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From: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
To: akpm@linux-foundation.org, Ingo Molnar <mingo@elte.hu>,
	linux-kernel@vger.kernel.org
Subject: [patch 0/2] Fixing AMD cmpxchg "missing lfence" mess
Date: Wed, 22 Apr 2009 16:18:52 -0400	[thread overview]
Message-ID: <20090422201852.092307236@polymtl.ca> (raw)

Hi,

I've prepared this patch, which applies on 2.6.30-rc2. It's an attempt to make
the kernel work around AMD's bug regarding missing lfence in the sync; cmpxchg
instruction.

The first patch is a alternative.h cleanup, and the second patch implements the
fixup using alternatives.

Indeed, this only makes the kernel aware of the bug. Userland will still have to
be taught to use such lfence too.

Mathieu

-- 
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68

             reply	other threads:[~2009-04-22 20:48 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-04-22 20:18 Mathieu Desnoyers [this message]
2009-04-22 20:18 ` [patch 1/2] x86: cleanup alternative.h Mathieu Desnoyers
2009-04-28 13:05   ` [GIT PULL] " Mathieu Desnoyers
2009-04-28 14:58     ` Ingo Molnar
2009-04-28 15:13       ` [GIT PULL] x86: cleanup alternative.h (v2) Mathieu Desnoyers
2009-04-29  6:17         ` [tip:x86/asm] x86: clean up alternative.h tip-bot for Mathieu Desnoyers
2009-04-29  6:22           ` Mathieu Desnoyers
2009-04-28 17:40       ` [GIT PULL] x86: cleanup alternative.h H. Peter Anvin
2009-04-28 18:11         ` Mathieu Desnoyers
2009-04-28 18:13         ` [GIT PULL] x86: cleanup alternative.h (v3) Mathieu Desnoyers
2009-04-22 20:18 ` [patch 2/2] x86 amd fix cmpxchg read acquire barrier Mathieu Desnoyers
2009-04-22 20:59   ` Alan Cox
2009-04-22 22:47     ` Mathieu Desnoyers
2009-04-22 22:53       ` Alan Cox
2009-04-22 23:26         ` Mathieu Desnoyers
2009-04-23  8:06   ` Ingo Molnar
2009-04-23 13:19     ` Mathieu Desnoyers
2009-04-23 13:41       ` Arkadiusz Miskiewicz
2009-04-23 22:17         ` Mathieu Desnoyers
2009-04-25  8:19   ` Pavel Machek
2009-05-02 15:55     ` Mathieu Desnoyers

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