On Mon, Mar 07, 2016 at 06:22:25AM +0000, Xie, Huawei wrote: > On 2/18/2016 9:48 PM, Yuanhan Liu wrote: > > + uint16_t idx = vq->avail->ring[avail_idx & (vq->size - 1)]; > > + uint32_t vec_id = *vec_idx; > > + uint32_t len = *allocated; > > > There is bug not using volatile to retrieve the avail idx.
avail_idx? This is actually from "vq->last_used_idx_res". --yliu