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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: Xueming Li <xuemingl@nvidia.com>, dev@dpdk.org
Cc: stable@dpdk.org, Matan Azrad <matan@nvidia.com>,
	Viacheslav Ovsiienko <viacheslavo@nvidia.com>
Subject: Re: [dpdk-dev] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start
Date: Thu, 21 Oct 2021 11:40:05 +0200	[thread overview]
Message-ID: <de009598-b124-c026-1cd8-a76442ce0d65@redhat.com> (raw)
In-Reply-To: <20211015150545.1673312-1-xuemingl@nvidia.com>



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@dpdk.org
> 
> Signed-off-by: Xueming Li <xuemingl@nvidia.com>
> Reviewed-by: Matan Azrad <matan@nvidia.com>
> ---
>   drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 4 ++++
>   1 file changed, 4 insertions(+)
> 

Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

Thanks,
Maxime


  parent reply	other threads:[~2021-10-21  9:40 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-09-23  8:17 [dpdk-dev] [PATCH 1/2] vdpa/mlx5: workaround FW first completion in start Xueming Li
2021-09-23  8:17 ` [dpdk-dev] [PATCH 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-13 10:06   ` Maxime Coquelin
2021-10-13 10:14     ` Xueming(Steven) Li
2021-10-13  9:55 ` [dpdk-dev] [PATCH 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-15 13:43 ` [dpdk-dev] [PATCH v1 " Xueming Li
2021-10-15 13:43   ` [dpdk-dev] [PATCH v1 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-15 13:57   ` [dpdk-dev] [PATCH v1 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-15 14:51     ` Xueming(Steven) Li
2021-10-15 15:05 ` [dpdk-dev] [PATCH v2 " Xueming Li
2021-10-15 15:05   ` [dpdk-dev] [PATCH v2 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-21  9:40     ` Maxime Coquelin
2021-10-21 12:27     ` Maxime Coquelin
2021-10-21  9:40   ` Maxime Coquelin [this message]
2021-10-21 12:27   ` [dpdk-dev] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-21 12:36     ` Xueming(Steven) Li

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