On Sat, Jul 21, 2012 at 02:02:58PM +0200, Sasha Levin wrote: > On 07/20/2012 03:40 PM, Michael S. Tsirkin wrote: > >> - err = init_vqs(vi); > >> > + if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) > >> > + vi->has_cvq = true; > >> > + > > How about we disable multiqueue if there's no cvq? > > Will make logic a bit simpler, won't it? > > multiqueues don't really depend on cvq. Does this added complexity really justifies adding an artificial limit? Well !cvq support is a legacy feature: the reason we support it in driver is to avoid breaking on old hosts. Adding more code to that path just doesn't make much sense since old hosts won't have mq. -- MST -- 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
