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From: Thomas Monjalon <thomas@monjalon.net>
To: Yunjian Wang <wangyunjian@huawei.com>
Cc: dev@dpdk.org, david.marchand@redhat.com,
	anatoly.burakov@intel.com, jerry.lilijun@huawei.com,
	xudingke@huawei.com, stable@dpdk.org, bruce.richardson@intel.com,
	john.mcnamara@intel.com, ktraynor@redhat.com
Subject: Re: [dpdk-dev] [PATCH v4] eal: fix create user mem map repeatedly when it exists
Date: Thu, 25 Mar 2021 15:30:16 +0100
Message-ID: <5596810.E6CI0FCbXo@thomas> (raw)
In-Reply-To: <1607339329-624-1-git-send-email-wangyunjian@huawei.com>

07/12/2020 12:08, wangyunjian:
> From: Yunjian Wang <wangyunjian@huawei.com>
> 
> Currently, user mem maps will check if the newly mapped area is adjacent
> to any existing mapping, but will not check if the mapping is identical
> because it assumes that the API will never get called with the same
> mapping twice. This will result in duplicate entries in the user mem
> maps list.
> 
> Fix it by also checking for duplicate mappings, and skipping them if
> they are found.

Sorry, that's still difficult to read,
and it is not clear what is the impact of the bug.

+Cc some english native speakers for help.

> Fixes: 0cbce3a167f1 ("vfio: skip DMA map failure if already mapped")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>




  parent reply	other threads:[~2021-03-25 14:30 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-16 13:38 [dpdk-dev] [PATCH 1/1] eal/linux: do not " wangyunjian
2020-07-17 14:19 ` Burakov, Anatoly
2020-07-17 14:23   ` Burakov, Anatoly
2020-07-20  2:00     ` wangyunjian
2020-07-20 11:46       ` Burakov, Anatoly
2020-07-22 12:47         ` wangyunjian
2020-07-23 14:48 ` [dpdk-dev] [PATCH v2] " wangyunjian
2020-07-24 13:25   ` Burakov, Anatoly
2020-07-25  9:59     ` wangyunjian
2020-07-27  9:24       ` Burakov, Anatoly
2020-07-30 13:16         ` wangyunjian
2020-07-31 11:55           ` Burakov, Anatoly
2020-08-05 12:58             ` wangyunjian
2020-09-17 11:33               ` Burakov, Anatoly
2020-09-17 11:35   ` Burakov, Anatoly
2020-10-15 12:46     ` wangyunjian
2020-10-15 12:54       ` David Marchand
2020-10-16  9:48         ` wangyunjian
2020-10-16  9:28   ` [dpdk-dev] [PATCH v3] eal: fix " wangyunjian
2020-10-20 14:09     ` Thomas Monjalon
2020-11-15 14:23       ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon
2020-11-22 18:20         ` Thomas Monjalon
2020-11-23  7:40           ` wangyunjian
2020-11-27 12:54       ` [dpdk-dev] " Burakov, Anatoly
2020-12-07 11:08     ` [dpdk-dev] [PATCH v4] " wangyunjian
2021-03-25 13:38       ` wangyunjian
2021-03-25 14:30       ` Thomas Monjalon [this message]
2021-03-25 16:45         ` Kevin Traynor
2021-04-10  9:37     ` [dpdk-dev] [PATCH v5] " wangyunjian
2021-04-19 11:47       ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon

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