virtio: disable notifications again after poll succeeded
While AioContext is in polling mode virtqueue notifications are not necessary. Some device virtqueue handlers enable notifications. Make sure they stay disabled to avoid unnecessary vmexits. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Tested-by: Richard Henderson <rth@twiddle.net> Tested-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
parent
332fa82d09
commit
1448c133e1
|
@ -2126,6 +2126,9 @@ static bool virtio_queue_host_notifier_aio_poll(void *opaque)
|
||||||
}
|
}
|
||||||
|
|
||||||
virtio_queue_notify_aio_vq(vq);
|
virtio_queue_notify_aio_vq(vq);
|
||||||
|
|
||||||
|
/* In case the handler function re-enabled notifications */
|
||||||
|
virtio_queue_set_notification(vq, 0);
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue