On Tue, 12 Apr 2016 14:25:27 +0100
Stefan Hajnoczi <stefa...@redhat.com> wrote:
> QEMU prints an error message and exits when the device enters an invalid
> state. Terminating the process is heavy-handed. The guest may still be
> able to function even if there is a bug in a virtio guest driver.
> Moreover, exiting is a bug in nested virtualization where a nested guest
> could DoS other nested guests by killing a pass-through virtio device.
> I don't think this configuration is possible today but it is likely in
> the future.
> If the broken flag is set, do not process virtqueues or write back used
> descriptors. The broken flag can be cleared again by resetting the
> Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
> hw/virtio/virtio.c | 39 +++++++++++++++++++++++++++++++++++++++
> include/hw/virtio/virtio.h | 3 +++
> 2 files changed, 42 insertions(+)
Reviewed-by: Cornelia Huck <cornelia.h...@de.ibm.com>