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

• Platforms: Windows
• Tested upstream: no
• Contacts: vnagarnaik@google.com

HAXM

• Platforms: Windows
• Tested upstream: no
• Contacts: vnagarnaik@google.com

Android Specific

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

Geniezone

• Platforms: Linux, aarch64 only
• Tested upstream: no
• Contacts: fmayle@google.com, smoreland@google.com

Gunyah

• Platforms: Linux, aarch64 only
• Tested upstream: no
• Contacts: quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, fmayle@google.com, smoreland@google.com