diff --git a/Cargo.lock b/Cargo.lock
index ebd29b4b4..f29f67784 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -21,7 +21,7 @@ dependencies = [
  "byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-bindings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-ioctls 0.2.0 (git+https://github.com/rust-vmm/kvm-ioctls)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "linux-loader 0.1.0 (git+https://github.com/rust-vmm/linux-loader)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
@@ -53,7 +53,7 @@ name = "atty"
 version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "termion 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -65,23 +65,22 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "backtrace"
-version = "0.3.31"
+version = "0.3.32"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "autocfg 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace-sys 0.1.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-demangle 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "backtrace-sys"
-version = "0.1.28"
+version = "0.1.30"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -118,6 +117,15 @@ name = "byteorder"
 version = "1.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "c2-chacha"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "ppv-lite86 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "cast"
 version = "0.2.2"
@@ -190,9 +198,9 @@ dependencies = [
  "epoll 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-bindings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-ioctls 0.2.0 (git+https://github.com/rust-vmm/kvm-ioctls)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
  "vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)",
 ]
@@ -212,7 +220,7 @@ version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_users 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -223,7 +231,7 @@ version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -231,7 +239,7 @@ name = "failure"
 version = "0.1.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "backtrace 0.3.31 (registry+https://github.com/rust-lang/crates.io-index)",
+ "backtrace 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -242,7 +250,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -251,6 +259,15 @@ name = "fuchsia-cprng"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "getrandom"
+version = "0.1.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "glob"
 version = "0.2.11"
@@ -261,7 +278,7 @@ name = "ipnetwork"
 version = "0.14.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -286,20 +303,23 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 [[package]]
 name = "kvm-ioctls"
 version = "0.2.0"
-source = "git+https://github.com/rust-vmm/kvm-ioctls#331eea68b067194a29448c9fa4ba90baaca2be22"
+source = "git+https://github.com/rust-vmm/kvm-ioctls#c024055f7fe6a18508a05c0dbc905d300f91e003"
 dependencies = [
  "kvm-bindings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "lazy_static"
 version = "1.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "spin 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
 
 [[package]]
 name = "libc"
-version = "0.2.58"
+version = "0.2.59"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -308,11 +328,11 @@ version = "0.2.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "libz-sys 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
  "openssl-sys 0.9.47 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -321,9 +341,9 @@ version = "1.0.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -367,11 +387,11 @@ name = "net_util"
 version = "0.1.0"
 dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "net_gen 0.1.0",
  "pnet 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.40 (registry+https://github.com/rust-lang/crates.io-index)",
  "vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)",
 ]
@@ -393,9 +413,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "pkg-config 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -406,7 +426,7 @@ dependencies = [
  "devices 0.1.0",
  "kvm-bindings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-ioctls 0.2.0 (git+https://github.com/rust-vmm/kvm-ioctls)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-allocator 0.1.0",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
@@ -442,7 +462,7 @@ version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "ipnetwork 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_base 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_sys 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -483,7 +503,7 @@ name = "pnet_sys"
 version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -493,12 +513,17 @@ name = "pnet_transport"
 version = "0.22.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_base 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_packet 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "pnet_sys 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "ppv-lite86"
+version = "0.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "proc-macro2"
 version = "0.4.30"
@@ -512,10 +537,10 @@ name = "qcow"
 version = "0.1.0"
 dependencies = [
  "byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "remain 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)",
 ]
 
@@ -533,7 +558,7 @@ version = "0.4.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -545,7 +570,7 @@ version = "0.6.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "autocfg 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_chacha 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_hc 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -557,6 +582,18 @@ dependencies = [
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_chacha 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_hc 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_chacha"
 version = "0.1.1"
@@ -566,6 +603,16 @@ dependencies = [
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_chacha"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "autocfg 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_core"
 version = "0.3.1"
@@ -579,6 +626,14 @@ name = "rand_core"
 version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
+[[package]]
+name = "rand_core"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "getrandom 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_hc"
 version = "0.1.0"
@@ -587,6 +642,14 @@ dependencies = [
  "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "rand_hc"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand_core 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "rand_isaac"
 version = "0.1.1"
@@ -600,7 +663,7 @@ name = "rand_jitter"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -612,7 +675,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cloudabi 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_core 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "rdrand 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -645,7 +708,7 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.1.54"
+version = "0.1.56"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -653,7 +716,7 @@ name = "redox_termios"
 version = "0.1.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -664,7 +727,7 @@ dependencies = [
  "argon2rs 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "rand_os 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -694,7 +757,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.39 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -727,7 +790,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "serde"
-version = "1.0.93"
+version = "1.0.94"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -737,16 +800,21 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)",
  "ryu 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde 1.0.93 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde 1.0.94 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "spin"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
 [[package]]
 name = "ssh2"
 version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "libssh2-sys 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -757,7 +825,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "syn"
-version = "0.15.38"
+version = "0.15.39"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -772,7 +840,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 0.6.12 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.38 (registry+https://github.com/rust-lang/crates.io-index)",
+ "syn 0.15.39 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -790,7 +858,7 @@ name = "syntex_errors"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_pos 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -812,7 +880,7 @@ version = "0.42.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "rustc-serialize 0.3.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "syntex_errors 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -832,13 +900,13 @@ dependencies = [
 
 [[package]]
 name = "tempfile"
-version = "3.0.8"
+version = "3.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "remove_dir_all 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "winapi 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -857,9 +925,9 @@ name = "termion"
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 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)",
+ "redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)",
  "redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
@@ -906,7 +974,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "vcpkg"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
@@ -919,8 +987,8 @@ name = "vhost_rs"
 version = "0.1.0"
 dependencies = [
  "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
- "tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
  "vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)",
 ]
@@ -933,7 +1001,7 @@ version = "0.1.0"
 name = "vm-allocator"
 version = "0.1.0"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)",
 ]
 
@@ -943,7 +1011,7 @@ version = "0.1.0"
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 dependencies = [
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- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -953,12 +1021,12 @@ dependencies = [
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  "devices 0.1.0",
  "epoll 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "net_gen 0.1.0",
  "net_util 0.1.0",
  "pci 0.1.0",
- "tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "vhost_rs 0.1.0",
  "virtio-bindings 0.1.0",
  "vm-allocator 0.1.0",
@@ -975,7 +1043,7 @@ dependencies = [
  "epoll 4.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-bindings 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "kvm-ioctls 0.2.0 (git+https://github.com/rust-vmm/kvm-ioctls)",
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
  "linux-loader 0.1.0 (git+https://github.com/rust-vmm/linux-loader)",
  "log 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "net_util 0.1.0",
@@ -992,7 +1060,7 @@ name = "vmm-sys-util"
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 source = "git+https://github.com/rust-vmm/vmm-sys-util#cb33925bfd1eb314e5384c58c78874d2c98d6182"
 dependencies = [
- "libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -1040,14 +1108,15 @@ dependencies = [
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-"checksum backtrace 0.3.31 (registry+https://github.com/rust-lang/crates.io-index)" = "e0f77aa27f55a4beb477ff6bc4d9bf72f90eb422b19c1d8e5a644b8aeb674d66"
-"checksum backtrace-sys 0.1.28 (registry+https://github.com/rust-lang/crates.io-index)" = "797c830ac25ccc92a7f8a7b9862bde440715531514594a6154e3d4a54dd769b6"
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 "checksum bitflags 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4f67931368edf3a9a51d29886d245f1c3db2f1ef0dcc9e35ff70341b78c10d23"
 "checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
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 "checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
 "checksum blake2-rfc 0.2.18 (registry+https://github.com/rust-lang/crates.io-index)" = "5d6d530bdd2d52966a6d03b7a964add7ae1a288d25214066fd4b600f0f796400"
 "checksum byteorder 1.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "652805b7e73fada9d85e9a6682a4abd490cb52d96aeecc12e33a0de34dfd0d23"
+"checksum c2-chacha 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7d64d04786e0f528460fc884753cf8dddcc466be308f6026f8e355c41a0e4101"
 "checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
 "checksum cc 1.0.37 (registry+https://github.com/rust-lang/crates.io-index)" = "39f75544d7bbaf57560d2168f28fd649ff9c76153874db88bdbdfd839b1a7e7d"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
@@ -1061,6 +1130,7 @@ dependencies = [
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 "checksum failure_derive 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "ea1063915fd7ef4309e222a5a07cf9c319fb9c7836b1f89b85458672dbb127e1"
 "checksum fuchsia-cprng 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a06f77d526c1a601b7c4cdd98f54b5eaabffc14d5f2f0296febdc7f357c6d3ba"
+"checksum getrandom 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "e65cce4e5084b14874c4e7097f38cab54f47ee554f9194673456ea379dcc4c55"
 "checksum glob 0.2.11 (registry+https://github.com/rust-lang/crates.io-index)" = "8be18de09a56b60ed0edf84bc9df007e30040691af7acd1c41874faac5895bfb"
 "checksum ipnetwork 0.14.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b3d862c86f7867f19b693ec86765e0252d82e53d4240b9b629815675a0714ad1"
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@@ -1068,7 +1138,7 @@ dependencies = [
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 "checksum kvm-ioctls 0.2.0 (git+https://github.com/rust-vmm/kvm-ioctls)" = "<none>"
 "checksum lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "bc5729f27f159ddd61f4df6228e827e86643d4d3e7c32183cb30a1c08f604a14"
-"checksum libc 0.2.58 (registry+https://github.com/rust-lang/crates.io-index)" = "6281b86796ba5e4366000be6e9e18bf35580adf9e63fbe2294aadb587613a319"
+"checksum libc 0.2.59 (registry+https://github.com/rust-lang/crates.io-index)" = "3262021842bf00fe07dbd6cf34ff25c99d7a7ebef8deea84db72be3ea3bb0aff"
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 "checksum linux-loader 0.1.0 (git+https://github.com/rust-vmm/linux-loader)" = "<none>"
@@ -1087,21 +1157,26 @@ dependencies = [
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 "checksum pnet_sys 0.22.0 (registry+https://github.com/rust-lang/crates.io-index)" = "682b2eca84cc440bce8336813f78eb6d3cb0fed89fe0e87ae22acfca8363f176"
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-"checksum redox_syscall 0.1.54 (registry+https://github.com/rust-lang/crates.io-index)" = "12229c14a0f65c4f1cb046a3b52047cdd9da1f4b30f8a39c5063c8bae515e252"
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@@ -1112,18 +1187,19 @@ dependencies = [
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-"checksum syn 0.15.38 (registry+https://github.com/rust-lang/crates.io-index)" = "37ea458a750f59ab679b47fef9b6722c586c5742f4cfe18a120bbc807e5e01fd"
+"checksum syn 0.15.39 (registry+https://github.com/rust-lang/crates.io-index)" = "b4d960b829a55e56db167e861ddb43602c003c7be0bee1d345021703fac2fb7c"
 "checksum synstructure 0.10.2 (registry+https://github.com/rust-lang/crates.io-index)" = "02353edf96d6e4dc81aea2d8490a7e9db177bf8acb0e951c24940bf866cb313f"
 "checksum syntex 0.42.2 (registry+https://github.com/rust-lang/crates.io-index)" = "0a30b08a6b383a22e5f6edc127d169670d48f905bb00ca79a00ea3e442ebe317"
 "checksum syntex_errors 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)" = "04c48f32867b6114449155b2a82114b86d4b09e1bddb21c47ff104ab9172b646"
 "checksum syntex_pos 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3fd49988e52451813c61fecbe9abb5cfd4e1b7bb6cdbb980a6fbcbab859171a6"
 "checksum syntex_syntax 0.42.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7628a0506e8f9666fdabb5f265d0059b059edac9a3f810bda077abb5d826bd8d"
 "checksum tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)" = "15f2b5fb00ccdf689e0149d1b1b3c03fead81c2b37735d812fa8bddbbf41b6d8"
-"checksum tempfile 3.0.8 (registry+https://github.com/rust-lang/crates.io-index)" = "7dc4738f2e68ed2855de5ac9cdbe05c9216773ecde4739b2f095002ab03a13ef"
+"checksum tempfile 3.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e24d9338a0a5be79593e2fa15a648add6138caa803e2d5bc782c371732ca9"
 "checksum term 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "fa63644f74ce96fbeb9b794f66aff2a52d601cbd5e80f4b97123e3899f4570f1"
 "checksum termion 1.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6a8fb22f7cde82c8220e5aeacb3258ed7ce996142c77cba193f203515e26c330"
 "checksum textwrap 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c0b59b6b4b44d867f1370ef1bd91bfb262bf07bf0ae65c202ea2fbc16153b693"
@@ -1133,7 +1209,7 @@ dependencies = [
 "checksum unicode-xid 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "36dff09cafb4ec7c8cf0023eb0b686cb6ce65499116a12201c9e11840ca01beb"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum utf8-ranges 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "9d50aa7650df78abf942826607c62468ce18d9019673d4a2ebe1865dbb96ffde"
-"checksum vcpkg 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "def296d3eb3b12371b2c7d0e83bfe1403e4db2d7a0bba324a12b21c4ee13143d"
+"checksum vcpkg 0.2.7 (registry+https://github.com/rust-lang/crates.io-index)" = "33dd455d0f96e90a75803cfeb7f948768c08d70a6de9a8d2362461935698bf95"
 "checksum vec_map 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "05c78687fb1a80548ae3250346c3db86a80a7cdd77bda190189f2d0a0987c81a"
 "checksum vm-memory 0.1.0 (git+https://github.com/rust-vmm/vm-memory)" = "<none>"
 "checksum vmm-sys-util 0.1.0 (git+https://github.com/rust-vmm/vmm-sys-util)" = "<none>"
diff --git a/vm-virtio/src/console.rs b/vm-virtio/src/console.rs
new file mode 100755
index 000000000..2b2a23883
--- /dev/null
+++ b/vm-virtio/src/console.rs
@@ -0,0 +1,386 @@
+// Copyright 2019 Intel Corporation. All Rights Reserved.
+// SPDX-License-Identifier: Apache-2.0
+
+use epoll;
+use libc::EFD_NONBLOCK;
+use std;
+use std::cmp;
+use std::collections::VecDeque;
+use std::io;
+use std::io::Write;
+use std::os::unix::io::AsRawFd;
+use std::result;
+use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::{Arc, Mutex};
+use std::thread;
+
+use super::Error as DeviceError;
+use super::{
+    ActivateError, ActivateResult, DeviceEventT, Queue, VirtioDevice, VirtioDeviceType,
+    INTERRUPT_STATUS_USED_RING, VIRTIO_F_VERSION_1,
+};
+use crate::VirtioInterrupt;
+use vm_memory::{Bytes, GuestMemoryMmap};
+use vmm_sys_util::EventFd;
+
+const QUEUE_SIZE: u16 = 256;
+const NUM_QUEUES: usize = 2;
+const QUEUE_SIZES: &[u16] = &[QUEUE_SIZE; NUM_QUEUES];
+
+// New descriptors are pending on the virtio queue.
+const INPUT_QUEUE_EVENT: DeviceEventT = 0;
+const OUTPUT_QUEUE_EVENT: DeviceEventT = 1;
+// Some input from the VMM is ready to be injected into the VM.
+const INPUT_EVENT: DeviceEventT = 2;
+// The device has been dropped.
+const KILL_EVENT: DeviceEventT = 3;
+
+struct ConsoleEpollHandler {
+    queues: Vec<Queue>,
+    mem: GuestMemoryMmap,
+    interrupt_status: Arc<AtomicUsize>,
+    interrupt_cb: Arc<VirtioInterrupt>,
+    in_buffer: Arc<Mutex<VecDeque<u8>>>,
+    out: Box<io::Write + Send>,
+    input_queue_evt: EventFd,
+    output_queue_evt: EventFd,
+    input_evt: EventFd,
+    kill_evt: EventFd,
+}
+
+impl ConsoleEpollHandler {
+    /*
+     * Each port of virtio console device has one receive
+     * queue. One or more empty buffers are placed by the
+     * dirver in the receive queue for incoming data. Here,
+     * we place the input data to these empty buffers.
+     */
+    fn process_input_queue(&mut self) -> bool {
+        let mut in_buffer = self.in_buffer.lock().unwrap();
+        let count = in_buffer.len();
+        let recv_queue = &mut self.queues[0]; //receiveq
+        let mut used_desc_heads = [(0, 0); QUEUE_SIZE as usize];
+        let mut used_count = 0;
+        let mut write_count = 0;
+
+        for avail_desc in recv_queue.iter(&self.mem) {
+            let len;
+
+            let limit = cmp::min(write_count + avail_desc.len as u32, count as u32);
+            let source_slice = in_buffer
+                .drain(write_count as usize..limit as usize)
+                .collect::<Vec<u8>>();
+            let write_result = self.mem.write_slice(&source_slice[..], avail_desc.addr);
+
+            match write_result {
+                Ok(_) => {
+                    len = limit - write_count; //avail_desc.len;
+                    write_count = limit;
+                }
+                Err(e) => {
+                    error!("Failed to write slice: {:?}", e);
+                    break;
+                }
+            }
+
+            used_desc_heads[used_count] = (avail_desc.index, len);
+            used_count += 1;
+
+            if write_count >= count as u32 {
+                break;
+            }
+        }
+
+        for &(desc_index, len) in &used_desc_heads[..used_count] {
+            recv_queue.add_used(&self.mem, desc_index, len);
+        }
+        used_count > 0
+    }
+
+    /*
+     * Each port of virtio console device has one transmit
+     * queue. For outgoing data, characters are placed in
+     * the transmit queue by the driver. Therefore, here
+     * we read data from the transmit queue and flush them
+     * to the referenced address.
+     */
+    fn process_output_queue(&mut self) -> bool {
+        let trans_queue = &mut self.queues[1]; //transmitq
+        let mut used_desc_heads = [(0, 0); QUEUE_SIZE as usize];
+        let mut used_count = 0;
+
+        for avail_desc in trans_queue.iter(&self.mem) {
+            let len;
+            let _ = self
+                .mem
+                .write_to(avail_desc.addr, &mut self.out, avail_desc.len as usize);
+            let _ = self.out.flush();
+
+            len = avail_desc.len;
+            used_desc_heads[used_count] = (avail_desc.index, len);
+            used_count += 1;
+        }
+
+        for &(desc_index, len) in &used_desc_heads[..used_count] {
+            trans_queue.add_used(&self.mem, desc_index, len);
+        }
+        used_count > 0
+    }
+
+    fn signal_used_queue(&self) -> result::Result<(), DeviceError> {
+        self.interrupt_status
+            .fetch_or(INTERRUPT_STATUS_USED_RING as usize, Ordering::SeqCst);
+        (self.interrupt_cb)(&self.queues[0]).map_err(|e| {
+            error!("Failed to signal used queue: {:?}", e);
+            DeviceError::FailedSignalingUsedQueue(e)
+        })
+    }
+
+    fn run(&mut self) -> result::Result<(), DeviceError> {
+        // Create the epoll file descriptor
+        let epoll_fd = epoll::create(true).map_err(DeviceError::EpollCreateFd)?;
+
+        // Add events
+        epoll::ctl(
+            epoll_fd,
+            epoll::ControlOptions::EPOLL_CTL_ADD,
+            self.input_queue_evt.as_raw_fd(),
+            epoll::Event::new(epoll::Events::EPOLLIN, u64::from(INPUT_QUEUE_EVENT)),
+        )
+        .map_err(DeviceError::EpollCtl)?;
+        epoll::ctl(
+            epoll_fd,
+            epoll::ControlOptions::EPOLL_CTL_ADD,
+            self.output_queue_evt.as_raw_fd(),
+            epoll::Event::new(epoll::Events::EPOLLIN, u64::from(OUTPUT_QUEUE_EVENT)),
+        )
+        .map_err(DeviceError::EpollCtl)?;
+        epoll::ctl(
+            epoll_fd,
+            epoll::ControlOptions::EPOLL_CTL_ADD,
+            self.input_evt.as_raw_fd(),
+            epoll::Event::new(epoll::Events::EPOLLIN, u64::from(INPUT_EVENT)),
+        )
+        .map_err(DeviceError::EpollCtl)?;
+        epoll::ctl(
+            epoll_fd,
+            epoll::ControlOptions::EPOLL_CTL_ADD,
+            self.kill_evt.as_raw_fd(),
+            epoll::Event::new(epoll::Events::EPOLLIN, u64::from(KILL_EVENT)),
+        )
+        .map_err(DeviceError::EpollCtl)?;
+
+        const EPOLL_EVENTS_LEN: usize = 100;
+        let mut events = vec![epoll::Event::new(epoll::Events::empty(), 0); EPOLL_EVENTS_LEN];
+
+        'epoll: loop {
+            let num_events =
+                epoll::wait(epoll_fd, -1, &mut events[..]).map_err(DeviceError::EpollWait)?;
+
+            for event in events.iter().take(num_events) {
+                let ev_type = event.data as u16;
+
+                match ev_type {
+                    INPUT_QUEUE_EVENT => {
+                        if let Err(e) = self.input_queue_evt.read() {
+                            error!("Failed to get queue event: {:?}", e);
+                            break 'epoll;
+                        }
+                    }
+                    OUTPUT_QUEUE_EVENT => {
+                        if let Err(e) = self.output_queue_evt.read() {
+                            error!("Failed to get queue event: {:?}", e);
+                            break 'epoll;
+                        } else {
+                            self.process_output_queue();
+                        }
+                    }
+                    INPUT_EVENT => {
+                        if let Err(e) = self.input_evt.read() {
+                            error!("Failed to get input event: {:?}", e);
+                            break 'epoll;
+                        } else if self.process_input_queue() {
+                            if let Err(e) = self.signal_used_queue() {
+                                error!("Failed to signal used queue: {:?}", e);
+                                break 'epoll;
+                            }
+                        }
+                    }
+                    KILL_EVENT => {
+                        debug!("KILL_EVENT received, stopping epoll loop");
+                        break 'epoll;
+                    }
+                    _ => {
+                        error!("Unknown event for virtio-console");
+                    }
+                }
+            }
+        }
+
+        Ok(())
+    }
+}
+
+/// Virtio device for exposing console to the guest OS through virtio.
+pub struct Console {
+    kill_evt: Option<EventFd>,
+    avail_features: u64,
+    acked_features: u64,
+    input: Arc<ConsoleInput>,
+    out: Option<Box<io::Write + Send>>,
+}
+
+/// Input device.
+pub struct ConsoleInput {
+    input_evt: EventFd,
+    in_buffer: Arc<Mutex<VecDeque<u8>>>,
+}
+
+impl ConsoleInput {
+    pub fn queue_input_bytes(&self, input: &[u8]) {
+        let mut in_buffer = self.in_buffer.lock().unwrap();
+        in_buffer.extend(input);
+        let _ = self.input_evt.write(1);
+    }
+}
+
+impl Console {
+    /// Create a new virtio console device that gets random data from /dev/urandom.
+    pub fn new(out: Option<Box<io::Write + Send>>) -> io::Result<(Console, Arc<ConsoleInput>)> {
+        let avail_features = 1u64 << VIRTIO_F_VERSION_1;
+
+        let input_evt = EventFd::new(EFD_NONBLOCK).unwrap();
+
+        let console_input = Arc::new(ConsoleInput {
+            input_evt,
+            in_buffer: Arc::new(Mutex::new(VecDeque::new())),
+        });
+
+        Ok((
+            Console {
+                kill_evt: None,
+                avail_features,
+                acked_features: 0u64,
+                input: console_input.clone(),
+                out,
+            },
+            console_input,
+        ))
+    }
+}
+
+impl Drop for Console {
+    fn drop(&mut self) {
+        if let Some(kill_evt) = self.kill_evt.take() {
+            // Ignore the result because there is nothing we can do about it.
+            let _ = kill_evt.write(1);
+        }
+    }
+}
+
+impl VirtioDevice for Console {
+    fn device_type(&self) -> u32 {
+        VirtioDeviceType::TYPE_CONSOLE as u32
+    }
+
+    fn queue_max_sizes(&self) -> &[u16] {
+        QUEUE_SIZES
+    }
+
+    fn features(&self, page: u32) -> u32 {
+        match page {
+            // Get the lower 32-bits of the features bitfield.
+            0 => self.avail_features as u32,
+            // Get the upper 32-bits of the features bitfield.
+            1 => (self.avail_features >> 32) as u32,
+            _ => {
+                warn!("Received request for unknown features page.");
+                0u32
+            }
+        }
+    }
+
+    fn ack_features(&mut self, page: u32, value: u32) {
+        let mut v = match page {
+            0 => u64::from(value),
+            1 => u64::from(value) << 32,
+            _ => {
+                warn!("Cannot acknowledge unknown features page.");
+                0u64
+            }
+        };
+
+        // Check if the guest is ACK'ing a feature that we didn't claim to have.
+        let unrequested_features = v & !self.avail_features;
+        if unrequested_features != 0 {
+            warn!("Received acknowledge request for unknown feature.");
+
+            // Don't count these features as acked.
+            v &= !unrequested_features;
+        }
+        self.acked_features |= v;
+    }
+
+    fn read_config(&self, _offset: u64, _data: &mut [u8]) {
+        warn!("Device specific configuration is not defined yet");
+    }
+
+    fn write_config(&mut self, _offset: u64, _data: &[u8]) {
+        warn!("Device specific configuration is not defined yet");
+    }
+
+    fn activate(
+        &mut self,
+        mem: GuestMemoryMmap,
+        interrupt_cb: Arc<VirtioInterrupt>,
+        status: Arc<AtomicUsize>,
+        queues: Vec<Queue>,
+        mut queue_evts: Vec<EventFd>,
+    ) -> ActivateResult {
+        if queues.len() != NUM_QUEUES || queue_evts.len() != NUM_QUEUES {
+            error!(
+                "Cannot perform activate. Expected {} queue(s), got {}",
+                NUM_QUEUES,
+                queues.len()
+            );
+            return Err(ActivateError::BadActivate);
+        }
+
+        let (self_kill_evt, kill_evt) =
+            match EventFd::new(EFD_NONBLOCK).and_then(|e| Ok((e.try_clone()?, e))) {
+                Ok(v) => v,
+                Err(e) => {
+                    error!("failed creating kill EventFd pair: {}", e);
+                    return Err(ActivateError::BadActivate);
+                }
+            };
+        self.kill_evt = Some(self_kill_evt);
+
+        if let Some(out) = self.out.take() {
+            let mut handler = ConsoleEpollHandler {
+                queues,
+                mem,
+                interrupt_status: status,
+                interrupt_cb,
+                in_buffer: self.input.in_buffer.clone(),
+                out,
+                input_queue_evt: queue_evts.remove(0),
+                output_queue_evt: queue_evts.remove(0),
+                input_evt: self.input.input_evt.try_clone().unwrap(),
+                kill_evt,
+            };
+
+            let worker_result = thread::Builder::new()
+                .name("virtio_console".to_string())
+                .spawn(move || handler.run());
+
+            if let Err(e) = worker_result {
+                error!("failed to spawn virtio_console worker: {}", e);
+                return Err(ActivateError::BadActivate);;
+            }
+
+            return Ok(());
+        }
+        Err(ActivateError::BadActivate)
+    }
+}
diff --git a/vm-virtio/src/lib.rs b/vm-virtio/src/lib.rs
index 9acb7d796..72a2529fb 100755
--- a/vm-virtio/src/lib.rs
+++ b/vm-virtio/src/lib.rs
@@ -20,6 +20,7 @@ use std::fmt;
 use std::io;
 
 mod block;
+mod console;
 mod device;
 pub mod fs;
 pub mod net;
@@ -30,6 +31,7 @@ mod rng;
 pub mod transport;
 
 pub use self::block::*;
+pub use self::console::*;
 pub use self::device::*;
 pub use self::fs::*;
 pub use self::net::*;
@@ -55,6 +57,7 @@ const VIRTIO_F_VERSION_1_BITMASK: u64 = 1 << VIRTIO_F_VERSION_1;
 enum VirtioDeviceType {
     TYPE_NET = 1,
     TYPE_BLOCK = 2,
+    TYPE_CONSOLE = 3,
     TYPE_RNG = 4,
     TYPE_BALLOON = 5,
     TYPE_9P = 9,