linux-kernel - Re: [PATCH] Revert "powerpc/32s: reorder Linux PTE bits to better match Hash PTE bits."

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]

Date:   Fri, 29 May 2020 00:04:40 +1000 (AEST)
From:   Michael Ellerman <patch-notifications@...erman.id.au>
To:     Michael Ellerman <mpe@...erman.id.au>,
        Christophe Leroy <christophe.leroy@...roup.eu>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Rui Salvaterra <rsalvaterra@...il.com>,
        Paul Mackerras <paulus@...ba.org>
Cc:     linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH] Revert "powerpc/32s: reorder Linux PTE bits to better match Hash PTE bits."

On Wed, 20 May 2020 10:23:45 +0000 (UTC), Christophe Leroy wrote:
> This reverts commit 697ece78f8f749aeea40f2711389901f0974017a.
> 
> The implementation of SWAP on powerpc requires page protection
> bits to not be one of the least significant PTE bits.
> 
> Until the SWAP implementation is changed and this requirement voids,
> we have to keep at least _PAGE_RW outside of the 3 last bits.
> 
> [...]

Applied to powerpc/fixes.

[1/1] Revert "powerpc/32s: reorder Linux PTE bits to better match Hash PTE bits."
      https://git.kernel.org/powerpc/c/40bb0e904212cf7d6f041a98c58c8341b2016670

cheers