Netdev 0x13 - switch Live migration Support For Virtio With SRIOV VF Datapath
Channel: netdevconf
Date: 26/05/2019

Or Gerlitz talks about support to handle virtio with SRIOV live-migration.

As of kernel 4.18 the virtio guest driver uses the SRIOV VF channel when it can or otherwise falls back to the classical the para-virtual channel. With this setup live-migration of VMs running under SRIOV is possible.
Or Gerlitz and Parav Pandit  propose a design based on the switchdev mode for
NIC host drivers.

More info:
https://netdevconf.org/0x13/session.html?talk-v-switch-virtio-sriov-vf-datapath