Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261875AbTJACIa (ORCPT ); Tue, 30 Sep 2003 22:08:30 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261877AbTJACIa (ORCPT ); Tue, 30 Sep 2003 22:08:30 -0400 Received: from adsl-63-194-239-202.dsl.lsan03.pacbell.net ([63.194.239.202]:26386 "EHLO mmp-linux.matchmail.com") by vger.kernel.org with ESMTP id S261875AbTJACI3 (ORCPT ); Tue, 30 Sep 2003 22:08:29 -0400 Date: Tue, 30 Sep 2003 19:08:45 -0700 From: Mike Fedyk To: "Nakajima, Jun" Cc: Andrew Morton , Jamie Lokier , davej@redhat.com, torvalds@osdl.org, linux-kernel@vger.kernel.org, richard.brunner@amd.com Subject: Re: [PATCH] Mutilated form of Andi Kleen's AMD prefetch errata patch Message-ID: <20031001020845.GA13051@matchmail.com> Mail-Followup-To: "Nakajima, Jun" , Andrew Morton , Jamie Lokier , davej@redhat.com, torvalds@osdl.org, linux-kernel@vger.kernel.org, richard.brunner@amd.com References: <7F740D512C7C1046AB53446D3720017304AFCD@scsmsx402.sc.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <7F740D512C7C1046AB53446D3720017304AFCD@scsmsx402.sc.intel.com> User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Sep 30, 2003 at 06:54:06PM -0700, Nakajima, Jun wrote: > > I think we should fix up userspace. > What do you mean by this? Patch user code at runtime (it's much more > complex than it sounds) or remove prefetch instructions from userspace? No, just make sure that userspace doesn't see the exceptions that the errata will produce in obscure cases. It is all explained in several threads about this. Search for "Andi Kleen" and "prefetch". - 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/