[dpdk-stable] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start

[Maxime Coquelin]

On 10/15/21 17:05, Xueming Li wrote:
> After a vDPA application restart, qemu restores VQ with used and
> available index, new incoming packet triggers virtio driver to
> handle buffers. Under heavy traffic, no available buffer for
> firmware to receive new packets, no Rx interrupts generated,
> driver is stuck on endless interrupt waiting.
> 
> As a firmware workaround, this patch sends a notification after
> VQ setup to ask driver handling buffers and filling new buffers.
> 
> Fixes: bff735011078 ("vdpa/mlx5: prepare virtio queues")
> Cc: stable at dpdk.org
> 
> Signed-off-by: Xueming Li <xuemingl at nvidia.com>
> Reviewed-by: Matan Azrad <matan at nvidia.com>
> ---
>   drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 


Applied to dpdk-next-virtio/main.

Thanks,
Maxime