On Thu, Aug 27, 2015 at 01:18:47AM +0000, Wang, Wei W wrote: > Hi all, > > > > I have a question about the vring_avail: > > It only includes an idx (equivalent to the ring tail), which is used by the > frontend (virtio_net) to fill bufs. The backend (e.g. vhost_net) maintains the > ring head (last_avail_idx) by itself. The frontend checks if the ring is full > or empty via a counter (vq->num_free). > > My question is why can’t we include the ring head in the vring_avail struct, > so that the vq->num_free is not needed, and the backend can directly use it > without maintaining its own copy? > > > > Thanks, > > Wei > > > I'm not sure I understand your proposal, and what it would accomplish. Write a patch, that'll make it easier to discuss. Also copy all relevant mailing lists, not just kvm. -- 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
