linux-kernel - Re: [PATCH RFC 1/2] RDMA/rxe: don't allow registering !PAGE

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

Message-ID: <adad4ee6-ceef-4e45-a13d-048a1377e86f@acm.org>
Date:   Fri, 27 Oct 2023 14:46:14 -0700
From:   Bart Van Assche <bvanassche@....org>
To:     Zhu Yanjun <yanjun.zhu@...ux.dev>,
        Li Zhijian <lizhijian@...itsu.com>, zyjzyj2000@...il.com,
        jgg@...pe.ca, leon@...nel.org, linux-rdma@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, rpearsonhpe@...il.com,
        matsuda-daisuke@...itsu.com
Subject: Re: [PATCH RFC 1/2] RDMA/rxe: don't allow registering !PAGE_SIZE mr

On 10/27/23 01:17, Zhu Yanjun wrote:
> When ULP uses folio or compound page, ULP can not work well with RXE 
> after this commit is applied.

Isn't it the responsibility of the DMA mapping code to build an sg-list
for folios? Drivers like ib_srp see an sg-list, whether that comes from
a folio or from something else.

Bart.