Re: [PATCH 34/40] vdpa: fix network breakage after cancelling migration

[Jason Wang]

On Fri, Dec 8, 2023 at 2:51 AM Si-Wei Liu <si-wei.liu@oracle.com> wrote:
>
> Fix an issue where cancellation of ongoing migration ends up
> with no network connectivity.
>
> When canceling migration, SVQ will be switched back to the
> passthrough mode, but the right call fd is not programed to
> the device and the svq's own call fd is still used. At the
> point of this transitioning period, the shadow_vqs_enabled
> hadn't been set back to false yet, causing the installation
> of call fd inadvertently bypassed.
>
> Fixes: a8ac88585da1 ("vhost: Add Shadow VirtQueue call forwarding 
> capabilities")
> Cc: Eugenio Pérez <eperezma@redhat.com>

Let's cc stable and post this as an independent patch.

>
> Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>

Acked-by: Jason Wang <jasowang@redhat.com>

Thanks