Il 19/09/2014 09:10, Jason Wang ha scritto:
>> >
>> > - if (!vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) {
>> > + if (vq->urgent || !vhost_has_feature(vq, VIRTIO_RING_F_EVENT_IDX)) {
> So the urgent descriptor only work when event index was not enabled?
> This seems suboptimal, we may still want to benefit from event index
> even if urgent descriptor is used. Looks like we need return true here
> when vq->urgent is true?
Its ||, not &&.
Without event index, all descriptors are treated as urgent.
Paolo
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