[dpdk-dev] [PATCH v3 1/7] vhost: use shadow used ring in dequeue path

[Tiwei Bie]

On Wed, Jun 27, 2018 at 04:49:53PM +0200, Maxime Coquelin wrote:
[...]
> @@ -1164,8 +1136,7 @@ rte_vhost_dequeue_burst(int vid, uint16_t queue_id,
>  
>  			if (mbuf_is_consumed(zmbuf->mbuf)) {
>  				used_idx = vq->last_used_idx++ & (vq->size - 1);

Above line and other `used_idx` related code in
this function should be removed too.

Apart from that,
Reviewed-by: Tiwei Bie <tiwei.bie at intel.com>

Thanks!

> -				update_used_ring(dev, vq, used_idx,
> -						 zmbuf->desc_idx);
> +				update_shadow_used_ring(vq, zmbuf->desc_idx, 0);
>  				nr_updated += 1;
>  
>  				TAILQ_REMOVE(&vq->zmbuf_list, zmbuf, next);
[...]