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Diffstat (limited to 'hw/virtio/virtio.c')
-rw-r--r--hw/virtio/virtio.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index 82b6060b2a..03592c542a 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -1528,7 +1528,18 @@ static void virtio_queue_notify_vq(VirtQueue *vq)
void virtio_queue_notify(VirtIODevice *vdev, int n)
{
- virtio_queue_notify_vq(&vdev->vq[n]);
+ VirtQueue *vq = &vdev->vq[n];
+
+ if (unlikely(!vq->vring.desc || vdev->broken)) {
+ return;
+ }
+
+ trace_virtio_queue_notify(vdev, vq - vdev->vq, vq);
+ if (vq->handle_aio_output) {
+ event_notifier_set(&vq->host_notifier);
+ } else if (vq->handle_output) {
+ vq->handle_output(vdev, vq);
+ }
}
uint16_t virtio_queue_vector(VirtIODevice *vdev, int n)