Re: [PATCH v2 4/4] virtio-net: Add support for USO features

On Thu, Aug 01, 2024 at 01:51:00AM -0400, Michael S. Tsirkin wrote: > So I suggest a single command that dumps some description of host > features, to be passed to qemu on destination. qemu then fails to > start on destination if some of these do not work. > The advantage is that this also helps things like -cpu host, > and a bunch of other things like vdpa where we like to pass through > config from kernel. Something like that could work indeed. I'm thinking whether it shouldn't require a new QMP command; that sounds more work, and we also needs Libvirt cooperations so QEMU migration will still fail. I wonder whether we can integrate it into migration handshake that I referred previously in our TODO item here: https://wiki.qemu.org/ToDo/LiveMigration#Migration_handshake