Convert the virtio input device to use the descriptor_utils
Reader/Writer helpers to simplify the code and allow support of
arbitrary descriptor layouts.
BUG=chromium:966258
TEST=./build_test.py
Change-Id: Ia9272496dc59b29ea9cde9f6454099c881242d4c
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1811712
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Switching the devices to the new interface reduces code duplication and
will ease fuzzing the devices as they now have a common input and output
interface for descriptors.
BUG=chromium:966258
TEST=vm.CrostiniStartEverything
Change-Id: I823c04dfc24e017433f8e8ab167bbd5dfafd338b
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1647371
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
With this, crosvm builds that don't have the CrOS version of
virglrenderer can build against master without adjustments.
BUG=chromium:924405
TEST=compile
Change-Id: Iee27c003bee1eb8947cb048dc16e2da6c68af11e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1797067
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
The guest kernel will allocate from PCI range of the virtgpu
device, and send physical addresses via a hypercall.
Right now, only support buffers that can be mmap'ed. We could
add optimizations for GBM buffers later if needed.
BUG=chromium:924405
TEST=compile
Change-Id: I094de96a2c35bcd2e18c8a6a2d8cdc39bb392e36
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1626794
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Use virglrenderer to get the metadata associated with a buffer.
We must do this before we allocate the guest kernel pages, so
they agree with host requirements. This implements the rough API
outlined here:
https://gitlab.freedesktop.org/virgl/virglrenderer/issues/119
Probably we want this in virv-renderer eventually, but that may take
some time, so for prototyping just use non-upstreamed virglrenderer
functions.
BUG=chromium:924405
TEST=compile
Change-Id: If78f274c813c2131b297144172019848806e3a0e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1790831
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Auto-Submit: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
For each guest memory region, setup the corresponding gpa to hva map
in the kernel vfio iommu table. Then the kernel vfio driver could
get the hpa through gpa. Device could use this gpa for dma also.
BUG=chromium:992270
TEST=none
Change-Id: I04008d68ab2ed182a789d6ee8c97a0ed9e1e4756
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1581141
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
Create VFIO device and VFIO PCI device in create_devices() function, and
intergrate it into PciRootBridge, so guest could see this vfio device.
Add a vfio config parameter, this config point to passthrough or mdev
device sysfs path.
For passthrough case, first user unbind host device from its driver,
then bind host device to vfio-pci. Like:
echo 0000:00:02.0 > /sys/bus/pci/devices/0000:00:02.0/driver/unbind
ech0 8086 1912 > /sys/bus/pci/drivers/vfio-pci/new_id
Finally pass the sysfs to crosvm through
--vfio=/sys/bus/pci/devices/0000:00:02.0
For mdev case, user create a mdev device through
echo $UUID > mdev_type/create, then pass this mdev device to crosvm like
--vfio=/sys/bus/pci/devices/0000:00:02.0/$UUID
BUG=chromium:992270
TEST=none
Change-Id: I0f59d6e93f62f9ab0727ad3a867d204f4ff6ad2d
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1581140
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
In the same spirit as write_all() for the standard io::Write::write()
function, add a write_zeroes_all() function with a default
implementation that calls write_zeroes() in a loop until the requested
length is met. This will allow write_zeroes implementations that don't
necessarily fulfill the entire requested length.
BUG=None
TEST=cargo test -p sys_util write_zeroes
Change-Id: I0fc3a4b3fe8904946e253ab8a2687555b12657be
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1811466
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Cody Schuffelen <schuffelen@google.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Alloc::PciBar {..} is used as a key in the AddressAllocator's
hashmap, so inform the device about the pci bus/dev numbers.
BUG=chromium:924405
TEST=compile
Change-Id: Ib9d94e516269c1dc9a375c2ceb9775cf5a421156
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1811585
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
In terms of layer and encapsulation, it's better that capset3 is
filled by the host rendering library. With gbm inside virglrenderer
now, use that instead.
BUG=chromium:924405
TEST=compile
Change-Id: I7eb554074da98ab5d40aa53389124b3fd749474d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1790830
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
According to kernel Documents/vfio.txt and
Documents/vfio-mediated-device.txt,user pass host assigned
device or mdev to crosvm through --vfio parameter, vfio module
open this device and get this device's information.
Implement PciDevice trait on this device, then vfio_pci
module could trap guest pci cfg r/w and mmio r/w,
and transfer this operation into kernel vfio.
Currently the relationship of vfio container:group:device are
1:1:1, in the future it could extend to 1Ⓜ️n.
BUG=chromium:992270
TEST=none
Change-Id: I8006ef65022d56197eaeb464811a59db2ce54b9a
Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1580458
Reviewed-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
Two compounded issues broke GPU support on ARM:
1) A mistake when applying code review comments to the initial checkin
of this file and not correctly copying the updated policy when testing
to the DUT.
2) Iteration of the /dev/dri directory from libvirglrender.so uses
getdents instead of getdents64, likely due to some differences in the C
vs Rust runtime.
BUG=chromium:1002667
TEST=glxgears with virtio-gpu on kevin
Change-Id: I225b85998a6a611ebe2a25a75cd88aab9939feb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1799287
Tested-by: David Riley <davidriley@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Switch to using Reader/Writer which allows buffers to be passed from
the guest as scatter gathers instead of requiring a single contiguous
buffer.
BUG=chromium:993452
TEST=apitrace replay
Change-Id: Ibe212cfa60eae16d70db248a2a619d272c13f540
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1775365
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: David Riley <davidriley@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: David Riley <davidriley@chromium.org>
Make sure all devices join any threads they spawn before returning from
the drop() handler after signaling the exit event.
BUG=chromium:992494
TEST=crosvm exits without errors
Change-Id: I6bc91c32a08f568b041765044caa9aff6f7cf4a9
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1802156
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Clean up the `linux` object (which contains the devices) before the
control sockets passed to `run_control` are closed. This allows crosvm
to shut down cleanly without any error messages about short reads from
the control sockets.
BUG=chromium:992494
TEST=exit crosvm without errors
Change-Id: I1040c2f9ecbd03f820c7082da3327962ecc445f1
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1802155
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
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>
This change adds a string based constructor of `SharedMemory` as well as
adding a method for retrieving that name from the underlying file. This
change also includes a new anonymous constructor.
TEST=cargo test -p sys_util
BUG=None
Change-Id: Ibd7a28851c8a0f41e595ee35b35f0d06fef1e1d9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1797187
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>
Rather than having a get_canceller() function on UsbTransfer, make the
submit function return the canceller. This makes it clear that the
transfer can't be cancelled before it is submitted.
BUG=None
TEST=None
Change-Id: Ice36c3096a1f8a5aafe93b5d5e27eb371183c19f
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1783599
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
This supports virtio disks that depend on multiple file descriptors. All
of the file descriptors are passed to the jail when relevant.
Bug: b/133432409
Change-Id: Idf2e24cd2984c0d12a47a523c13d24c1ba8d173e
Signed-off-by: Cody Schuffelen <schuffelen@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1691761
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
This change makes using docker a bit easier when displaying on the hosts
X11 server. The biggest change was that build_crosvm.sh will install the
hosts NVIDIA proprietary driver if needed.
TEST=docker/build_crosvm.sh
docker/crosvm_wrapper.sh
BUG=None
Change-Id: If64074715b0ad3a06727a4cc764d3ac06c4dfece
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1759139
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Tested-by: Zach Reizner <zachr@chromium.org>
Commit-Queue: Zach Reizner <zachr@chromium.org>
Remove the last (unused) reference to byteorder in vm_control/Cargo.toml
and remove it from the list of external crates in README.md.
BUG=None
TEST=./build_test
Change-Id: Ie70c0bc2f96c19b34ef1596885245eca7bc202f4
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1761156
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Use the standardized from_le_bytes() functions rather than the byteorder
crate.
BUG=None
TEST=./build_test
Change-Id: I07a062bf63c5d3ae1e25f403713bf9a1677e8cba
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1761155
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Use the stabilized standard to_le_bytes() and from_le_bytes() functions
rather than the byteorder crate.
BUG=None
TEST=./build_test
TEST=cargo test -p devices virtio_pci_common_config
Change-Id: I4106a41484760b9e7e586de07135874238bcadb0
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1761154
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Use the standard byte order conversion functions rather than the
byteorder crate.
BUG=None
TEST=./build_test
TEST=cargo build -p qcow_utils
TEST=cargo test -p qcow
Change-Id: I9ff7368cc54c539db1996f81d4220cabf7e6e301
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1761151
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Use the standard library u32 and u64 byteorder conversion functions (now
that they are stabilized) rather than the byteorder crate.
BUG=None
TEST=./build_test
Change-Id: I7d2b523c2df5f7cdf1cd7d5b760ede8e827e0517
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1761150
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Fix the last instance of this clippy warning:
warning: passing a unit value to a function
... and remove this warning from the "To be resolved" list in
bin/clippy.
BUG=None
TEST=bin/clippy passes without warnings
Change-Id: Ic1d558e935366d80eeadb96bf1ff951ce50edd5b
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1766623
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Reviewed-by: Tomasz Jeznach <tjeznach@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
By registering the notify address with Datamatch::AnyLength, KVM is able
to take advantage of KVM_FAST_MMIO_BUS to accelerate eventfd handling.
Seems this doesn't violate the virtio spec because "writing the 16-bit
virtqueue index" refers to the implementation of front-end driver, for
example, Linux's vp_notify() function. While how to handle the VQ index
write in VMM is not covererd by virtio spec. Here Crosvm ensures that
every VQ has dedicated notify address and KVM implements the notification
by eventfd, which should be fine with the spec.
On eve Pixelbook (R77 host kernel 4.4.185), in 5000 samples, on average
the MMIO write vmexit takes 0.96us with fast_mmio enabled, while it takes
3.36us without fast_mmio.
without fast_mmio:
232812.822491: kvm_exit: reason EPT_MISCONFIG rip 0xffffffff986f18ef info 0 0
232812.822492: kvm_emulate_insn: 0:ffffffff986f18ef:66 89 3e (prot64)
232812.822493: vcpu_match_mmio: gva 0xffffb0f4803a1004 gpa 0xe000f004 Write GPA
232812.822493: kvm_mmio: mmio write len 2 gpa 0xe000f004 val 0x1
232812.822495: kvm_entry: vcpu 1
with fast_mmio:
230585.034396: kvm_exit: reason EPT_MISCONFIG rip 0xffffffff9a6f18ef info 0 0
230585.034397: kvm_fast_mmio: fast mmio at gpa 0xe000f004
230585.034397: kvm_entry: vcpu 1
BUG=chromium:993488
TEST=Boot Crostini on eve and run iperf benchmark
TEST=Analysis kernel trace for vmexit handling time
Change-Id: Id1dac22b37490f7026b6c119c85ca9d104a8a3f4
Signed-off-by: Zide Chen <zide.chen@intel.corp-partner.google.com>
Signed-off-by: Sainath Grandhi <sainath.grandhi@intel.corp-partner.google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1762282
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Daniel Verkamp <dverkamp@chromium.org>
After a recent refactoring of display support, this import is only used
when building with the "gpu" feature enabled. Put it behind a cfg check
to avoid a warning when building without gpu support.
BUG=None
TEST=cargo build
TEST=emerge-nami crosvm
Change-Id: I4e407e09daa93c74203f3472dad5a3713b99d122
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1762448
Reviewed-by: Zach Reizner <zachr@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
We always advertise VIRTIO_GPU_F_VIRGL and don't activate the
worker thread if Renderer::init fails. We're unlikely to
encounter an platform where we can initialize a GBM device, but
can't initialize virglrenderer.
Since our virtio-gpu implementation depends on virglrenderer, we can
pipe 2D hypercalls to virglrenderer (QEMU does this too, when built
with the --enable-virglrenderer option).
Also remove virgl_renderer_resource_info since it's unlikely to work
with non-Mesa drivers.
BUG=chromium:906811
TEST=kmscube renders correctly (though there's a prior bug in closing
the rendering window -- see chromium:991830)
Change-Id: I7851cd0837fd226f523f81c5b4a3389dc85f3e4f
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1743219
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Auto-Submit: Gurchetan Singh <gurchetansingh@chromium.org>
Now that we're not creating EGL images anymore, we can remove
EGL logic.
BUG=chromium:906811
TEST=freecad works without any local Mesa patches
Change-Id: I09db1c828ae1a331eaeae7c66653a49fe42a04bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1725451
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Auto-Submit: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
With YUV support + modifier support coming up, it makes sense to
move GBM allocation inside virglrenderer so we can upstream
our use cases.
In addition, this allows us to use gbm_bo_map(..) for the freecad
issue, which would otherwise be resolved through local patches in
our graphics drivers.
BUG=chromium:906811
TEST=freecad works without Mesa patches
Change-Id: I61db5c58a5bc5a79fda3cec8ad6c322fae6acc9e
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1725450
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Auto-Submit: Gurchetan Singh <gurchetansingh@chromium.org>
With crrev.com/c/1745316, the regular ChromeOS build started
adding epatches to virglrenderer. Therefore, don't track virglrenderer
master for the time being, until we can upstream and/or remove our
downstream APIs.
BUG=chromium:906811
TEST=docker/wrapped_smoke_test.sh
Change-Id: I9567e9286130048fb793fecb4ff3801b7d64ddba
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1758371
Tested-by: Gurchetan Singh <gurchetansingh@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Commit-Queue: Gurchetan Singh <gurchetansingh@chromium.org>
Reviewed-by: David Riley <davidriley@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Crosvm's AC97 device had code that was duplicated between playback and
capture stream creation. Abstract that code out so it can be shared.
BUG=chromium:968724
TEST=aplay /dev/urandom within container
Change-Id: If2fb50a0655656726dd9c6255bc84493e91c04e3
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1749948
Tested-by: Fletcher Woodruff <fletcherw@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Chih-Yang Hsia <paulhsia@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Commit-Queue: Fletcher Woodruff <fletcherw@chromium.org>
We have stopped mounting /var/empty as we have decided that /mnt/empty
should be used instead.
BUG=chromium:933582,b:139436326
TEST=Start plugin VM.
Change-Id: I50bbf9d4a9ebd86d54cb9ecc67891921f46e27e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1757343
Tested-by: Dmitry Torokhov <dtor@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Auto-Submit: Dmitry Torokhov <dtor@chromium.org>
Add a new virtio configuration copying function to replace all of the
slightly varying read_config() and write_config() implementations in our
virtio devices. This replaces a lot of tricky bounds-checking code with
a single central implementation, simplifying the devices to a single
call to copy_config() in most cases.
The balloon device is also changed to represent its config space as a
DataInit struct to match most other devices and remove several unwrap()
calls.
BUG=None
TEST=./build_test
TEST=Boot vm_kernel+vm_rootfs in crosvm
TEST=Start Crostini on nami
Change-Id: Ia49bd6dbe609d17455b9562086bc0b24f327be3f
Signed-off-by: Daniel Verkamp <dverkamp@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/1749562
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Tested-by: kokoro <noreply+kokoro@google.com>
