Re: [PATCH v1] vdpa/mlx5: Use write memory barrier after updating CQ index

On 2020/12/9 下午10:00, Eli Cohen wrote: Make sure to put dma write memory barrier after updating CQ consumer index so the hardware knows that there are available CQE slots in the queue. Failure to do this can cause the update of the RX doorbell record to get updated before the CQ consumer index

[PATCH v1] vdpa/mlx5: Use write memory barrier after updating CQ index

Make sure to put dma write memory barrier after updating CQ consumer index so the hardware knows that there are available CQE slots in the queue. Failure to do this can cause the update of the RX doorbell record to get updated before the CQ consumer index resulting in CQ overrun. Fixes: 1a86b377a