Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262838AbTKRNso (ORCPT ); Tue, 18 Nov 2003 08:48:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262746AbTKRNms (ORCPT ); Tue, 18 Nov 2003 08:42:48 -0500 Received: from ns.suse.de ([195.135.220.2]:1746 "EHLO Cantor.suse.de") by vger.kernel.org with ESMTP id S262747AbTKRNmU (ORCPT ); Tue, 18 Nov 2003 08:42:20 -0500 To: Zwane Mwaikambo Cc: linux-kernel@vger.kernel.org Subject: Re: FEATURE REQUEST: Specific Processor Optimizations on x86 Architecture References: From: Andi Kleen Date: 27 Oct 2003 22:15:06 +0100 In-Reply-To: Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 717 Lines: 15 Zwane Mwaikambo writes: > On Mon, 27 Oct 2003, Andi Kleen wrote: > > > The wmb() change is not needed, unless you have an oostore CPU > > (x86 has ordered writes by default). It probably does not hurt > > neither though (I do it the same way on x86-64), but also doesn't > > change anything. > > The original intent was to fix an SMP P5 system, it oopses otherwise under > load. That doesn't make any sense. P5 doesn't support SFENCE. -Andi - 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/