On Mon, Jun 20, 2016 at 01:48:52AM +0800, Huawei Xie wrote:
> In the following loop:
> while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
> ...
> }
> There is no external function call or any explict memory barrier
> in the loop, the re-read of used->idx would be optimized
In the following loop:
while (vq->vq_used_cons_idx != vq->vq_ring.used->idx) {
...
}
There is no external function call or any explict memory barrier
in the loop, the re-read of used->idx would be optimized and would
only be retrieved once.
use of voaltile normally should be pr
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