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Noah Gold 654447f562 hypervisor: stop calling WHvSuspendPartitionTime. 
In Vcpu::on_suspend for WHPX, we were calling WHvSuspendPartitionTime
which didn't make sense for several reasons:
* on_suspend is intended to help with guest timekeeping. We don't need
  this on WHPX because the clock is managed via virtio-pvclock.
* WHvSuspendPartitionTime is a partition (read: VM) wide operation.
  That means it should be called once on the VM, not on every VCPU.
  Calling it on every VCPU yields errors on subsequent VCPUs.

BUG=b:294134741
TEST=ran virtio-pvclock enabled VM across a S3 and S4 host suspend. No
complaints from the guest kernel in the serial logs.

Change-Id: Ic5f71d277bf393db74e809cf8e0de3d95b4f895b
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/4752840
Reviewed-by: Colin Downs-Razouk <colindr@google.com>
Reviewed-by: Daniel Verkamp <dverkamp@chromium.org>
Commit-Queue: Noah Gold <nkgold@google.com>
2023-08-07 18:46:41 +00:00
..
src hypervisor: stop calling WHvSuspendPartitionTime. 2023-08-07 18:46:41 +00:00
tests
Cargo.toml
README.md

README.md

Hypervisor Support

Multiple hypervisor backends are supported. See Advanced Usage for overriding the default backend.

Hypervisors added to crosvm must meet the following requirements:

  • Hypervisor code must be buildable in crosvm upstream.
    • Within reason, crosvm maintainers will ensure the hypervisor's code continues to build.
  • Hypervisors are not required to be tested upstream.
    • We can't require testing upstream because some hypervisors require specialized hardware.
    • When not tested upstream, the hypervisor's maintainers are expected to test it downstream. If a change to crosvm breaks something downstream, then the hypervisor's maintainers are expected to supply the fix and can't expect a revert of the culprit change to be accepted upstream.

KVM

  • Platforms: Linux
  • Tested upstream: yes

KVM is crosvm's preferred hypervisor for Linux.

WHPX

HAXM

Android Specific

The hypervisors in this section are used as backends of the Android Virtualization Framework.

Geniezone

Gunyah