During live migration involving passthrough devices, the guest needs to know which virtio device will be a fail-over device for a given passthrough device.
Extending the virtio specification with a new "Group Identifier" capability allows qemu to set up the grouping at the time the guest is created. The "Group Identifier" can be as simple as a number, or an UUID. The driver can use the group identifier to pair the virtio device with the passthrough device. The passthrough device can contain the group identifier in the PCIe bridge to which it is attached. Venu Busireddy (1): Add "Group Identifier" to virtio PCI capabilities. content.tex | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
