On Tuesday, December 04, 2012 09:35:03 AM Michael S. Tsirkin wrote: > On Mon, Dec 03, 2012 at 06:30:49PM +0800, Jason Wang wrote: > > On 12/03/2012 06:14 PM, Michael S. Tsirkin wrote: > > > On Tue, Nov 27, 2012 at 06:15:59PM +0800, Jason Wang wrote: > > >> > - if (!try_fill_recv(&vi->rq, GFP_KERNEL)) > > >> > - schedule_delayed_work(&vi->rq.refill, 0); > > >> > + for (i = 0; i < vi->max_queue_pairs; i++) > > >> > + if (!try_fill_recv(&vi->rq[i], GFP_KERNEL)) > > >> > + schedule_delayed_work(&vi->rq[i].refill, 0); > > >> > > > >> > mutex_lock(&vi->config_lock); > > >> > vi->config_enable = true; > > >> > mutex_unlock(&vi->config_lock); > > >> > > > >> > + BUG_ON(virtnet_set_queues(vi)); > > >> > + > > >> > > > >> > return 0; > > >> > > > >> > } > > >> > #endif > > > > > > Also crashing on device nack of command is also not nice. > > > In this case it seems we can just switch to > > > single-queue mode which should always be safe. > > > > Not sure it's safe. It depends on the reason why this call fails. If we > > left a state that the driver only use single queue but the device use > > multi queues, we may still lost the network. > > Looks like we won't: napi will stay enabled on all queues > so we will process incoming packets. True, consider there's no bug in qemu. Will leave a just leave a warning in next version. Thanks -- 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
