Re: [Qemu-devel] [PATCH 0/3] virtio/vhost: Add checks for uninitialized VQs

["Michael S. Tsirkin" <mst@redhat.com>]

On Fri, Mar 29, 2013 at 04:33:09AM +0000, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
> 
> Hi folks,
> 
> This series adds a virtio_queue_valid() for use by virtio-pci code in
> order to prevent opreations upon uninitialized VQs, that is currently
> expected to occur during seabios setup of virtio-scsi.
> 
> This also includes a vhost specific check for uninitialized VQs in
> vhost_verify_ring_mappings() to avoid this same case.
> 
> Please review.
> 
> --nab

Okay, and does this fix the failures in vhost_verify_ring_mappings
that you've observed?

> Michael S. Tsirkin (1):
>   virtio: add API to check that ring is setup
> 
> Nicholas Bellinger (2):
>   virtio-pci: Add virtio_queue_valid checks ahead of
>     virtio_queue_get_num
>   vhost: Check+skip uninitialized VQs in vhost_verify_ring_mappings
> 
>  hw/vhost.c      |    3 +++
>  hw/virtio-pci.c |   27 +++++++++++++++++++++++++++
>  hw/virtio.c     |    5 +++++
>  hw/virtio.h     |    1 +
>  4 files changed, 36 insertions(+), 0 deletions(-)
> 
> -- 
> 1.7.2.5