tree 7580908e53fb78ddc20945075d7f25408a6325fb
parent 41f0377f73039ca6fe97a469d1941a89cd9757f1
author Rusty Russell <rusty@rustcorp.com.au> 1326345283 +1030
committer Rusty Russell <rusty@rustcorp.com.au> 1326345283 +1030

virtio: avoid modulus operation.

Since we know vq->vring.num is a power of 2, modulus is lazy (it's asserted
in vring_new_virtqueue()).

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>