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[Qemu-devel] [PATCH 0/2] virtio: revert virtio_queue_set_notification()

From: Stefan Hajnoczi
Subject: [Qemu-devel] [PATCH 0/2] virtio: revert virtio_queue_set_notification() nesting
Date: Thu, 12 Jan 2017 11:46:09 +0000

The virtio_queue_set_notification() nesting introduced for AioContext polling
raised an assertion with virtio-net (even in non-polling mode).  Converting
virtio-net and virtio-crypto to use virtio_queue_set_notification() in a
nesting fashion would be invasive and isn't worth it.

Patch 1 contains the revert to resolve the bug that Doug noticed.

Patch 2 is a less efficient but safe alternative.

Stefan Hajnoczi (2):
  Revert "virtio: turn vq->notification into a nested counter"
  virtio: disable notifications again after poll succeeded

 hw/virtio/virtio.c | 21 +++++++++------------
 1 file changed, 9 insertions(+), 12 deletions(-)


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