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From: Slava Ovsiienko <viacheslavo@nvidia.com>
To: "Jiawei(Jonny) Wang" <jiaweiw@nvidia.com>,
	Matan Azrad <matan@nvidia.com>,
	 Shahaf Shuler <shahafs@nvidia.com>, Ori Kam <orika@nvidia.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>,
	Raslan Darawsheh <rasland@nvidia.com>,
	"stable@dpdk.org" <stable@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] common/mlx5: free MR resource while device DMA unmap
Date: Wed, 28 Oct 2020 13:16:32 +0000	[thread overview]
Message-ID: <MWHPR12MB1501312B4A912F8F69B495D6DF170@MWHPR12MB1501.namprd12.prod.outlook.com> (raw)
In-Reply-To: <1603890862-361416-1-git-send-email-jiaweiw@nvidia.com>

> -----Original Message-----
> From: Jiawei Wang <jiaweiw@nvidia.com>
> Sent: Wednesday, October 28, 2020 15:14
> To: Slava Ovsiienko <viacheslavo@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Shahaf Shuler <shahafs@nvidia.com>; Ori Kam
> <orika@nvidia.com>
> Cc: dev@dpdk.org; Raslan Darawsheh <rasland@nvidia.com>; stable@dpdk.org
> Subject: [PATCH] common/mlx5: free MR resource while device DMA unmap
> mlx5 PMD created the MR (Memory Region) resource on the mlx5_dma_map
> call to make the memory available for DMA operations. On the
> mlx5_dma_unmap call the MR resource was not freed but inserted to MR Free
> list for further garbage collection.
> Actual MR resource destroying happened on device stop call. That caused the
> runtime out of memory in case of application performed multiple DMA
> map/unmap calls.
> The fix immediately frees the MR resource on mlx5_dma_unmap call not
> engaging the list. The export for mlx5_mr_free function from common PMD
> part is added as well.
> Redmine: 2330226
> Fixes: 989e999d9305 ("net/mlx5: support PCI device DMA map and unmap")
> Cc: stable@dpdk.org
> Signed-off-by: Jiawei Wang <jiaweiw@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>

  reply	other threads:[~2020-10-28 13:16 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-28 13:14 Jiawei Wang
2020-10-28 13:16 ` Slava Ovsiienko [this message]
2020-11-02  2:22 ` [dpdk-dev] [PATCH v2] " Jiawei Wang
2020-11-05 13:25   ` Raslan Darawsheh

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