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>
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>
Read only memory is useful for triggering VM exits when the VM writes to
memory while allowing reads transparently and quickly. For example, a
virtual device implementation might not care if the VM reads a memory
mapped device register, but a exit would be required if the VM wrote to
the same register.
TEST=cargo test -p kvm; ./build_test
BUG=chromium:800626
Change-Id: Ic605b2cfc2a1e44941d91945f9390b9abb820040
Reviewed-on: https://chromium-review.googlesource.com/903075
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
We want to be able to run 64-bit ARM kernels using a 32-bit version of
crosvm, to make it more consistent use a u64 to represent
GuestAddress.
BUG=chromium:797868
TEST=./build_test passes on all architectures
TEST=crosvm runs on caroline
Change-Id: I43bf993592caf46891e3e5e05258ab70b6bf3045
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/896398
Reviewed-by: Dylan Reid <dgreid@chromium.org>
The kernel expects a pointer to a physical address, not a physical
address directly in the ioctl argument.
TEST=cargo test -p kvm
BUG=chromium:800626
Change-Id: I4a7298149373c00b5b9c634cd1dead7053d053c3
Reviewed-on: https://chromium-review.googlesource.com/893215
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
This is used by the plugin process API, which may register an IRQ
routing table.
TEST=./build_test
BUG=chromium:800626
Change-Id: If40965e8abfb0c9074c90b5fc77f9042f06499e0
Reviewed-on: https://chromium-review.googlesource.com/857910
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dmitry Torokhov <dtor@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
For the callers of get_dirty_log, they must pass in bitmap large enough
to hold the log. Instead of duplicating that calculation inside the
method and the caller, this change provides a public helper usable by
both to calculate the bitmap's minimum size.
TEST=./build_test
BUG=chromium:800626
Change-Id: I349aa0dd7e78e7f9ea3d35ba0acba8088fd77a4e
Reviewed-on: https://chromium-review.googlesource.com/857909
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>
This is needed to support the plugin API, which might unregister such
eventfds.
BUG=chromium:800626
TEST=./build_test
Change-Id: Ic4e74ffd4b2374868644d1f6598509aba741ce00
Reviewed-on: https://chromium-review.googlesource.com/857908
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>
There were a few places that used this to get the page size inside of an
unsafe block, For convenience, this adds a safe wrapper in sys_util and
replaces all extant usage of sysconf with the wrapper version.
BUG=chromium:800626
TEST=./build_test
Change-Id: Ic65bf72aea90eabd4158fbdcdbe25c3f13ca93ac
Reviewed-on: https://chromium-review.googlesource.com/857907
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Re-generated the bindings for x86_64 and arm which now use union types
so a little bit of code in the library also changed, and adds bindings
for aarch64 which are required to run an aarch64 guest.
Also, I manually fixed the zero-length array cases where rust bindgen
doesn't properly align the structs. See rust bindgen bug 684.
BUG=chromium:797868
TEST=run crosvm on x86_64, ensure networking works
TEST=./build_test passes on x86
Change-Id: Iab2193a8f1d4c68bd3346ae683c74bbf16fe45d4
Signed-off-by: Sonny Rao <sonnyrao@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/845519
Reviewed-by: Zach Reizner <zachr@chromium.org>
There is a low limit on the maximum memory slot number imposed by the
kernel. On x86_64, that limit is 509. In order to delay hitting that
limit, we attempt to use the lowest unused slot number. As memory
regions are removed from the VM, the slot for that region is stored in a
heap so that that slot number can quickly be reused next time a memory
region is added.
BUG=None
TEST=finish a game of gnome-mahjong using virtio-wayland
Change-Id: I786c2e2b8ff239c19b3c8a18bd0f6e8f8dc2acbf
Reviewed-on: https://chromium-review.googlesource.com/740102
Commit-Ready: Stephen Barber <smbarber@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Problems that were fixed:
- gcc crate deprecated compile_library
- `cargo test -p kvm` had a compile error
- `cargo test -p kvm_sys` failed to link with libc
- main.rs failed to include `getpid` and had dead code
- fork.rs had a warning in `cargo test -p sys_util`
- unused const in serial.rs
BUG=None
TEST=sudo cargo test -p data_model -p io_jail -p kernel_loader -p kvm \
-p kvm_sys -p net_sys -p net_util -p syscall_defines -p sys_util \
-p virtio_sys -p vhost -p x86_64 -p crosvm
Change-Id: Iaf0389013fbcdfbfaa7cf37ea1a1fc045f480ada
Reviewed-on: https://chromium-review.googlesource.com/642509
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Jason Clinton <jclinton@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
This CL adds VM request capabilities to the control socket. These
requests include the basic exit as well as the essential ioeventfd and
irqfd requests. For virtio wayland, the register/unregister device
memory request was added.
TEST=cargo test
BUG=chromium:738638
Change-Id: I0cbf62d85a299cf454bcf6924a4e1d52d5b7183f
Reviewed-on: https://chromium-review.googlesource.com/602593
Commit-Ready: Zach Reizner <zachr@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
Factor out common ioctl wrappers and macros into their own module.
Signed-off-by: Stephen Barber <smbarber@chromium.org>
BUG=none
TEST=cargo test
Change-Id: Ibede8a853f5cc6c6d62565930f312b11024cc5b5
Reviewed-on: https://chromium-review.googlesource.com/566540
Commit-Ready: Stephen Barber <smbarber@chromium.org>
Tested-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Stephen Barber <smbarber@chromium.org>
Reviewed-by: Zach Reizner <zachr@chromium.org>
Add a module for accessing guest memory.
This module will replace all the slices that are used to access it
currently as those slices aren't valid because the memory is volatile
and a volatile slice doesn't exist in rust.
Modify the existing users so they no longer depend on the deprecated slice
access.
Change-Id: Ic0e86dacf66f68bd88ed9cc197cb14e45ada891d
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/509919
Add the ability to set sregs, lapic, and msrs as they are needed before
running the VM.
Change-Id: I5c6f01f6e5302e3c3519f8748dd292a60180b6d5
Signed-off-by: Dylan Reid <dgreid@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/498129
Reviewed-by: Zach Reizner <zachr@chromium.org>
This change adds a library that makes the usage of kvm safe. Features
that are in this initial patch are:
- checking for kvm extensions
- creating vms and vcpus
- adding memory regions
- accessing cpu registers
- running vcpus
- using kvm_run structure on kvm exit
- registering ioevents and irqevents
TEST=cargo test [--target=armv7a-cros-linux-gnueabi]
BUG=chromium:711556
Change-Id: I1f18aad0341ef5129bc5504e9419a3c422d8bdfd
Reviewed-on: https://chromium-review.googlesource.com/478551
Commit-Ready: Dylan Reid <dgreid@chromium.org>
Tested-by: Zach Reizner <zachr@chromium.org>
Reviewed-by: Dylan Reid <dgreid@chromium.org>
