Re: [Qemu-devel] [PATCH 09/10] virtio: read avail_idx from VQ only when necessary

[Cornelia Huck]

On Tue, 19 Jan 2016 19:48:42 +0100
Paolo Bonzini <address@hidden> wrote:

> >> @@ -1579,6 +1595,7 @@ int virtio_load(VirtIODevice *vdev, QEMUFile *f, int 
> >> version_id)
> >>                  return -1;
> >>              }
> >>              vdev->vq[i].used_idx = vring_used_idx(&vdev->vq[i]);
> >> +            vdev->vq[i].shadow_avail_idx = vring_avail_idx(&vdev->vq[i]);
> >>          }
> >>      }
> > 
> > 
> > shadow_avail_idx also should be updated on vhost stop,
> 
> That's virtio_queue_set_last_avail_idx, right?

That should also take care of vring teardown.