On Thu, Nov 24, 2011 at 05:49:23PM +0100, Paolo Bonzini wrote: > On 11/24/2011 05:42 PM, Michael S. Tsirkin wrote: > >Most users ignore the return value anyway, > >and virtio_load needs to look at supported features > >mask for the diagnostic anyway. So let's use virtio_set_features > >void. > > Could some backend make it a hard failure?
I don't see how, there's no way to report a failure from an io port write. > If I understand > correctly, this would have prevented the BAD_FEATURE bug too. > > Paolo Which bug? what would have prevented it.