linux-kernel - Re: [PATCH 0/1] RDMA/mlx5: align MR mem allocation size to power-of-two

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <168916382400.1207710.3116190060320574787.b4-ty@kernel.org>
Date:   Wed, 12 Jul 2023 15:10:24 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     jgg@...pe.ca, Yuanyuan Zhong <yzhong@...estorage.com>
Cc:     cachen@...estorage.com, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/1] RDMA/mlx5: align MR mem allocation size to power-of-two


On Thu, 29 Jun 2023 15:32:47 -0600, Yuanyuan Zhong wrote:
> Recently I noticed the mlx5_alloc_priv_descs() do many allocations from
> kmalloc-8k. It's called from following chain:
> cma_cm_event_handler => nvme_rdma_cm_handler => nvme_rdma_create_queue_ib
> => ib_mr_pool_init => ib_alloc_mr => __mlx5_ib_alloc_mr
> => _mlx5_alloc_mkey_descs
> 
> When the nvme-rdma asks to allocate memory regions that support maximum 257
> sg entries, the real MR memory allocation size is slightly bigger than 2048.
> 
> [...]

Applied, thanks!

[1/1] RDMA/mlx5: align MR mem allocation size to power-of-two
      https://git.kernel.org/rdma/rdma/c/52b4bdd28c861e

Best regards,
-- 
Leon Romanovsky <leon@...nel.org>