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>
