if (vq->num_free < out + in) {
pr_debug("Can't add buf len %i - avail = %i\n",
out + in, vq->num_free);
- /* We notify *even if* VRING_USED_F_NO_NOTIFY is set here. */
- vq->notify(&vq->vq);
+ /* FIXME: for historical reasons, we force a notify here if
+ * there are outgoing parts to the buffer. Presumably the
+ * host should service the ring ASAP. */
+ if (out)
+ vq->notify(&vq->vq);
END_USE(vq);
return -ENOSPC;
}
struct vring_virtqueue *vq = to_vvq(_vq);
START_USE(vq);
- BUG_ON(!(vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT));
/* We optimistically turn back on interrupts, then check if there was
* more to do. */
if (unlikely(vq->broken))
return IRQ_HANDLED;
- /* Other side may have missed us turning off the interrupt,
- * but we should preserve disable semantic for virtio users. */
- if (unlikely(vq->vring.avail->flags & VRING_AVAIL_F_NO_INTERRUPT)) {
- pr_debug("virtqueue interrupt after disable for %p\n", vq);
- return IRQ_HANDLED;
- }
-
pr_debug("virtqueue callback for %p (%p)\n", vq, vq->vq.callback);
if (vq->vq.callback)
vq->vq.callback(&vq->vq);