On Wed, Jun 14, 2023 at 9:45 AM David Marchand <[email protected]> wrote: > > At some point in OVS history, some virtio features were announced as > supported (ECN and UFO virtio features). > > The userspace TSO code, which has been added later, does not support > those features and tries to disable them. > > This breaks OVS upgrades: if an existing VM already negotiated such > features, their lack on reconnection to an upgraded OVS triggers a > vhost socket disconnection by Qemu. > This results in an endless loop because Qemu then retries with the same > set of virtio features. > > This patch proposes to try and detect those vhost socket disconnection > and fallback restoring the old virtio features (and disabling TSO for this > vhost port). > > Signed-off-by: David Marchand <[email protected]> > --- > Note: this series depends on Mike series and won't apply cleanly > without it.
Acked-by: Mike Pattrick <[email protected]> _______________________________________________ dev mailing list [email protected] https://mail.openvswitch.org/mailman/listinfo/ovs-dev
