Changyuan Lyu <changyuanl@google.com>
The assertion that only code emulation requires GVA to GPA translation
is wrong.
Allow the caller of `translate` to pass in permission flags directly.
Provide a new method `read_memory_flags` so that we can add the EXECUTE
permission flag where necessary.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
This method will return the existing Response if the status is
successful (Status::Ok) otherwise issue a command to abandon the
migration and return the desired error.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This requires stashing the config values in `struct Vmm`. The configs
should be validated before before creating the VMM thread. Refactor the
code and update documentation where necessary.
The place where the rules are applied remain the same.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Add file/dir paths from landlock-rules arguments to ruleset. Invoke
apply_landlock on VmConfig to apply config specific rules to ruleset.
Once done, any threads spawned by vmm thread will be automatically
sandboxed with the ruleset in vmm thread.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Introduce ApplyLandlock trait and add implementations to VmConfig
elements with PathBufs. This trait adds config specific rules to
landlock ruleset.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Users can use this parameter to pass extra paths that 'vmm' and its
child threads can use at runtime. Hotplug is the primary usecase for
this parameter.
In order to hotplug devices that use local files: disks, memory zones,
pmem devices etc, users can use this option to pass the path/s that will
be used during hotplug while starting cloud-hypervisor. Doing this will
allow landlock to add required rules to grant access to these paths when
cloud-hypervisor process starts.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Users can use this cmdline option to enable/disable Landlock based
sandboxing while running cloud-hypervisor.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
landlock syscalls are required by event_monitor, signal_handler,
http-server and vmm threads. Rest of the threads are spawned by the vmm
thread and they automatically inherit the ruleset from the vmm thread.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
We will start receiving GPA intercepts. For our use cases they are
handled the same way as UNMAPPED GPA intercepts.
Put in some logging to distinguish the two cases.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Previously we required the hypervisor to give us a valid instruction
stream. That worked well enough because we never hit any edge conditions
(such as when the instruction stream crosses page boundary).
Now that MSHV can deal with partial or empty instruction stream, we can
remove that requirement.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Original we checked for R and W, but that code path never got executed.
It is now understood that we can only get here when we execute code. Fix
the permission flags.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The default value of IP is zero. If the decoder's state not set
properly, then the guest state is going to be wrong.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
TIOCGWINSZ modifies its argument, so it needs to mutably borrow it.
Unfortunately, ioctl()'s signature is not able to enforce this, and
the write happens in the kernel, so I don't think anything like miri,
valgrind, UBSan, etc. would have been able to catch this.
The UB passing an immutable reference caused resulted, for me, in
get_win_size() returning (0, 0) since LLVM commit
9a09c737a052 ("[BasicAA] Make isNotCapturedBeforeOrAt() check for
calls more precise (#69931)").
I've had a look through the other ioctl() calls in Cloud Hypervisor,
and I don't think any others have the same problem.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Comparing RAX with RIP makes no logical sense other than RIP happens to
be the correct value. Use `target_rax` instead.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
cargo-cyclonedx rejects the current license key in Cargo.toml, because
it doesn't comply with the SPDX standard:
Package cloud-hypervisor has an invalid license expression (LICENSE-APACHE & LICENSE-BSD-3-Clause), using as named license: Invalid Lax SPDX expression: unknown term
Fix by using the names from the SPDX list:
https://spdx.github.io/license-list-data/
Signed-off-by: Julian Stecklina <julian.stecklina@cyberus-technology.de>
In 42e9632c53 a fix was made to address a
typo in the taplo configuration file. Fixing this typo indicated that
many Cargo.toml files were no longer adhering to the formatting rules.
Fix the formatting by running `taplo fmt`.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Killing CLH by SIGKILL will cause inaccurate code coverage
information. This patch changes the signal to SIGTERM.
Fixes: #6507
Signed-off-by: Songqian Li <sionli@tencent.com>
Since vdpa device does not support pause/resume [1], it does not make
sense to restore on paused state.
[1] 099cdd2af8
Signed-off-by: Bo Chen <chen.bo@intel.com>
Impose a limit on the maximum nesting of file formats that can open more
files. For example, a qcow2 file can have a backing file, which could be
another qcow2 file with a backing file (or even the same file as the
original), potentially causing unbounded recursion.
This commit is based on crosvm implementation:
eb1640e301Fixes: #6472
Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
While checking if the console device is a tty use the cloned fd instead
of libc::STDOUT_FILENO.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Console devices are created after vm_config is received and the created
devices are passed Vm during vm_receive_state.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
During vm_shutdown or vm_snapshot, all the console devices will be
closed. When this happens stdout (FD #2) will also be closed as the
console device using these FD is closed. If the VM were to be started
later, FD#2 can be assigned to a different file. But
pre_create_console_devices looks for FD#2 while opening tty device,
which could point to any file.
To avoid this problem, the STDOUT FD is duplicated when being
assigned to a console device. Even if the console devices were to be
closed, the duplicated FD will be closed and FD#2 will continue to
point to STDOUT.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
While adding console devices, DeviceManager will now use the FDs in
console_info instead of creating them.
To reduce the size of this commit, I marked some variables are unused
with '_' prefix. All those variables are cleaned up in next commit.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Use pre_create_console_devices method to create and populate console
device FDs into console_info in Vmm Object.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
With this change all the information to manage console devices is now
available within Vmm Object.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
Introduce ConsoleInfo struct. This struct will be used to store FDs of
console devices created in pre_create_console_devices and passed to
vm_boot.
Move set_raw_mode, create_pty methods to console_devices.rs to
consolidate console management methods into a single module.
Lastly, copy the logic to create and configure console devices into
pre_create_console_devices method.
Signed-off-by: Praveen K Paladugu <prapal@linux.microsoft.com>
If the KVM version is older than v6.6, KVM_GET_SUPPORTED_CPUID will omit
the L1 cache information in CPUID function 0x8000_0005. Fall back to
the host L1 cache information if it is omitted by KVM.
Signed-off-by: Sean Banko <sbanko@crusoe.ai>
Currently by default each core is allocated it's own socket. Basically
it is n socket 1 core 1 thread/core kind of a structure as witnessed
from within the guest.
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 1
Socket(s): 8
NUMA node(s): 1
This is not a good default topology because resources are distributed
across multiple sockets. For example, a Linux guest with multi socket
configuration will have to calibrate TSC per socket due to which it
might observe a higher amount of boot time than usual.
A better idea for default topology would be 1 socket n core 1
thread/core which ensure better resource locality.
After this change topology would change to:
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 1
Core(s) per socket: 8
Socket(s): 1
NUMA node(s): 1
Fixes: #6497
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Populating these cpuid with default values so that
CLH can patch with topology information. Otherwise it gets
skipped while setting some topology information.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Rather than calling cpuid and then updating the APIC ID field - use the
existing common CPUID data which already includes CPUID data for eax=1
(aka function = 1). This removes the need to call cpuid per vCPU thread
created. This has a positive impact on boot time with multiple vCPUs as
the cpuid instruction is serialising.
Fixes: #5646
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The cloud-hypervisor package does not have a lib target, so it is
invalid. Cargo just ignores that line.
Dropping it removes a warning.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The original code gave an owned fd to UnixListener. That made the same
fd wrapped into two owned files.
When the files were dropped, the same fd would be closed more than once.
A newly introduced check in Rust's stdlib caught that error.
A newly cloned fd should be given to UnixListener.
Fixes: #6485
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Whenever the file descriptor table is full, Linux expands it by doubling
it's size.
The filesystem code that does this uses RCU synchronization to ensure
all pre-existing RCU read-side critical sections have completed. The
latency induced by this synchronization is a big part of the total time
required to restore a snapshot.
The kernel has an optimization in code, where it doesn't call
synchronize_rcu() if there is only one thread in the process. We can
take advantage of this optimization by expanding the descriptor table at
the application start, when it has only one thread.
This commit tries to expand the table to 4096 entries, this way we avoid
any expansion that could take place later.
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
Certain VMEXITs can only happen for x86 guests, thus reduce the scope to
x86_64 at the compilation stage.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
For MSHV we always create frozen partition, so we
resume the VM during boot. Also during pause and resume
VM events we call hypervisor specific API.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Create a partition frozen always, then unfreeze the partition
during boot phase or resume phase. We also freeze the
partition during pause event. Time is freeze during the
time between freeze and unfreeze.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Add Pause/Resume functions for VM trait. For KVM it
will be empty implementations. For MSHV it needs to freeze
and unfreeze the partition.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Currently, the watchdog configuration in systemd is reloaded by
reboot. We can cancel this reboot operation by restarting the
systemd daemon process.
Signed-off-by: Songqian Li <sionli@tencent.com>
tests_snapshot_restore* have been earlier removed from common_parallel
due to the falkiness they add testsuite. Running them sequentially would
eliminate the flakiness. Hence, add the tests back to testsuite but into
common_sequential module.
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
test_snapshot_restore_* tests often have transient failures and add to
overall flakiness of the integration testsuite. Hence, remove them from
common_parallel. However, these tests need to be added back to
common_sequential
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
VM is created with FDs explicitly passed to CH via --net parameter
and snapshotted. New net FDs are passed in turn during restore.
Boilerplate code from _test_snapshot_restore().
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
Add a section about restoring VM with new Net FDs explicitly passed to
ch-remote via 'net_fds' parameter
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
Enable restore command the ability to send file descriptors along with
HTTP request. This is useful when restoring a VM with explicit FDs
passed to NetConfig(s).
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
Consume FDs passed via SCM_RIGHTs to VmRestore API and assign them
appropriately to RestoredNetConfig's fds field.
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
'NetConfig' FDs, when explicitly passed via SCM_RIGHTS during VM
creation, are marked as invalid during snapshot. See: #6332.
So, Restore should support input for the new net FDs. This patch adds
new field 'net_fds' to 'RestoreConfig'. The FDs passed using this new
field are replaced into the 'fds' field of NetConfig appropriately.
The 'validate()' function ensures all net devices from 'VmConfig' backed
by FDs have a corresponding 'RestoreNetConfig' with a matched 'id' and
expected number of FDs.
The unit tests provide different inputs to parse and validate functions
to make sure parsing and error handling is as per expectation.
Fixes#6286
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
Co-authored-by: Bo Chen <chen.bo@intel.com>
The list is gathered from going through various code paths in the code
base.
No functional change intended.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Per the KVM API document, that capability is only valid with in-kernel
irqchip that handles MSIs.
Through out the code base, there is no call to KVM_IOCTL_SIGNAL_MSI.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The compiler is now able to warn if an invalid attribute (e.g like a
feature) is not available.
See https://blog.rust-lang.org/2024/05/06/check-cfg.html for more
details.
Add build.rs files in the crates that use #cfg(fuzzing) to add fuzzing
to the list of valid cfg attributes.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The ability to control the rustc flags (required for adding new
attributes to the allowed list of #[cfg(..)]) requires bumping the MSRV
to 1.77.0
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Code in this crate is conditional on this feature so it necessary to
expose as a new feature and use that feature as a dependency when the
feature is enabled on the vmm crate.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Enable the use of the vmm crate with the "guest_debug" feature and make
the code that exercises that in the fuzzer unconditional on
"guest_debug" as a feature (as that is not specified as a feature in the
fuzz workspace itself.)
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The "dhat-heap" feature needs to be enabled inside the vmm crate as a
depenency from the top-level as there is build time check for that
feature inside the vmm crate.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
These tests use relatively large memory allocations and if they are
allowed to run in parallel can result in the container encountering an
OOM situation.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Update the vhost-user-backend crate version used along with related
crates (vhost and virtio-queue.) This requires minor changes to the
types used for the memory in the backends with the use of the
BitmapMmapRegion type for the Bitmap implementation.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Replace the specific Bitmap implementation from the type signature used
for functions that take memory. This allows more flexibility when using
these functions in particular when these functions are used by the
vhost-user-block backend. An updated vhost-user-backend crate requires
extra constraints on the Bitmap implementation used (it must support
BitmapReplace which AtomicBitmap does not.)
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Replace the specific Bitmap implementation from the type signature used
for functions that take memory. This allows more flexibility when using
these functions in particular when these functions are used by the
vhost-user-net backend. An updated vhost-user-backend crate requires
extra constraints on the Bitmap implementation used (it must support
BitmapReplace which AtomicBitmap does not.)
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This is to resolve the inconsistencies from our openapi specification,
as default values do not make sense for required fields.
Reported-by: James O. D. Hunt <james.o.hunt@intel.com>
Signed-off-by: Bo Chen <chen.bo@intel.com>
Change from default 4G to 2G to reduce the memory usage. This will help
avoid "No disk space left" errors when all snapshot tests run at once.
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
The snapshot_dir is not needed anymore fter the guest is restored.
Hence, remove it. This will potentially avoid transient failures caused
due to insufficient disk space.
Signed-off-by: Purna Pavan Chandra <paekkaladevi@linux.microsoft.com>
The mem_size field is not needed in TestContext. Drop it.
Make sure guest_evvq is read once. Clippy cannot figured out that it was
used.
While at it, add an extra assert for the spurious rxvq event test, too.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Clippy complained one use of the char_array macro.
Instead of fixing that use case, the observation is that the macro was
needed only because MP table types mixed c_char and c_uchar for no
particular reason.
Only use c_uchar in those types, and drop char_array.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The maintainer can then replace the plaintext body (derived from the
tag) with a markdown version and then publish.
As part of 6c4144e943 creating a draft
release was accidentally dropped.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
As MSHV also implements set/get_clock data, this patch
removes the KVM feature guard and make it x86_64 only and
both for KVM and MSHV.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The contents of this crate may change and cause conflicts - re-exporting
the contents is unnecessary.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This is required as the VcpuFd::run and VcpuFd::set_immediate_exit
methods now take a &mut self. I explored alternative solutions:
1. Using RefCell for runtime interior mutability - the Vcpu trait is
Sync and it's not possible to use RefCell with types that are Sync.
2. Using UnsafeCell - the mutable reference nature of ::run and and
::set_kvm_immediate_exit was added for a reason so it unwise to
bypass this.
3. Adjusting the trait interface to expose the &mut self - this requires
an Arc<Mutex<>> around the hypervisor::vcpu::Vcpu object and was very
intrusive.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The members for {Io, Mmio}{Read, Write} are unused as instead exits of
those types are handled through the VmOps interface. Removing these is
also a prerequisite due to changes in the mutability of the
VcpuFd::run() method.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
On Microsoft Hypervisor, we need to save/restore five
VP state components which are as follows:
1. Local APIC
2. Xsave
3. Synthetic Message Page
4. Synthetic Event Flags Page
5. Synthetic Timers
In the MSHV crate we created a single struct for all the
components and API to get/set the states.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
When using multiple PCI segments, the 32-bit and 64-bit mmio
aperture is split equally between each segment. Add an option
to configure the 'weight'. For example, a PCI segment with a
`mmio32_aperture_weight` of 2 will be allocated twice as much
32-bit mmio space as a normal PCI segment.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
In accordance with reuse requirements:
- Place each license file in the LICENSES/ directory
- Add missing SPDX-License-Identifier to files.
- Add .reuse/dep5 to bulk-license files
Fixes: #5887
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Replace actions: actions-rs/toolchain, upload-release-asset.
actions-rs/toolchain is unmaintained, for cross-compilation replace it
with houseabsolute/actions-rust-cross
Action upload-release-asset is unmaintained and has been archived since
Mar 4, 2021. An issue with upload-release-asset is that it creates
separate release for each job of matrix strategy. Thus, to solve these
issues, replace unmaintained upload-release-asset with upload-artifact
See: #5929
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
This removes the requirement to ensure that we land PRs that update the
Dockerfile (and the appropraite dev_cli.sh change) in a specific time
frame.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Assigning KVM_IRQFD (when unmasking a guest IRQ) after
KVM_SET_GSI_ROUTING can avoid kernel panic on the guest that is not
patched with commit a80ced6ea514 (KVM: SVM: fix panic on out-of-bounds
guest IRQ) on AMD systems.
Meanwhile, it is required to deassign KVM_IRQFD (when masking a guest
IRQ) before KVM_SET_GSI_ROUTING (see #3827).
Fixes: #6353
Signed-off-by: Yi Wang <foxywang@tencent.com>
Signed-off-by: Bo Chen <chen.bo@intel.com>
The caller shouldn't pass in an &str that's too long. This is a
precaution if something goes wrong in the caller.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Properly detach a device from a domain if that device is already
attached to another domain on an attach request (following section
5.13.6.3.2 of the virtio-iommu spec). Resolves nested virtualization
reboot.
Signed-off-by: Andrew Carp <acarp@crusoeenergy.com>
Ensures that any endpoints already attached to the domain are properly
mapped to a new endpoint on said endpoint's attach request. This is done
by search for all previous mappings in the domain and then issuing map
requests for the newly attached endpoint.
Signed-off-by: Andrew Carp <acarp@crusoeenergy.com>
Add infrastructure to lookup the host address for mmio regions on
external dma mapping requests. This specifically resolves vfio
passthrough for virtio-iommu, allowing for nested virtualization to pass
external devices through.
Fixes#6110
Signed-off-by: Andrew Carp <acarp@crusoeenergy.com>
VfioUserDmaMapping is already in the pci crate, this moves
VfioDmaMapping to match the behavior. This is a necessary change to
allow the VfioDmaMapping trait to have access to MmioRegion memory
without creating a circular dependency. The VfioDmaMapping trait
needs to have access to mmio regions to map external devices over
mmio (a follow-up commit).
Signed-off-by: Andrew Carp <acarp@crusoeenergy.com>
The memory region that is associated with the hotpluggable part of
a virtio-mem zone isn't backed by the file specified in the
MemoryZoneConfig. The file is used only for the fixed part of the
zone. When you try to restore a snapshot with virtio-mem, the
backing file is used for all its regions. This results in the
following error:
VmRestore(MemoryManager(GuestMemoryRegion(MappingPastEof)))
This patch sets backing_file only for the fixed part of a virtio-mem
zone.
Fixes: #6337
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
HV_PAGE_SIZE is defined as a usize in mshv_bindings.
Remove the redefinition, and perform casts where necessary.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
Add IOCTL number for generic hypercall ioctl (MSHV_ROOT_HVCALL).
Update IOCTL numbers for set/get vp state.
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
This reverts commit fcf229a33a.
The virtio-queue version needs to stay the same as the rest of the
source tree.
Signed-off-by: Bo Chen <chen.bo@intel.com>
The 'NetConfig' may contain FDs which can't be serialized correctly, as
FDs can only be donated from another process via a Unix domain socket
with `SCM_RIGHTS`. To avoid false use of the serialized FDs, this patch
explicitly set 'NetConfig' FDs as invalid for (de)serialization.
See: #6286
Signed-off-by: Bo Chen <chen.bo@intel.com>
Prefix field with an _ to indicate that this is intentionally unused.
This resolved a nightly compiler check issue due to the unusued field.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When restoring a VM, the VirtioPciCfgCapInfo struct is not properly
initialized. All fields are 0, including the offset where the
capabibility starts. Hence, when you read a PCI configuration register
in the range [0..length(VirtioPciCfgCap)] you get the value 0 instead of
the actual register contents.
Linux rescans the whole PCI bus when adding a new device. It reads the
values vendor_id and device_id for every device. Because these are
stored at offset 0 in pci configuration space, their value is 0 for
existing devices. As such, Linux considers that the devices have been
unplugged and it removes them from the system.
Fixes: #6265
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
Current MSHV emulator only works for x86 instruction decoder. So, let's
restrict its usage to x86.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
According to the virtio iommu spec (section 5.13.6.6), all mappings
within the entire range from virt_start to virt_end in an unmap
request must be removed. This change adds this functionality,
iterating through all mappings that fall within an unmap request
for that domain and removing them.
Signed-off-by: Andrew Carp <acarp@crusoeenergy.com>
Current instruction emulator can only decode x86 instructions. Thus,
restrict the exit handling for just x86 guests.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
APIC controller is only available on x86 machine. ARM uses a different
interrupt controller so those exit messages won't happen for ARM guests.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
MSR and CPUID are limited to x86 architecture so, reduce the visbility
of these two members inside struct MshvVcpu to just x86 architecture.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
error: the item `io` is imported redundantly
Error: --> devices/src/legacy/uart_pl011.rs:468:9
|
467 | use super::*;
| -------- the item `io` is already imported here
468 | use std::io;
| ^^^^^^^
error: the item `Arc` is imported redundantly
Error: --> devices/src/legacy/uart_pl011.rs:469:21
|
467 | use super::*;
| -------- the item `Arc` is already imported here
468 | use std::io;
469 | use std::sync::{Arc, Mutex};
| ^^^
error: could not compile `devices` (lib test) due to 8 previous errors
Error: warning: build failed, waiting for other jobs to finish...
Error: The process 'cross' failed with exit code 101
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
error: the item `read_le_u32` is imported redundantly
Error: --> devices/src/legacy/gpio_pl061.rs:342:17
|
341 | use super::*;
| -------- the item `read_le_u32` is already imported here
342 | use crate::{read_le_u32, write_le_u32};
| ^^^^^^^^^^^
|
= note: `-D unused-imports` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(unused_imports)]`
error: the item `write_le_u32` is imported redundantly
Error: --> devices/src/legacy/gpio_pl061.rs:342:30
|
341 | use super::*;
| -------- the item `write_le_u32` is already imported here
342 | use crate::{read_le_u32, write_le_u32};
| ^^^^^^^^^^^^
error: the item `Arc` is imported redundantly
Error: --> devices/src/legacy/gpio_pl061.rs:343:9
|
341 | use super::*;
| -------- the item `Arc` is already imported here
342 | use crate::{read_le_u32, write_le_u32};
343 | use std::sync::Arc;
| ^^^^^^^^^^^^^^
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
clippy was flagging this up as a mixture of mixed attributes but that
attribute is no longer necessary
warning: item has both inner and outer attributes
--> hypervisor/src/arch/x86/emulator/mod.rs:769:1
|
769 | / #[cfg(test)]
770 | | mod tests {
771 | | #![allow(unused_mut)]
| |_________________________^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#mixed_attributes_style
= note: `#[warn(clippy::mixed_attributes_style)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
error: the item `kvm_bindings` is imported redundantly
Error: --> hypervisor/src/kvm/aarch64/gic/mod.rs:9:18
|
9 | use crate::kvm::{kvm_bindings, KvmVm};
| ^^^^^^^^^^^^ the item `kvm_bindings` is already defined by prelude
|
= note: `-D unused-imports` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(unused_imports)]`
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
warning: assigning the result of `Clone::clone()` may be inefficient
--> vmm/src/device_manager.rs:4188:17
|
4188 | id = child_id.clone();
| ^^^^^^^^^^^^^^^^^^^^^ help: use `clone_from()`: `id.clone_from(child_id)`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assigning_clones
= note: `#[warn(clippy::assigning_clones)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
warning: `devices` (lib) generated 1 warning (run `cargo clippy --fix --lib -p devices` to apply 1 suggestion)
warning: assigning the result of `Clone::clone()` may be inefficient
--> virtio-devices/src/transport/pci_device.rs:1073:9
|
1073 | self.bar_regions = bars.clone();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `clone_from()`: `self.bar_regions.clone_from(&bars)`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assigning_clones
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
warning: assigning the result of `Clone::clone()` may be inefficient
--> devices/src/pvpanic.rs:213:9
|
213 | self.bar_regions = bars.clone();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `clone_from()`: `self.bar_regions.clone_from(&bars)`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assigning_clones
= note: `#[warn(clippy::assigning_clones)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Model Specific Registers (MSRs) are usually available on x86
architecture. So, let's reduce the visibility of MSRs to just x86
architecture.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
A deadlock can happen from the destination VM of live upgrade or
migration due to waiting on paused device worker threads. For example,
when a serialization error happens after the `DeviceManager` struct is
restored (where all virtio device worker threads are spawned but in
paused/parked state), a deadlock will happen from
`DeviceManager::drop()`, as it blocks for waiting worker threads to
join.
This patch ensures that we wake up all device (mostly virtio) worker
threads before we block for them to join.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Current version can't boot a SNP guest while using
more than one VCPU. It turns out that there is an
issue in the Snp AP creation process. We should be writing
to Software exitinfo1 instead of exitinfo2. This patch fixes
the issue and we can boot multi vcpu SNP guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Currently, we only support injecting NMI for KVM guests but we can do
the same for MSHV guests as well to have feature parity.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Microsoft Hypervisor raises this request to change the guest page
visibility in case of SEV-SNP guest.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Nuno Das Neves <nudasnev@microsoft.com>
Kernel can panic when get a unknown nmi when set unknown_nmi_panic,
we can use this feature to test if nmi injected to guest.
Signed-off-by: Yi Wang <foxywang@tencent.com>
When running on the merge group this workflow is run twice - once for
the create event (merge queue creates a new branch) and once for the
merge_group event. Unfortunately the second event would cause the first
to be cancelled - unfortunately sometimes that second event is the
create event where the job in the workflow only runs if it is also a
tag.
By creating distinct concurrency groups for each event type then the
cross cancellation can be avoided.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The workers share a common public IP address and often GitHub will
reject attempts to access the API due to exceeding the anonymous rate
limit threshold.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When a bare-metal worker is canceled, its workspace can be left with
files owned by the root user as a result of running tests from our
container. This patch add a step to fix workspace permissions for such
case before checking out code.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This commit ensures that the HttpApi thread flushes all the responses
before the application shuts down. Without this step, in case of a
VmmShutdown request the application might terminate before the
thread sends a response.
Fixes: #6247
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
Because of double quotes the current value is passed
as a single argument with a space in it to cargo.
This commit changes it to an array so each element
is passed as a different arguments.
Signed-off-by: Alexandru Matei <alexandru.matei@uipath.com>
On platforms where PCIe P2P is supported, inject a PCI capability into
NVIDIA GPU to indicate support.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
The DCO tool doesn't understand merge_groups but we still need to have a
valid status check to allow the merge group to proceed.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
And clean up some of the whitespace formatting so that the "name" and
"on" are grouped away from the "jobs".
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Most of our CI workers are now running form GitHub actions, so we are
ready to disable Jenkins CI workers.
See: #6231
Signed-off-by: Bo Chen <chen.bo@intel.com>
cloud-hypervisor, ch-remote, vhost-user-block and vhost-user-net all
need at least one argument to do anything useful, so printing command
help is helpful when they are run without arguments or a subcommand.
Use clap::Command::arg_required_else_help(true) to do this.
Signed-off-by: Chris Webb <chris@arachsys.com>
ch-remote crashes when run with --api-socket but no subcommand:
$ target/release/ch-remote --api-socket /tmp/api
thread 'main' panicked at src/bin/ch-remote.rs:509:14:
internal error: entered unreachable code
Use clap::Command::subcommand_required(true) to yield a more friendly
error in this case.
Signed-off-by: Chris Webb <chris@arachsys.com>
Host data that is passed to the hypervisor. Then
the firmware includes the data in the attestation report.
The data might include any key or secret that the SevSnp guest
might need later.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
The host data provided at launch. Data is passed
to the hypervisor during the completion of the
isolated import.
Host Data provided by the hypervisor during guest launch.
The firmware includes this value in all attestation
reports for the guest.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
To reduce issues caused by flaky tests split the musl and glibc jobs
into separate jobs. This means fewer jobs will need to be restarted for
flaky tests. This will also increase CI throughput since the musl builds
account for ~40% of the total CI time when run together with glibc.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Since we don't register ioevents in case of SEV-SNP guests. Thus, we
should not unregister it as well.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
With the nightly toolchain (2024-02-18) cargo check will flag up
redundant imports either because they are pulled in by the prelude on
earlier match.
Remove those redundant imports.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When a guest running on a terminal reboots, the sigwinch_listener
subprocess exits and a new one restarts. The parent never wait()s
for children, so the old subprocess remains as a zombie. With further
reboots, more and more zombies build up.
As there are no other children for which we want the exit status,
the easiest fix is to take advantage of the implicit reaping specified
by POSIX when we set the disposition of SIGCHLD to SIG_IGN.
For this to work, we also need to set the correct default exit signal
of SIGCHLD when using clone3() CLONE_CLEAR_SIGHAND. Unlike the fallback
fork() path, clone_args::default() initialises the exit signal to zero,
which results in a child with non-standard reaping behaviour.
Signed-off-by: Chris Webb <chris@arachsys.com>
Allow cloud-hypervisor to direct boot the bzImage kernel format using
the regular 32 bit entry point. This can share the memory and vcpu
setup with the regular PVH boot code, but requires the setup of the
'zero page'.
Signed-off-by: Stefan Nuernberger <stefan.nuernberger@cyberus-technology.de>
For SevSnp guest IO events are handled by GHCB protocol.
While we get the notification we have to notify via eventfd.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
In case of SEV-SNP guest devices use sw-iotlb to gain access guest
memory for DMA. For that F_IOMMU/F_ACCESS_PLATFORM must be exposed in
the feature set of virtio devices.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
According to PCIe specification, a 64-bit MMIO BAR should be
naturally aligned. In addition to being more compliant with
the specification, natural aligned BARs are mapped with
the largest possible page size by the host iommu driver, which
should speed up boot time and reduce IOTLB thrashing for virtual
machines with VFIO devices.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
The 'generate_ram_ranges' function currently hardcodes the assumption
that there are only 2 E820 RAM entries. This is not flexible enough to
handle vendor specific memory holes. Returning a Vec is also more
convenient for users of this function.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
Since the ACPI tables are generated inside the IGVM file in case of
SEV-SNP guest. So, we don't need to generate it inside the cloud
hypervisor.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
... enabled VMs. IOEvents are not supported in case of SEV-SNP VMs. All
the IO events are delievered via GHCB protocol.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This will help in identify whether a VM supports sev-snp and based on
that disable/enable certain features.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Implement workflow to to run static analysis and linting of all shell
scripts by using shfmt and shellcheck.
Fixes: #5396
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
We occasionally saw cloud-hypervisor crashed due to seccomp violations. The
coredumps showed the HTTP API thread crashing after it attempted to call
sched_yield(). The call came from rust stdlib's mpmc module, which calls
sched_yield() if several attempts to busy-wait for a condition to fulfil fall
short.
Since the system call is harmless and it comes from the stdlib, I opted to allow
all threads to call it.
Signed-off-by: Peteris Rudzusiks <rye@stripe.com>
Currently the only way to set the affinity for virtio block threads is
to boot the VM, search for the tid of each of the virtio block threads,
then set the affinity manually. This commit adds an option to pin virtio
block queues to specific host cpus (similar to pinning vcpus to host
cpus). A queue_affinity option has been added to the disk flag in
the cli to specify a mapping of queue indices to host cpus.
Signed-off-by: acarp <acarp@crusoeenergy.com>
Traditional way to configure vcpu don't work for sev-snp guests. All the
vCPU configuration for SEV-SNP guest is provided via VMSA.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This also fixes the following clippy warning on nightly build from cargo
fuzz:
warning: struct `RegionEntry` is never constructed
--> /home/chenb/project/cloud-hypervisor/cloud-hypervisor/block/src/vhdx/vhdx_header.rs:357:8
|
357 | struct RegionEntry {
| ^^^^^^^^^^^
|
= note: `RegionEntry` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
= note: `#[warn(dead_code)]` on by default
Signed-off-by: Bo Chen <chen.bo@intel.com>
For all VFIO devices, map all non-emulated MMIO regions to
the vfio container to allow PCIe P2P between all VFIO devices
on the virtual machine. This is required for a wide variety of
advanced GPU workloads such as GPUDirect P2P (DMA between two
GPUs), GPUDirect RDMA (DMA between a GPU and an IB device).
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
Currently kernel and firmware are checked as a payload.
IGVM should be checked as well. Otherwise, it hangs indefinitely.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Unaccepted GPA is usually thrown by Microsoft hypervisor in case of
mismatch between GPA and GVA mappings. This is a fatal message from the
hypervisor perspective so we would need to error out from the vcpu run
loop. Along with add some debug message to identify the broken mapping
between GVA and GPA.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
On guests with large amounts of memory, using the `prefault` option can
lead to a very long boot time. This commit implements the strategy
taken by QEMU to prefault memory in parallel using multiple threads,
decreasing the time to allocate memory for large guests by
an order of magnitude or more.
For example, this commit reduces the time to allocate memory for a
guest configured with 704 GiB of memory on 1 NUMA node using 1 GiB
hugepages from 81.44134669s to just 6.865287881s.
Signed-off-by: Sean Banko <sbanko@crusoeenergy.com>
The `ByteValued` trait implementations for the data structures from the
'linux_loader' crate are no longer needed, and hence their wrappers can
be removed.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Fix beta clippy issue:
error: file opened with `create`, but `truncate` behavior not defined
--> src/main.rs:624:26
|
624 | .create(true)
| ^^^^^^^^^^^^- help: add: `.truncate(true)`
|
= help: if you intend to overwrite an existing file entirely, call `.truncate(true)`
= help: if you instead know that you may want to keep some parts of the old file, call `.truncate(false)`
= help: alternatively, use `.append(true)` to append to the file instead of overwriting it
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#suspicious_open_options
= note: `-D clippy::suspicious-open-options` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::suspicious_open_options)]`
Signed-off-by: Bo Chen <chen.bo@intel.com>
The embedded error in the enum will be read on debug output of the
error.
Fixes beta clippy issue:
warning: field `0` is never read
--> vhost_user_block/src/lib.rs:64:23
|
64 | CreateKillEventFd(io::Error),
| ----------------- ^^^^^^^^^
| |
| field in this variant
|
= note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
64 | CreateKillEventFd(()),
| ~~
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
The embedded error in the enum will be read on debug output of the
error.
Fixes beta clippy issue:
warning: field `0` is never read
--> performance-metrics/src/performance_tests.rs:25:11
|
25 | Infra(InfraError),
| ----- ^^^^^^^^^^
| |
| field in this variant
|
= note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
25 | Infra(()),
| ~~
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
warning: field `0` is never read
--> block/src/qcow/vec_cache.rs:139:21
|
139 | struct NumCache(pub u64);
| -------- ^^^^^^^
| |
| field in this struct
|
= note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
139 | struct NumCache(());
| ~~
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
These structs directly embed another struct and then implement
ByteValued on that struct to implement ByteValued for the inner struct.
As such the inner struct is never directly accessed so to avoid the dead
code analysis mark this as allowed.
Beta clippy fix:
warning: field `0` is never read
--> arch/src/x86_64/mod.rs:129:32
|
129 | struct MemmapTableEntryWrapper(hvm_memmap_table_entry);
| ----------------------- ^^^^^^^^^^^^^^^^^^^^^^
| |
| field in this struct
|
= note: `MemmapTableEntryWrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
= note: `#[warn(dead_code)]` on by default
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
129 | struct MemmapTableEntryWrapper(());
|
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Beta clippy fix
warning: useless use of `vec!`
--> tests/integration.rs:5845:23
|
5845 | let kernels = vec![direct_kernel_boot_path()];
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: you can use an array directly: `[direct_kernel_boot_path()]`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec
= note: `#[warn(clippy::useless_vec)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Beta clippy fix:
warning: initializer for `thread_local` value can be made `const`
--> vmm/src/sigwinch_listener.rs:27:40
|
27 | static TX: RefCell<Option<File>> = RefCell::new(None);
| ^^^^^^^^^^^^^^^^^^ help: replace with: `const { RefCell::new(None) }`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#thread_local_initializer_can_be_made_const
= note: `#[warn(clippy::thread_local_initializer_can_be_made_const)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Beta clippy fix:
warning: this call to `as_ref.map(...)` does nothing
--> vmm/src/device_manager.rs:1234:9
|
1234 | self.console_resize_pipe.as_ref().map(Arc::clone)
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.console_resize_pipe.clone()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_asref
= note: `#[warn(clippy::useless_asref)]` on by default
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
According to crates.io the crc-any crate is actively maintained which
avoids issues with the crc32c crate and the nightly compiler.
Fixes: #6168
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When we import a page, we have a page with
some data or empty, empty does not mean there is no data,
it rather means it's full of zeros. We can skip writing the
data as guest memory of the page is already zeroed.
A page could be partially filled and the rest of the content is zero.
Our IGVM generation tool only fills data here if there is some data
without zeros. Rest of them are padded. We only write data
without padding and compare whether we complete writing
the buffer content. Still it's a full page and update the variable
with length of the full page.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
When the HTT flag CPUID.1.EDX[HTT] is 0, it indicates that there is
only a single logical processor in the package. When HTT is 1, it
indicates that CPUID.1.EBX[23:16] contains the number of logical
processors in the package.
When this information is not included in CPUID leaf 0x1, some cpu
topology enumeration software such as hwloc are known to crash.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
This commit adds the debug-console (or debugcon) device to CHV. It is a
very simple device on I/O port 0xe9 supported by QEMU and BOCHS. It is
meant for printing information as easy as possible, without any
necessary configuration from the guest at all.
It is primarily interesting to OS/kernel and firmware developers as they
can produce output as soon as the guest starts without any configuration
of a serial device or similar. Furthermore, a kernel hacker might use
this device for information of type B whereas information of type A are
printed to the serial device.
This device is not used by default by Linux, Windows, or any other
"real" OS, but only by toy kernels and during firmware development.
In the CLI, it can be configured similar to --console or --serial with
the --debug-console parameter.
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
Set the SEV control register so we know where to
start running. This register configures the
SEV feature control state on a virtual processor.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This register configures the SEV feature control
state on a virtual processor.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Consistent with the other data structures and constants used in TDX
support code import the necessary structures from the kernel for
accessing the vmcall structure.
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
These Default implementations either don't produce valid configs, are
no longer used outside of tests, or both.
For the tests, we can define our own local "default" values that make
the most sense for the tests, without worrying about what's
a (somewhat) sensible "global" default value.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Bumping anyhow crate from 1.0.75 to 1.0.79 will cause seccomp
failures through integration tests. Newly added backtrace support
relies on readlink and many other syscalls.
Issue noticed with test_api_http_pause_resume test, where second time
of VM PAUSE or VM RESUME prints error and causes panic.
Noticed that panic message in a thread which is not allowed to write
output triggered the issue.
So implementing Display trait for HttpError and ApiError enums to avoid
adding many syscalls to seccomp filter section.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@intel.com>
On hosts with >256 cpus, setting the cpu affinity to a host cpu index
>255 will return an error because type of `host_cpu` is `u8`.
This commit changes the type of `host_cpu` to `usize` to remove this
limitation.
Signed-off-by: Sean Banko <sbanko@crusoeenergy.com>
Move the duplicated logic to download OVMF into a helper function.
Explicitly specify the OVMF_FW_TAG instead of downloading the latest
so that new OVMF versions can be easily tested.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
Testing instructions are very old and type=dpdkvhostuser is
deprecated from DPDK.
logs from /var/log/openvswitch/ovs-vswitchd.log
|netdev_dpdk|WARN|dpdkvhostuser ports are considered deprecated;
please migrate to dpdkvhostuserclient ports
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@intel.com>
Uses of the old ApiRequest enum conflated two different concerns:
identifying an API request endpoint, and storing data for an API
request. This led to ApiRequest values being passed around with junk
data just to communicate a request type, which forced all API request
body types to implement Default, which in some cases doesn't make any
sense — what's the "default" path for a vhost-user socket? The
nonsensical Default values have led to tests relying on being able to
use nonsensical data, which is an impediment to adding better
validation for these types.
Rather than having API request types be represented by an enum, which
has to carry associated body data everywhere it's used, it makes more
sense to represent API request types as trait objects. These can have
an associated type for the type of the request body, and this makes it
possible to pass API request types and data around as siblings in a
type-safe way without forcing them into a single value even where it
doesn't make sense. Trait objects also give us dynamic dispatch,
which lets us get rid of several large match blocks.
To keep it possible to fuzz the HTTP API, all the Vmm methods called
by the HTTP API are pulled out into a trait, so the fuzzer can provide
its own stub implementation of the VMM.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
With the change in 7bc764d to expose the SVM bit for nested
virtualisation test_vfio can be re-enabled on the AMD workers.
Fixes: #5895
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
When using amd topology, the svm feature flag on cpuid leaf
0x8000_0001.ecx is overwritten. We update the amd cpu topology
logic to use the flag values that originated in
KVM_GET_SUPPORTED_CPUID ioctl and override as necessary.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
warning: this URL is not a hyperlink
--> arch/src/aarch64/layout.rs:114:58
|
114 | ...in https://www.kernel.org/doc/Documentation/arm64/booting.txt.
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use an automatic link instead: `<https://www.kernel.org/doc/Documentation/arm64/booting.txt.>`
|
= note: bare URLs are not automatically turned into clickable links
= note: `#[warn(rustdoc::bare_urls)]` on by default
I also noticed that it looks like this comment was supposed to be
applied to FDT_MAX_SIZE, not FDT_START, so I moved it.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
The VIRTIO specification[1] says:
> The upper 32 bits of the CID are reserved and zeroed.
We should therefore not allow the user to supply a VSOCK CID with
those bits set. To accomplish this, limit the public API of the
virtio-vsock device to only accept 32-bit CIDs, while still using
64-bit CIDs internally since that's how virtio-vsock works.
[1]: https://docs.oasis-open.org/virtio/virtio/v1.2/csd01/virtio-v1.2-csd01.html#x1-4400004
Signed-off-by: Alyssa Ross <hi@alyssa.is>
I accidentally ran a VM with CID 2 (VMADDR_CID_HOST), and very strange
and difficult to debug behavior ensued. I don't think a virtio-vsock
device should be allowed to have any of the special CIDs
(VMADDR_CID_ANY, VMADDR_CID_HYPERVISOR, VMADDR_CID_LOCAL, VMADDR_CID_HOST).
Signed-off-by: Alyssa Ross <hi@alyssa.is>
The socket is nonblocking, so it's not guaranteed that it will be
possible to read the whole connect command in a single iteration of
the event loop. To reproduce:
(echo -n 'CONNECT '; sleep 1; echo 1234; cat) | socat STDIO UNIX-CONNECT:vsock.sock
This would produce the error:
cloud-hypervisor: 5.509209s: <_vsock4> INFO:virtio-devices/src/vsock/unix/muxer.rs:446 -- vsock: error adding local-init connection: UnixRead(Os { code: 11, kind: WouldBlock, message: "Resource temporarily unavailable" })
To fix this, if we only get a partial command, we need to save it for
future iterations of the event loop, and only proceed once we've read
a complete command.
Signed-off-by: Alyssa Ross <hi@alyssa.is>
Complete the isolated import, telling the
Microsoft hypervisor that import is done so that
MSHV can issue SNP_LAUNCH_FINISH command.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Use right and exact size 32 bytes for host data field
for completing the isolated import. This way OOB
can be avoided during a function call.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Import all the isolated pages after parsing is
done on the iGVM file. Hypervisor adds those
pages for PSP measurement(part of the hashing).
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Current instructions are incorrect and there is now a new profile called
dev-opt to build the debug version of TD-SHIM.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Under the fuzzer this code appears dead:
error: field `0` is never read
--> /home/rob/src/cloud-hypervisor/arch/src/x86_64/mod.rs:128:32
|
128 | struct MemmapTableEntryWrapper(hvm_memmap_table_entry);
| ----------------------- ^^^^^^^^^^^^^^^^^^^^^^
| |
| field in this struct
|
= note: `MemmapTableEntryWrapper` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
= note: `-D dead-code` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(dead_code)]`
help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
|
128 | struct MemmapTableEntryWrapper(());
| ~~
Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
Add a 'rate_limit_groups' field to VmConfig that defines a set of
named RateLimiterGroups.
When the 'rate_limit_group' field of DiskConfig is defined, all
virtio-blk queues will be rate-limited by a shared RateLimiterGroup.
The lifecycle of all RateLimiterGroups is tied to the Vm.
A RateLimiterGroup may exist even if no Disks are configured to use
the RateLimiterGroup. Disks may be hot-added or hot-removed from the
RateLimiterGroup.
When the 'rate_limiter' field of DiskConfig is defined, we construct
an anonymous RateLimiterGroup whose lifecycle is tied to the Disk.
This is primarily done for api backwards compatability. Importantly,
the behavior is not the same! This implementation rate_limits the
aggregate bandwidth / iops of an individual disk rather than the
bandwidth / iops of an individual queue of a disk.
When neither the 'rate_limit_group' or the 'rate_limiter' fields of
DiskConfig is defined, the Disk is not rate-limited.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
Add a 'rate_limiter/group' module that defines the RateLimiterGroup
and a RateLimiterGroupHandle types.
The RateLimiterGroupHandle can be used in place of a RateLimiter to
limit the aggregate bandwidth and/or ops of multiple virtio-blk or
virtio-net queues.
Each RateLimiterGroup has an associated worker thread that broadcasts
an event to each RateLimiterGroupHandle when a RateLimiter is unblocked.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
CI reports errors:
error: writing `&Vec` instead of `&[_]` involves a new object where a slice will do
--> arch/src/x86_64/mod.rs:1351:19
|
1351 | epc_sections: &Vec<SgxEpcSection>,
| ^^^^^^^^^^^^^^^^^^^ help: change this to: `&[SgxEpcSection]`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#ptr_arg
= note: `-D clippy::ptr-arg` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::ptr_arg)]`
Signed-off-by: Yi Wang <foxywang@tencent.com>
CI reports clippy errors:
error: argument to `Path::join` starts with a path separator
--> tests/integration.rs:4076:58
|
4076 | let serial_socket = guest.tmp_dir.as_path().join("/tmp/serial.socket");
| ^^^^^^^^^^^^^^^^^^^^
|
= note: joining a path starting with separator will replace the path instead
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#join_absolute_paths
Signed-off-by: Yi Wang <foxywang@tencent.com>
CI reports clippy errors:
error: in a `match` scrutinee, avoid complex blocks or closures with blocks; instead, move the block or closure higher and bind it with a `let`
--> test_infra/src/lib.rs:93:51
|
93 | match (|| -> Result<(), WaitForBootError> {
| ___________________________________________________^
94 | | let listener =
95 | | TcpListener::bind(listen_addr.as_str()).map_err(WaitForBootError::Listen)?;
96 | | listener
... |
145 | | }
146 | | })() {
| |_________^
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#blocks_in_conditions
= note: `-D clippy::blocks-in-conditions` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::blocks_in_conditions)]`
Signed-off-by: Yi Wang <foxywang@tencent.com>
This PR addresses a bug in which the cpu topology of a guest
with non power-of-two number of cores is incorrect. For example,
in some contexts, a virtual machine with 2-sockets and 12-cores
will incorrectly believe that 16 cores are on socket 1 and 8
cores are on socket 2. In other cases, common topology enumeration
software such as hwloc will crash.
The root of the problem was the way that cloud-hypervisor generates
apic_id. On x86_64, the (x2) apic_id embeds information about cpu
topology. The cpuid instruction is primarily used to discover the
number of sockets, dies, cores, threads, etc. Using this information,
the (x2) apic_id is masked to determine which {core, die, socket} the
cpu is on. When the cpu topology is not a power of two
(e.g. a 12-core machine), this requires non-contiguous (x2) apic_id.
Signed-off-by: Thomas Barrett <tbarrett@crusoeenergy.com>
The following tests have been temporarily disabled:
1. Live upgrade/migration test with ovs-dpdk (#5532);
2. Disk hotplug tests on windows guests (#6037);
This patch has been tested with PR #6048.
Signed-off-by: Ravi kumar Veeramally <ravikumar.veeramally@intel.com>
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Tested-by: Bo Chen <chen.bo@intel.com>
For SEV-SNP guests we need to provide the extended memory. It follows a
very simple layout and very similar to other x86 guests.
First segment: [HIGH_RAM_START - MEM_32BIT_RESERVED_START]
PCI hole: [MEM_32BIT_RESERVED_START - RAM_64BIT_START]
Second segment: [RAM_64BIT_START - RAM_END]
Fixes#5993
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
The 'test_vfio_user' is prone to fail when the system is under high
workloads with errors:
```
Error while connecting to /var/tmp/spdk.sock
Is SPDK application running?
Error details: Invalid or non-existing address: '/var/tmp/spdk.sock'
```
This is because SPDK is not fully functional before we request to
create a nvme device using the vfio_user protocol. This patch stabilize
this test with allowing retires to execute host commands.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch defines a new function 'generate_ram_ranges', to generate
usable physical memory ranges for the guest based on the existing guest
memory managed by VMM. This function is also made public, so that it can
be reused, say by the IGVM loader in the future [1].
No functional change.
See: #6020
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch adds missing new lines after functions,
fixes few typos in the comments, adds few missing
comments to SNP related functions.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
There is no requirement to call copy_from_slice, since all the member
variables are identical and we can directly assign them value.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
There is a mix of v2, v3 and v4 in the codebase. Let's move to v4
everywhere because v2 seems to be using a deprecated version of nodejs.
This is throwing warnings when the Github action CI is running.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Currently there are some inconsistencies in Cargo.toml which is causing
the following warnings during the build process:
Error parsing Cargo.toml manifest, fallback to caching entire file:
Invalid TOML document: expected key-value, found comma
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
vmm: Add igvm module and loader module
Add a separate module named igvm to the vmm crate
with definitions to parse and load igvm to the guest memory.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Add necessary API to retrieve cpuid leaf on MSHV.
This API is used to update cpuid information
during the parsing of the igvm file.
Microsoft hypervisor does not provide common
CpuID like KVM. That's why we need to call this API
during the IGVM parsing.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This patch adds igvm to the Vm config and params as well as
the command line argument to pass igvm file to load into
guest memory. The file must maintain the IGVM format.
The CLI option is featured guarded by igvm feature gate.
The IGVM(Independent Guest Virtual Machine) file format
is designed to encapsulate all information required to
launch a virtual machine on any given virtualization stack,
with support for different isolation technologies such as
AMD SEV-SNP and Intel TDX.
At a conceptual level, this file format is a set of commands created
by the tool that generated the file, used by the loader to construct
the initial guest state. The file format also contains measurement
information that the underlying platform will use to confirm that
the file was loaded correctly and signed by the appropriate authorities.
The IGVM file is generated by the tool:
https://github.com/microsoft/igvm-tooling
The IGVM file is parsed by the following crates:
https://github.com/microsoft/igvm
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Random failures of downloading `cloud-hypervisor-static-aarch64` with
`wget` were seen. The commit applies a workaround to retry the download
for a few times.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit changes existing behavior of named TAP interfaces.
When booting a VM with configuration for a named TAP interface,
cloud-hypervisor will create the interface and apply a given
IP configuration to that interface. If the named interface
already exists on the system, the configuration is NOT overwritten.
Setting the ip and netmask fields in a tap interface configuration
for a named tap interface now works by handing this configuration
to the virtio_devices::Net object when it is created with a name.
This commit also touches net_util to make sure that the ip configuration
of existing TAP interfaces is not modified with ip or netmask handed to
open_tap.
Signed-off-by: Markus Sütter <markus.suetter@secunet.com>
The wget has been causing frequent CI failure for the past few days,
while it can't be reproduced manually. Let's show the wget details in
our CI pipeline to understand better future errors.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Running on host where vdpa_sim_blk module is not correctly loaded
test_vdpa_block passes.
"test common_parallel::test_vdpa_block ... ok"
This commit fixes the vdpa_sim_blk test to fail in that case.
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
Valid title format:
component1[, component2, componentN]: submodule: summary
Title should have at least one component
Components are separated by comma+space: ", "
Components are validated to be in valid_components
Components list is ended by a colon
Submodules are not validated
See: #5846
Signed-off-by: Ruslan Mstoi <ruslan.mstoi@intel.com>
We can skip the CI worker build if the changes are only from gitlint, or
the hidden files in the root folder, such as .github, .gitignore,
.gitlint, .rustfmt.toml, and .typos.toml.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This is particularly useful for commits with long component names. Of
course, it is better to have concise subject that is less than 50 char.
Signed-off-by: Bo Chen <chen.bo@intel.com>
As part SMP bringup for a SEV-SNP guest, BSP sets up the VMSA page for
each AP threads and informs hypervisor about the same using a VMGEXIT.
Thus, extend the current GHCB interface to handle this scenario.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
SEV-SNP guest can request AMD's secure co-processor i.e., PSP to
generate an runtime attesation report. During this process guest needs
to inform PSP about the request and response GPAs where that report
would be generated by the PSP. This is handled via a VMGEXIT request.
Thus, extend the current GHCB handling to add support for it.
Signed-off-by: Jinank Jain <jinankjain@microsoft.com>
We found that it's slow to load JSON when reading snap files. As
described in [1], using from_slice instead of from_reader can fix
this.
Also, fix the error type being returned.
1. https://github.com/serde-rs/json/issues/160
Signed-off-by: Yi Wang <foxywang@tencent.com>
Since the 'write()' to the event file was moved to its own thread
(see #5633), we have no reliable way to read the latest contents of
the event file from our integration tests, since we can't ensure the
'read()' from our test always happen after 'write()' is completed from
Cloud Hypervisor. This is also why we started to see random failures on
snapshot_restore tests (particularly when the system workload is high).
This patch adds a 1s sleep before reading the event file to mitigate the
random failures.
Signed-off-by: Bo Chen <chen.bo@intel.com>
error: use of a fallible conversion when an infallible one could be used
Error: --> virtio-devices/src/vhost_user/vu_common_ctrl.rs:206:51
|
206 | let actual_size: usize = queue.size().try_into().unwrap();
| ^^^^^^^^^^^^^^^^^^^ help: use: `into()`
|
= help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fallible_conversions
= note: `-D clippy::unnecessary-fallible-conversions` implied by `-D warnings`
= help: to override `-D warnings` add `#[allow(clippy::unnecessary_fallible_conversions)]`
error: could not compile `virtio-devices` (lib) due to previous error
Error: warning: build failed, waiting for other jobs to finish...
error: could not compile `virtio-devices` (lib test) due to previous error
Error: The process '/home/runner/.cargo/bin/cargo' failed with exit code 101
Signed-off-by: Bo Chen <chen.bo@intel.com>
When the script is invoked via dev_cli.sh, it always gets AUTH_DOWNLOAD_TOKEN
from the environment. The original test always returns true.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
Instead of relying on "wc" and "grep", this patch provides helper
functions for checking line counts and searching/counting keywords.
To understand assertion failures better, it also generate logs for the
L1/L2 VM commands when checks fail.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Add a test that supports configuring serial and console as TTY mode
at the same time. With this configuration, the VM can set up a legacy
serial device as an early printk console device, and then change to a
virito console device after the virito console device is initialized.
In this case, we can capture the logs printed by legacy serial on early
boot, and later by the virtio console.
Signed-off-by: Yong He <alexyonghe@tencent.com>
Cloud Hypovrisor supports legacy serial device and virito console device
for VMs. Using legacy serial device, CH can capture full VM console logs,
but its implementation is based on KVM PIO emulation and has poor
performance. Using the virtio console device, the VM console logs will
be sent to CH through the virtio ring, the performance is better, but CH
will only capture the VM console logs after the virtio console device is
initialized, the VM early startup logs will be discarded.
This patch provides a way to enable both the legacy serial device and the
virtio console device as a TTY mode by setting the leagcy serial port as
the VM's early printk device and setting the virtio console as the VM's
main console device.
Then CH can capture early boot logs from the legacy serial device and
capture later logs from the virito console device with better performance.
Signed-off-by: Yong He <alexyonghe@tencent.com>
2023-11-02 11:06:30 -07:00
325 changed files with 25195 additions and 17709 deletions
sh 'scripts/dev_cli.sh tests --metrics -- -- --report-file /root/workloads/metrics.json'
}
}
stage('Upload metrics report') {
steps {
sh 'curl -X PUT https://cloud-hypervisor-metrics.azurewebsites.net/api/publishmetrics -H "x-functions-key: $METRICS_PUBLISH_KEY" -T ~/workloads/metrics.json'
}
}
}
}
stage('Worker build - Rate Limiter') {
agent { node { label 'focal-metrics' } }
when {
branch 'main'
beforeAgent true
expression {
return runWorkers
}
}
stages {
stage('Checkout') {
steps {
checkout scm
}
}
stage('Run rate-limiter integration tests') {
options {
timeout(time: 10, unit: 'MINUTES')
}
steps {
sh 'scripts/dev_cli.sh tests --integration-rate-limiter'
}
}
}
}
stage('Worker build - SGX') {
agent { node { label 'jammy-sgx' } }
when {
beforeAgent true
allOf {
branch 'main'
expression {
return runWorkers
}
}
}
stages {
stage('Checkout') {
steps {
checkout scm
}
}
stage('Run SGX integration tests') {
options {
timeout(time: 1, unit: 'HOURS')
}
steps {
sh 'scripts/dev_cli.sh tests --integration-sgx'
}
}
stage('Run SGX integration tests for musl') {
options {
timeout(time: 1, unit: 'HOURS')
}
steps {
sh 'scripts/dev_cli.sh tests --integration-sgx --libc musl'
}
}
}
post {
always {
sh "sudo chown -R jenkins.jenkins ${WORKSPACE}"
deleteDir()
}
}
}
stage('Worker build - VFIO') {
agent { node { label 'jammy-vfio' } }
when {
beforeAgent true
allOf {
branch 'main'
expression {
return runWorkers
}
}
}
stages {
stage('Checkout') {
steps {
checkout scm
}
}
stage('Run VFIO integration tests') {
options {
timeout(time: 1, unit: 'HOURS')
}
steps {
sh 'scripts/dev_cli.sh tests --integration-vfio'
}
}
stage('Run VFIO integration tests for musl') {
options {
timeout(time: 1, unit: 'HOURS')
}
steps {
sh 'scripts/dev_cli.sh tests --integration-vfio --libc musl'
}
}
}
post {
always {
sh "sudo chown -R jenkins.jenkins ${WORKSPACE}"
deleteDir()
}
}
}
}
}
}
post {
regression {
script {
if (env.BRANCH_NAME == 'main') {
slackSend(color: '#ff0000', message: '"main" branch build is now failing', channel: '#jenkins-ci')
}
}
}
fixed {
script {
if (env.BRANCH_NAME == 'main') {
slackSend(color: '#00ff00', message: '"main" branch build is now fixed', channel: '#jenkins-ci')
}
}
}
}
}
def cancelPreviousBuilds() {
// Check for other instances of this particular build, cancel any that are older than the current one
@@ -108,7 +108,7 @@ do not wish to use the pre-built binaries.
## Booting Linux
Cloud Hypervisor supports direct kernel boot (the x86-64 kernel requires the kernel
built with PVH support) or booting via a firmware (either [Rust Hypervisor
built with PVH support or a bzImage) or booting via a firmware (either [Rust Hypervisor
Firmware](https://github.com/cloud-hypervisor/rust-hypervisor-firmware) or an
edk2 UEFI firmware called `CLOUDHV` / `CLOUDHV_EFI`.)
@@ -175,20 +175,15 @@ $ ./cloud-hypervisor \
#### Building your Kernel
Cloud Hypervisor also supports direct kernel boot. For x86-64, a `vmlinux` ELF kernel (compiled with PVH support) is needed. In order to support development there is a custom branch; however provided the required options are enabled any recent kernel will suffice.
Cloud Hypervisor also supports direct kernel boot. For x86-64, a `vmlinux` ELF kernel (compiled with PVH support) or a regular bzImage are supported. In order to support development there is a custom branch; however provided the required options are enabled any recent kernel will suffice.
@@ -110,6 +105,7 @@ The Cloud Hypervisor API exposes the following actions through its endpoints:
| Add vsock device to the VM | `/vm.add-vsock` | `/schemas/VsockConfig` | `/schemas/PciDeviceInfo` | The VM is booted |
| Remove device from the VM | `/vm.remove-device` | `/schemas/VmRemoveDevice` | N/A | The VM is booted |
| Dump the VM counters | `/vm.counters` | N/A | `/schemas/VmCounters` | The VM is booted |
| Inject an NMI | `/vm.nmi` | N/A | N/A | The VM is booted |
| Prepare to receive a migration | `/vm.receive-migration` | `/schemas/ReceiveMigrationData` | N/A | N/A |
| Start to send migration to target | `/vm.send-migration` | `/schemas/SendMigrationData` | N/A | The VM is booted and (shared mem or hugepages enabled) |
@@ -147,7 +143,7 @@ We want to create a virtual machine with the following characteristics:
Cloud Hypervisor uses [cargo-fuzz](https://github.com/rust-fuzz/cargo-fuzz) for fuzzing individual components.
The fuzzers are are in the `fuzz/fuzz_targets` directory
The fuzzers are in the `fuzz/fuzz_targets` directory
## Preparation
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