On Mon, Aug 15, 2016 at 01:54:14PM +0100, Stefan Hajnoczi wrote: > The VirtQueue->inuse field is not always updated correctly. These patches fix > it. > > Originally this series was called "virtio-balloon: fix stats vq migration" but > Ladi Prosek posted a nicer fix called "balloon: Fix failure of updating guest > memory status". I dropped the virtio-balloon patches. > > Changes from previous series: > * Missing comma in error formatting [Fam] > * virtio_descard() -> virtio_discard() [Michael] > * Multi-line comment style [Cornelia] > > Stefan Hajnoczi (2): > virtio: recalculate vq->inuse after migration > virtio: decrement vq->inuse in virtqueue_discard() > > hw/virtio/virtio.c | 16 ++++++++++++++++ > 1 file changed, 16 insertions(+)
I should mention this is for QEMU 2.7. These fixes are needed if the CVE-2016-5403 patch has been applied. Without these patches any device that holds VirtQueueElements across live migration will terminate with a "Virtqueue size exceeded" error message. virtio-balloon and virtio-scsi are affected. virtio-blk probably too but I haven't tested it. Stefan
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