Re: [PATCH-v2 0/3] virtio/vhost: Add checks for uninitialized VQs

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Tue, 2013-04-02 at 15:01 +0300, Michael S. Tsirkin wrote:
> On Mon, Apr 01, 2013 at 11:58:21PM +0000, Nicholas A. Bellinger wrote:
> > From: Nicholas Bellinger <nab@xxxxxxxxxxxxxxx>
> > 
> > Hi folks,
> > 
> > This series adds a virtio_queue_valid() for use by virtio-pci code in
> > order to prevent opreations upon uninitialized VQs, which is currently
> > expected to occur during seabios setup of virtio-scsi with in-flight
> > vhost-scsi-pci device code.
> > 
> > On the vhost side, it also adds virtio_queue_valid() sanity checks in
> > vhost_virtqueue_[start,stop]() and vhost_verify_ring_mappings() in order
> > to skip the same uninitialized VQs.
> > 
> > Changes from v1:
> >   - Remove now unnecessary virtio_queue_get_num() calls in virtio-pci.c
> >   - Add virtio_queue_valid() calls in vhost_virtqueue_[start,stop]()
> > 
> > Please review.
> > 
> > --nab
> 
> Looks reasonable.
> Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
> 

Thanks MST!

Anthony, do you want to pick these up now..?  Or shall I include in the
next vhost-scsi-pci PATCH-v3 series..?

--nab

> So - does this fix the issues you saw with vhost-scsi?
> 
> > 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: Skip uninitialized VQs in vhost_virtqueue_[start,stop]
> > 
> >  hw/vhost.c      |   12 ++++++++++++
> >  hw/virtio-pci.c |   34 +++++++++++++++-------------------
> >  hw/virtio.c     |    5 +++++
> >  hw/virtio.h     |    1 +
> >  4 files changed, 33 insertions(+), 19 deletions(-)
> > 
> > -- 
> > 1.7.2.5
> --
> To unsubscribe from this list: send the line "unsubscribe target-devel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html


--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]
  Powered by Linux