Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754125AbZDVWza (ORCPT ); Wed, 22 Apr 2009 18:55:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751542AbZDVWzR (ORCPT ); Wed, 22 Apr 2009 18:55:17 -0400 Received: from earthlight.etchedpixels.co.uk ([81.2.110.250]:41578 "EHLO www.etchedpixels.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751126AbZDVWzQ (ORCPT ); Wed, 22 Apr 2009 18:55:16 -0400 Date: Wed, 22 Apr 2009 23:53:58 +0100 From: Alan Cox To: Mathieu Desnoyers Cc: akpm@linux-foundation.org, Ingo Molnar , linux-kernel@vger.kernel.org, mark.langsdorf@amd.com, arekm@maven.pl, "H. Peter Anvin" , Andi Kleen , Avi Kivity Subject: Re: [patch 2/2] x86 amd fix cmpxchg read acquire barrier Message-ID: <20090422235358.0e0cc7f3@lxorguk.ukuu.org.uk> In-Reply-To: <20090422224749.GA22718@Krystal> References: <20090422201852.092307236@polymtl.ca> <20090422202453.829846363@polymtl.ca> <20090422215913.67c1298e@lxorguk.ukuu.org.uk> <20090422224749.GA22718@Krystal> X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 574 Lines: 17 > Good point. I should probably configure this as "nothing" unless > > #ifdef CONFIG_X86_64 > #if (defined(CONFIG_GENERIC_CPU) || defined(CONFIG_MK8)) > ... > #endif > #endif Is the erratum only present in 64bit mode ? Really this needs someone with knowledge of the erratum to characterise it accurately and the workarounds. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/