Re: [PATCH v2 4/4] virtio-net: Add support for USO features
On 2024/08/05 19:08, Michael S. Tsirkin wrote:
On Mon, Aug 05, 2024 at 06:37:58PM +0900, Akihiko Odaki wrote:
> If cross-migrate=off, QEMU can still migrate on the same host (checkpoint
> and restart). QEMU can also migrate across hosts if the user ensures they
> are on the same platform.
What is so special about checkpoint/restart? I guess we hope that
downgrades are uncommon, but they are possible...
Downgrades will not work with cross-migrate=off. Users who want
downgrades should use cross-migrate=on.