[dpdk-stable] [dpdk-dev] [PATCH v5] eal: fix create user mem map repeatedly when it exists

[Thomas Monjalon]

10/04/2021 11:37, wangyunjian:
> From: Yunjian Wang <wangyunjian at huawei.com>
> 
> Currently, new user mem maps are checked if they are adjacent to
> an existing mem map and if so, the mem map entries are merged.
> 
> It doesn't check for duplicate mem maps, so if the API is called

As Kevin suggested, it should be in the past tense: "didn't".

> with the same mem map multiple times, they will occupy multiple
> mem map entries. This will reduce the amount of entries available
> for unique mem maps.
> 
> So check for duplicate mem maps and merge them into one mem map
> entry if any found.
> 
> Fixes: 0cbce3a167f1 ("vfio: skip DMA map failure if already mapped")
> Cc: stable at dpdk.org
> 
> Suggested-by: Kevin Traynor <ktraynor at redhat.com>
> Signed-off-by: Yunjian Wang <wangyunjian at huawei.com>
> Acked-by: Anatoly Burakov <anatoly.burakov at intel.com>

Applied, thanks.