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
> device.
> 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>

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