On 3/7/2016 2:35 PM, Yuanhan Liu wrote: > 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".
uint16_t idx = vq->avail->ring[avail_idx & (vq->size - 1)] the idx retrieved from avail->ring. > > --yliu >
