patches for DPDK stable branches
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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-stable] [PATCH v2 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart
Date: Thu, 21 Oct 2021 14:27:26 +0200	[thread overview]
Message-ID: <5cf3ad7d-0210-1fe9-b852-4cc81aedc772@redhat.com> (raw)
In-Reply-To: <20211015150545.1673312-2-xuemingl@nvidia.com>



On 10/15/21 17:05, Xueming Li wrote:
> VAR is the device memory space for the virtio queues doorbells, qemu
> could mmap it to directly to speed up doorbell push.
> 
> On a busy system, Qemu takes time to release VAR resources during driver
> shutdown. If vdpa restarted quickly, the VAR allocation failed with
> error 28 since the VAR is singleton resource per device.
> 
> This patch adds retry mechanism for VAR allocation.
> 
> Fixes: 4cae722c1b06 ("vdpa/mlx5: move virtual doorbell alloc to probe")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Xueming Li <xuemingl@nvidia.com>
> Reviewed-by: Matan Azrad <matan@nvidia.com>
> ---
>   drivers/vdpa/mlx5/mlx5_vdpa.c | 9 ++++++++-
>   1 file changed, 8 insertions(+), 1 deletion(-)


Applied to dpdk-next-virtio/main.

Thanks,
Maxime


  parent reply	other threads:[~2021-10-21 12:27 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20210923081758.178745-1-xuemingl@nvidia.com>
2021-10-15 13:43 ` [dpdk-stable] [PATCH v1 1/2] vdpa/mlx5: workaround FW first completion in start Xueming Li
2021-10-15 13:43   ` [dpdk-stable] [PATCH v1 2/2] vdpa/mlx5: retry VAR allocation during vDPA restart Xueming Li
2021-10-15 13:57   ` [dpdk-stable] [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-stable] [PATCH v2 " Xueming Li
2021-10-15 15:05   ` [dpdk-stable] [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 [this message]
2021-10-21  9:40   ` [dpdk-stable] [PATCH v2 1/2] vdpa/mlx5: workaround FW first completion in start Maxime Coquelin
2021-10-21 12:27   ` Maxime Coquelin
2021-10-21 12:36     ` Xueming(Steven) Li

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