linux-kernel - Re: [RFC PATCH 00/15] Provide atomics and bitops implemented with ISO C++11 atomics

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]

Date:	Wed, 18 May 2016 20:05:58 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	David Howells <dhowells@...hat.com>
Cc:	linux-arch@...r.kernel.org, x86@...nel.org, will.deacon@....com,
	linux-kernel@...r.kernel.org, ramana.radhakrishnan@....com,
	paulmck@...ux.vnet.ibm.com, dwmw2@...radead.org
Subject: Re: [RFC PATCH 00/15] Provide atomics and bitops implemented with
 ISO C++11 atomics

On Wed, May 18, 2016 at 04:10:37PM +0100, David Howells wrote:
>  (1) We could weaken the kernel memory model to for the benefit of arches
>      that have instructions that employ explicit acquire/release barriers -
>      but that may cause data races to occur based on assumptions we've
>      already made.  Note, however, that powerpc already seems to have a
>      weaker memory model.

Linus always vehemently argues against weakening our memory model.