linux-kernel - Re: [PATCH 1/3] powerpc/modules: Load modules closer to kernel text

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: <161880478975.1398509.1364784415611338894.b4-ty@ellerman.id.au>
Date:   Mon, 19 Apr 2021 13:59:49 +1000
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Paul Mackerras <paulus@...ba.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        jniethe5@...il.com, Christophe Leroy <christophe.leroy@...roup.eu>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] powerpc/modules: Load modules closer to kernel text

On Thu, 1 Apr 2021 13:30:41 +0000 (UTC), Christophe Leroy wrote:
> On book3s/32, when STRICT_KERNEL_RWX is selected, modules are
> allocated on the segment just before kernel text, ie on the
> 0xb0000000-0xbfffffff when PAGE_OFFSET is 0xc0000000.
> 
> On the 8xx, TASK_SIZE is 0x80000000. The space between TASK_SIZE and
> PAGE_OFFSET is not used and could be used for modules.
> 
> [...]

Applied to powerpc/next.

[1/3] powerpc/modules: Load modules closer to kernel text
      https://git.kernel.org/powerpc/c/2ec13df167040cd153c25c4d96d0ffc573ac4c40
[2/3] powerpc/8xx: Define a MODULE area below kernel text
      https://git.kernel.org/powerpc/c/9132a2e82adc6e5a1c7c7385df3bfb25576bdd80
[3/3] powerpc/32s: Define a MODULE area below kernel text all the time
      https://git.kernel.org/powerpc/c/80edc68e0479bafdc4869ec3351e42316b824596

cheers