Commit graph

42 commits

Author SHA1 Message Date
Michael Hoyle
6b19695c81 Add "base" crate and transition crosvm usages to it from sys_util
For now, this crate simply re-exports all of sys_util, but it will
be updated to provide new interfaces when needed. This is the
first step to making crosvm not directly depend on sys_util, so
that we can make the interface changes we need without fear of
negatively affecting (i.e. completely breaking) other usages
within chromeos.

BUG=b:162363783
TEST=./build_test

Change-Id: I7d0aa3d8a1f66af1c7fee8fd649723ef17027150
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2325168
Tested-by: Michael Hoyle <mikehoyle@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Michael Hoyle <mikehoyle@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2020-08-06 18:19:44 +00:00
Daniel Verkamp
a7b6a1c897 arch, main: add virtio-console parsing and creation
This allows the creation of virtio-console devices using the new
hardware=virtio-console parameter to the --serial option.

Also add support for the serial earlycon option, which allows using
virtio-console as the main console device with a traditional serial
device as the early console.  This allows logging during early boot
before PCI device discovery (when virtio-console devices are set up).

BUG=chromium:1059924
TEST=crosvm run -r vm_rootfs.img \
        --serial hardware=serial,type=stdout,console=false,earlycon=true \
        --serial hardware=virtio-console,type=stdout,console=true,stdin=true \
        vm_kernel

Change-Id: Iff48800272b154d49b1da00f3914799089268afe
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2127322
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
2020-04-23 07:17:59 +00:00
Daniel Verkamp
fbd6122f0b arch, devices: move serial creation to arch
Split the serial code  into two parts:

- Configuration and setup: arch/src/serial.rs
- Serial device emulation: devices/src/serial.rs

No change in functionality - this is just preparation for generalizing
the command line parsing/setup code so that it can be used with virtio
console devices as well.

BUG=chromium:1059924
TEST=emerge-nami crosvm
TEST=emerge-kevin crosvm

Change-Id: I0aaf9dd6f8096eac4a17077ab5bf569f57d64ff5
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2127319
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
2020-04-23 07:17:55 +00:00
Iliyan Malchev
2c1417b43a Serial: add input path overriding stdin for --serial
Allowing the input to be specified for file-based serial ports allows
the user of pipes as input/output. That enables kgdb over serial.

TEST=
Build a kernel with support for gdb

```
make x86_64_defconfig
make kvmconfig
./scripts/config --enable GDB_SCRIPTS
./scripts/config --enable KGDB
./scripts/config --enable KGDB_SERIAL_CONSOLE
./scripts/config --enable KGDB_LOW_LEVEL_TRAP
./scripts/config --enable KGDB_KDB
./scripts/config --enable KDB_KEYBOARD
./scripts/config --enable GDB_SCRIPTS
./scripts/config --set-val KDB_CONTINUE_CATASTROPHIC 0
make -j33
```

Setup devices for PTYs

To make sure crosvm doesn't create an ordinary file if socat is started
after it, create these named pipes first:

```
mkfifo ~/console_{in,out} ~/kgdb_{in,out}
```

Set up two PTYs: ~/kgdb for the debugger, and ~/serial for the console.
PTY ~/kgdb connects to ~/kgdb{in,out}, and ~/serial connects to
~/console{in,out}

```
socat -d -d -d \
    'PIPE:$HOME/console_out,rdonly=1,nonblock=1,ignoreeof=1!!PIPE:$HOME/console_in,wronly=1' \
    PTY,link=$HOME/serial,ctty,raw,echo=0

socat -d -d -d \
    'PIPE:$HOME/kgdb_out,rdonly=1,nonblock=1,ignoreeof=1!!PIPE:$HOME/kgdb_in,wronly=1' \
    PTY,link=$HOME/kgdb,ctty,raw,echo=0
```

Start crosvm with serial ports pointed at ~/console{in,out} and ~/kgdb{in,out}.

```
cargo run run -p 'init=/bin/sh panic=0 kgdboc=ttyS1,115200 kgdbwait kgdbcon' \
    --serial type=file,path=$HOME/console_out,num=1,console=true,stdin=false,input=$HOME/console_in \
    --serial type=file,path=$HOME/kgdb_out,input=$HOME/kgdb_in,num=2,console=false,stdin=false \
    -r ~/rootfs.img \
    ~/src/linux/arch/x86/boot/bzImage
```

Start GDB

```
gdb vmlinux -ex "target remote /home/dgreid/kgdb"
```

To break into gdb, open up the serial console, mount /proc and send a SysRq

```
minicom -D ~/serial
mount -t proc none /proc
echo g > /proc/sysrq-trigger
```

Change-Id: I18a9c1087d38301df49de08eeae2f8559b03463a
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2151856
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Dylan Reid <dgreid@chromium.org>
2020-04-19 22:22:46 +00:00
Keiichi Watanabe
275c1ef45d crosvm: Apply cargo fix for some clippy errors
Executed the following command to fix trivial style problems automatically.
$ rustup run nightly cargo fix -Z unstable-options --clippy \
  --all-features --all-targets

BUG=chromium:908640
TEST=build

Change-Id: I8a42806dc573b25d4ca918112e7b420793261d37
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2145537
Tested-by: Keiichi Watanabe <keiichiw@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Keiichi Watanabe <keiichiw@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2020-04-15 18:01:32 +00:00
Zach Reizner
e4cbef4caf tests: enable logging for boot test
The logs are important for diagnosing errors for the boot integration
testing. This change enables those logs.

TEST=cargo test -- boot
BUG=None

Change-Id: I1cc64fecacb0334118fec748f5382bc16c301e14
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2079177
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Auto-Submit: Zach Reizner <zachr@chromium.org>
2020-04-14 23:56:47 +00:00
Matt Delco
d2a862b41f crosvm: add handling for hyperv exits
When features for Hyper-V are enabled there's a another type of exit
that can be triggered.  This change attempts to add support for those
types of exits.

BUG=b:150151095
TEST=ran build_test

Change-Id: I3131a2c8d9c610576ac177dbfe82f78e8d5dbfb1
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2073254
Reviewed-by: Matt Delco <delco@chromium.org>
Tested-by: Matt Delco <delco@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Matt Delco <delco@chromium.org>
Auto-Submit: Matt Delco <delco@chromium.org>
2020-03-05 19:01:24 +00:00
Matt Delco
e73414db48 crosvm: add ability to enable caps on vcpu
This change primarily adds functionality to allow kvm features to be
enabled on a vcpu (most of the current infra only supporst the ioctl for
the vm fd).

BUG=b:144746965
TEST=ran 'build_test' and verified that the added tests passed.

Change-Id: I30c00b6f462377c21d477602ceba5853df953b37
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2055883
Tested-by: Matt Delco <delco@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Matt Delco <delco@chromium.org>
2020-02-20 02:12:03 +00:00
Matt Delco
c469580e6c crosvm: support kvm's hyper-v cpuid ioctl
Kvm can emulate the hyper-v paravirt interface.  Newer versions of kvm
can advertise the features they support via an ioctl() that reports the
cpuid leafs for this interface.  This change adds some support for the
ioctl() and plumbs it through the plugin interface so that plugins can
determine the level of support available in kvm.

BUG=b:144746965
TEST=Ran build_test on kernel that supports the ioctl.  Added temporary
code to print the cpuid leafs and verified that the output is as
expected.  Instrumented failure as expected from older kernels and
verified that results still passed.

Change-Id: I6cd7dade1793e4edb52b331d5b960685541f7ba3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2037919
Tested-by: Matt Delco <delco@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Matt Delco <delco@chromium.org>
2020-02-20 02:12:01 +00:00
Matt Delco
ce03437d56 tests: avoid internal error in pause test
When running plugin tests it's not uncommon to see:

vcpu 0 has internal error

Though the tests don't actually fail on this problem. This seems
to occur as a side effect of the plugin_vcpu_pause.c calling
crosvm_destory_memory() before the test VM has actually finished
running.

The main thread will call read() on the 'kill' eventfd 5 times for:
init, pause, unpause, unpause, kill

The vcpu thread will call write() on the eventfd up to 8 times:

init, pause #1, unpause #1, pause #2, unpause #2, pause #3,
unpause #3, kill

The main thread's third pause request might occur before the second
pause request has been processed, in which case the vcpu thread will
only be paused twice (thus there will only be 6 calls to write()).
Given the unpredictable # of events I've opted to split the
init/pause/unpause events to a separate eventfd and keep the 'kill'
eventfd solely for its intended purpose.

BUG=None
TEST=ran ./build_test several times and observed no failures in the
pause plugin test.

Change-Id: Ie0817a4419ae6199fcc5c53496360b2bd81556e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2012788
Reviewed-by: Matt Delco <delco@chromium.org>
Commit-Queue: Matt Delco <delco@chromium.org>
Tested-by: Matt Delco <delco@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
2020-02-19 23:05:34 +00:00
Chirantan Ekbote
4f9f5c7479 devices: fs: Support fs crypto ioctls
Add support for FS_IOC_{GET,SET}_ENCRYPTION_POLICY.  Unfortunately,
since the I/O direction is encoded backwards in the ioctl definitions,
these will only work with on a kernel that's compiled with a patch to
mark them as unrestricted FUSE ioctls.

BUG=b:136127632
TEST=Compile and run the vfs_crypto.c program on a virtio-fs mount
     inside a VM

Change-Id: I124c5a943111b453dd44921a079a2baa1036dfd4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1952570
Reviewed-by: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: Chirantan Ekbote <chirantan@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>
2019-12-10 03:10:57 +00:00
Matt Delco
a52b2a6c81 crosvm: add plugin API for async writes
A plugin might care to be immediately notified when a write
is made to a port, but it doesn't care to have the VM stopped
while the plugin calls back to resume the VM.

Unfortunately this means that multiple messages can be queued up in the
pipe and read() together by the plugin API.  Protobuf's parsing function
doesn't report how many bytes it read, so I've resorted to having crosvm
prefix every message with a length and then have the plugin lib parse
this number.  Impact on performance has not been measured.

BUG=b:143294496
TEST=Local build and run of build_test.  Verified that new unit
test was executed, exercised the case where multiple msgs are
received together, and completed successfully.

Change-Id: If6ef463e7b4d2e688e649f832a764fa644bf2d36
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1896376
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
2019-11-06 23:01:15 +00:00
Matt Delco
ac0b9b71d1 crosvm: pre-cache answers to plugin get calls
This change tries to improve the performance of a plugin-based VM
by adding a hint API that allows crosvm to proactively push cpu
state to the plugin when certain ports for hypercalls are accessed
by the VM.

BUG=None
TEST=build and run. See performance increase significantly.

Change-Id: I71af24ebc034095ffea42eedb9ffda0afc719cd6
Signed-off-by: Matt Delco <delco@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1873005
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-10-31 06:18:09 +00:00
Zach Reizner
5bff67d485 tests: test to see if crosvm can boot a kernel
This is the first `cargo test` which uses a linux kernel binary in
testing crosvm's major functionality. To get that binary, the test tries
various sources which may be influenced by the enviroment. If need be,
the chromiumos kernel is downloaded via git, configured, and built so
that crosvm can use it. The resulting binary is cached so that other
tests which need it can run much quicker.

TEST=cargo test -- boot
BUG=None

Cq-Depend: chromium:1867729
Change-Id: I123441d358ef886e0d7369eaa4ebd87373026d99
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1742924
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Auto-Submit: Zach Reizner <zachr@chromium.org>
2019-10-31 06:01:58 +00:00
Daniel Verkamp
e09ac979c5 plugin: add missing #include <string.h> in test
Fixes warnings during test build:

  <stdin>: In function 'main':
  <stdin>:52:17: warning: implicit declaration of function 'strerror'
  [-Wimplicit-function-declaration]
  <stdin>:70:9: warning: implicit declaration of function 'memcmp'
  [-Wimplicit-function-declaration]

BUG=None
TEST=docker/wrapped_smoke_test.sh

Change-Id: Ibec87db4ca289bec9b1a2c7080fdefebb6e86158
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1863822
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
2019-10-22 00:09:26 +00:00
Zach Reizner
506105dc0d use SharedMemory::{named, anon} to replace ::new
The new constructors are shorter and omit the bare `None` in the `anon`
call sites which gave no clues to the reader what the effect of that
`None` was. This should improve readability.

TEST=./build_test
BUG=None

Change-Id: I2e34e7df9a4ccc5da50edf4e963a6a42e3d84b22
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1797188
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
2019-09-11 09:34:12 +00:00
David Tolnay
1c5e2557e2 edition: Eliminate blocks superseded by NLL
Before the new borrow checker in the 2018 edition, we sometimes used to
have to manually insert curly braced blocks to limit the scope of
borrows. These are no longer needed.

Details in:

https://doc.rust-lang.org/edition-guide/rust-2018/ownership-and-lifetimes/non-lexical-lifetimes.html

TEST=cargo check --all-features
TEST=local kokoro

Change-Id: I59f9f98dcc03c8790c53e080a527ad9b68c8d6f3
Reviewed-on: https://chromium-review.googlesource.com/1568075
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
2019-04-17 17:22:57 -07:00
David Tolnay
aecf9a4dee edition: Remove extern crate lines
In Rust 2018 edition, `extern crate` is no longer required for importing
from other crates. Instead of writing:

    extern crate dep;
    use dep::Thing;

we write:

    use dep::Thing;

In this approach, macros are imported individually from the declaring
crate rather than through #[macro_use]. Before:

    #[macro_use]
    extern crate sys_util;

After:

    use sys_util::{debug, error};

The only place that `extern crate` continues to be required is in
importing the compiler's proc_macro API into a procedural macro crate.
This will hopefully be fixed in a future Rust release.

    extern crate proc_macro;

TEST=cargo check
TEST=cargo check --all-features
TEST=cargo check --target aarch64-unknown-linux-gnu
TEST=local kokoro

Change-Id: I0b43768c0d81f2a250b1959fb97ba35cbac56293
Reviewed-on: https://chromium-review.googlesource.com/1565302
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: David Tolnay <dtolnay@chromium.org>
2019-04-15 02:06:08 -07:00
David Tolnay
b4bd00fdad error: Print errors using Display impl
I have been running into Debug-printed error messages too often and
needing to look up in the source code each level of nested errors to
find out from the comment on the error variant what the short name of
the variant means in human terms. Worse, many errors (like the one shown
below) already had error strings written but were being printed from the
calling code in the less helpful Debug representation anyway.

Before:
    [ERROR:src/main.rs:705] The architecture failed to build the vm: NoVarEmpty

After:
    [ERROR:src/main.rs:705] The architecture failed to build the vm: /var/empty doesn't exist, can't jail devices.

TEST=cargo check --all-features
TEST=FEATURES=test emerge-amd64-generic crosvm

Change-Id: I77122c7d6861b2d610de2fff718896918ab21e10
Reviewed-on: https://chromium-review.googlesource.com/1469225
Commit-Ready: David Tolnay <dtolnay@chromium.org>
Tested-by: David Tolnay <dtolnay@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
2019-02-20 08:20:02 -08:00
Dmitry Torokhov
2c7e88199e plugin: allow retrieving and setting VM clock
Add crossvm plugin API to allow reading and setting guest clock.

BUG=b:122878975
TEST=cargo test -p kvm; cargo test --features=plugin

Change-Id: I3fd656c06b0e7e43ac88a337ac5d0caec8c59dba
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1419373
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-01-22 21:05:18 -08:00
Daniel Prilik
2200604d9c remove rand crate
the few uses of rand::thread_rng() have been replaced with either
prngs or reads from /dev/urandom. the implementations are under
the `rand_ish` minicrate.

`protoc-rust` depends on `tempdir`, which relies on rand, so
`tempdir` has been patched with a rewritten version that does not
have rand as a dependency.

BUG=chromium:921795
TEST=cargo test --features plugin

Change-Id: I6f1c7d7a1aeef4dd55ac71e58294d16c291b8871
Reviewed-on: https://chromium-review.googlesource.com/1409705
Commit-Ready: Daniel Prilik <prilik@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2019-01-17 20:20:50 -08:00
David Tolnay
2bac1e7a9c toolchain: Update to Rust 1.31.0
We updated the production toolchain from 1.30 to 1.31 in CL:1366446.
This CL does the same upgrade for the local developer toolchain and
Kokoro.

The relevant changes are in rust-toolchain and kokoro/Dockerfile.
The rest are from rustfmt.

TEST=cargo fmt --all -- --check
TEST=as described in kokoro/README.md

Change-Id: I3b4913f3e237baa36c664b4953be360c09efffd4
Reviewed-on: https://chromium-review.googlesource.com/1374376
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: David Tolnay <dtolnay@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-12-13 19:28:04 -08:00
Yunlian Jiang
31c20fdcce crosvm: add getpid and prlimit to seccomp
This is needed to make sure seccomp work with glibc 2.27

BUG=chromium:897477
TEST=None

Change-Id: I101aa07bffd8db2b449be1a697dafcd7d6f1cb58
Reviewed-on: https://chromium-review.googlesource.com/1294729
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
2018-10-23 02:55:29 -07:00
Yunlian Jiang
a70445aa3b crosvm: add openat to seccomp
This adds openat to a seccomp policy file if open is already there.
We need this because glibc 2.25 changed it system call for open().

BUG=chromium:894614
TEST=None

Change-Id: Ie5b45d858e8d9ea081fd7bfda81709bda048d965
Reviewed-on: https://chromium-review.googlesource.com/1292129
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
2018-10-21 05:25:01 -07:00
Zach Reizner
55a9e504be cargo fmt all source code
Now that cargo fmt has landed, run it over everything at once to bring
rust source to the standard formatting.

TEST=cargo test
BUG=None

Change-Id: Ic95a48725e5a40dcbd33ba6d5aef2bd01e91865b
Reviewed-on: https://chromium-review.googlesource.com/1259287
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-10-09 21:14:05 -07:00
Zach Reizner
a1422e6bca fix warning and bit rotted tests uncovered by kokoro
TEST=run kokoro presubmit
BUG=None

Change-Id: I301551f8f58263f1a8b7a8276867881cb17517ab
Reviewed-on: https://chromium-review.googlesource.com/1236889
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
2018-09-22 01:43:11 -07:00
Dmitry Torokhov
caa2e5a4ac plugin: do not fail crosvm_vcpu_get_msrs() if we failed to fetch some
KVM_GET_MSRS may return less MSRs that were requested; do not fail but
instead let callers to know how many were fetched.

BUG=None
TEST=cargo test --features plugin

Change-Id: Ie14a3d38b66bfe34f5279543bea9c6c78423527e
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1192232
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-08-31 05:22:52 -07:00
Dmitry Torokhov
658357638c plugin: allow retrieving list of supported MSRs
Add crossvm plugin API to allow fetching list of supported MSRs.

BUG=b:111083877
TEST=cargo test -p kvm; cargo test --features=plugin

Change-Id: I178c7bc33d606bef10422faac6bb9afb3fe0a014
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1152229
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-07-31 16:37:06 -07:00
Slava Malyugin
d1e391b8d4 plugin: allow retrieving and setting VCPU events
Add crosvm plugin API to allow fetching and setting VCPU events.

BUG=b:110056268
TEST=cargo test --features plugin -p kvm

Change-Id: Id66230f180f4bdb95bd1850ed050e439083701cc
Reviewed-on: https://chromium-review.googlesource.com/1128045
Commit-Ready: Slava Malyugin <slavamn@chromium.org>
Tested-by: Slava Malyugin <slavamn@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-07-11 18:48:50 -07:00
Dmitry Torokhov
bb65801679 plugin: allow retrieving and setting XCR VCPU states
Add crossvm plugin API to allow fetching and setting XCRs for VCPU.

BUG=b:79692549
TEST=cargo test -p kvm

Change-Id: I2a988279c08051a8d8865efc1e60f9692fa26272
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1062646
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-05-18 20:08:21 -07:00
Dmitry Torokhov
3e40b51a62 plugin: allow retrieving and setting VM and VCPU states
This change allows plugin to retrieve and set various VM and VCPU states:
interrupt controller, PIT, LAPIC and MP state.

BUG=b:76083711
TEST=cargo test -p kvm

Change-Id: Ie32a67b0cd4a1f0a19ccd826a6e1c9dc25670f95
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/986511
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-30 00:07:07 -07:00
Stephen Barber
a10b2d20a8 plugin: add crosvm_net_get_config
BUG=none
TEST=sudo cargo test --features plugin

Change-Id: Ib38fad250295d73529dff0451345b4274a261073
Reviewed-on: https://chromium-review.googlesource.com/911943
Commit-Ready: Stephen Barber <smbarber@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-08 00:37:50 -08:00
Dmitry Torokhov
532a94c1c8 Fix race between un-pausing vcpu and requesting vcpu pause
To ensure that we do not miss pause request sent while we were in paused
state, or were exiting paused state, let's start using
KVM_SET_SIGNAL_MASK. SIGRTMIN() + 0 signal will be blocked and thus is
not delivered, and it will only be checked when KVM_RUN is being
executed, reliably interrupting KVM_RUN.

TEST=cargo test --features plugin; cargo test -p kvm; ./build_test
BUG=chromium:800626

Change-Id: Iae67a411c23c2b14fbfcbc7d53d0bc86ec4b67d9
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/944850
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-03-08 00:37:33 -08:00
Dmitry Torokhov
9786573e07 allow plugin to query KVM for supported/emulated CPUIDs
This plumbs calls to KVM_GET_SUPPORTED_CPUID and KVM_GET_EMULATED_CPUID
to be available to plugins.

TEST=cargo test --features plugin; cargo test -p kvm
BUG=chromium:800626

Change-Id: I98879599b5f970c6c2720772658689a505d8abe1
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/938674
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-02-28 21:30:20 -08:00
Dmitry Torokhov
0db8f41245 Ensure we are not holding per-cpu data lock when pausing VCPU
We may want to issue additional crosvm_pause_vcpu() requests while VCPUs
are waiting to be resumed, so we need to make sure we are not holding
lock while waiting.

TEST=cargo test --features plugin
BUG=chromium:800626

Change-Id: Ia74836a567fc565fbd868abdcaa6d0174a4341ad
Signed-off-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/917426
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-02-16 15:12:24 -08:00
Zach Reizner
dadb7625ea allow plugin to query for KVM extensions
The guest may need to check for KVM extensions before blindly using
them.

TEST=cargo test --features plugin; cargo test -p kvm; ./build_test
BUG=chromium:800626

Change-Id: If87b928753cd71adeabac4fc7732c3fce7265834
Reviewed-on: https://chromium-review.googlesource.com/906008
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-12 22:42:40 -08:00
Zach Reizner
7ca9f771e7 add plugin support for configuring CPUID
The guest expects to be able to read the CPUID, so the plugin process
needs to specify what the CPUID for each VCPU will have.

TEST=cargo test --features plugin; ./build_test
BUG=chromium:800626

Change-Id: I9258540ab2501126c3d8cadbd09b7fc01d19f7a9
Reviewed-on: https://chromium-review.googlesource.com/906006
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-12 22:42:38 -08:00
Zach Reizner
ce8961d1fc allow non-dirty log memory regions from the plugin process
Dirty logging is not necessary for every memory region, so the plugin
process should be able to specific exactly which regions it would like
dirty logging enabled for.

TEST=cargo test --features plugin
BUG=chromium:800626

Change-Id: I28b8285357e7de1c8c3a1392bdfdb4853ec5a654
Reviewed-on: https://chromium-review.googlesource.com/900294
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-12 22:42:37 -08:00
Zach Reizner
7a4d7b1f50 add plugin support for model specific registers
The MSRs are useful for booting a full operating system that requires
them.

TEST=cargo test --features plugin; cargo test -p kvm; ./build_test
BUG=chromium:800626

Change-Id: I817fbf3e6868c85b373808bd48e568b5b2b458eb
Reviewed-on: https://chromium-review.googlesource.com/897412
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-02-12 22:42:36 -08:00
Zach Reizner
53528e33ed add support for accessing debug registers in the plugin process
The debug registers are useful to access for the plugin process in some
cases.

TEST=cargo test --features plugin; cargo test -p kvm; ./build_test
BUG=chromium:800626

Change-Id: I8f3f6c31c6989061a43cef948cf5b4e64bd52d30
Reviewed-on: https://chromium-review.googlesource.com/896945
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
2018-02-12 22:42:35 -08:00
Zach Reizner
cc30d58c18 crosvm: run plugin process in a jail by default
The plugin process is similar to a virtual device from the perspective
of crosvm. Therefore, the plugin process should be run in a jail,
similar to the other devices in crosvm.

TEST=cargo build --features plugin; ./build_test
BUG=chromium:800626

Change-Id: I881d7b0f8a11e2626f69a5fa0eee0aa59bb6b6be
Reviewed-on: https://chromium-review.googlesource.com/882131
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-12 22:42:34 -08:00
Zach Reizner
8864cb0f3a crosvm: add support for plugin process
The plugin process is good for running a VM that depends substantially
on devices that aren't implemented inside of crosvm.

TEST=cargo build --features plugin; ./build_test
BUG=chromium:800626

Change-Id: I7b4f656563742cd0bedc837205dd1240d497941d
Reviewed-on: https://chromium-review.googlesource.com/869357
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
2018-02-09 19:03:16 -08:00