diff --git a/hw/block/dataplane/virtio-blk.c b/hw/block/dataplane/virtio-blk.c
index 101f32c..31d9eb8 100644
--- a/hw/block/dataplane/virtio-blk.c
+++ b/hw/block/dataplane/virtio-blk.c
@@ -73,7 +73,7 @@ static void notify_guest_bh(void *opaque)
unsigned i = j + ctzl(bits);
VirtQueue *vq = virtio_get_queue(s->vdev, i);
- virtio_notify_irqfd(s->vdev, vq);
+ virtio_notify(s->vdev, vq);
bits &= bits - 1; /* clear right-most bit */
}
--
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https://bugs.launchpad.net/bugs/1771042
Title:
dataplane interrupt handler doesn't support msi
Status in QEMU:
New
Bug description:
hw/block/dataplane/virtio-blk.c commit
1010cadf62332017648abee0d7a3dc7f2eef9632
in the function notify_guest_bh, the function virtio_notify_irqfd is called
to deliver the interrupt corresponding to the vq
however, without the dataplane, hw/block/virtio_blk_req_complete calls
virtio_notify to deliver the interrupt (immediately). this goes though
a slightly more involved path that calls virtio_pci_notify which includes
a case to handle msi interrupts.
so, msi interrupts with block devices aren't serviced when using dataplane
batching.
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