On Wed, May 05, 2010 at 02:40:15PM -0500, Anthony Liguori wrote: > On 05/05/2010 06:09 AM, Michael S. Tsirkin wrote: >> Hi! >> I see this in virtio_ring.c: >> >> /* Put entry in available array (but don't update avail->idx * >> until they do sync). */ >> >> Why is it done this way? >> It seems that updating the index straight away would be simpler, while >> this might allow the host to specilatively look up the buffer and handle >> it, without waiting for the kick. >> > > It should be okay as long as you don't update idx for partial vectors. > > Regards, > > Anthony Liguori Sorry, what do you mean by partial vectors here? -- 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
