From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757985AbZEVSX7 (ORCPT ); Fri, 22 May 2009 14:23:59 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753419AbZEVSXw (ORCPT ); Fri, 22 May 2009 14:23:52 -0400 Received: from one.firstfloor.org ([213.235.205.2]:46274 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751729AbZEVSXw (ORCPT ); Fri, 22 May 2009 14:23:52 -0400 To: lkml@MoreThan.org Cc: linux-kernel@vger.kernel.org Subject: Re: [BUG FIX] Make x86_32 uni-processor Atomic ops, Atomic From: Andi Kleen References: <200905221139.26941.lkml@morethan.org> Date: Fri, 22 May 2009 20:23:48 +0200 In-Reply-To: <200905221139.26941.lkml@morethan.org> (Michael S. Zick's message of "Fri, 22 May 2009 11:39:24 -0500") Message-ID: <87hbzdngi3.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org "Michael S. Zick" writes: > Found in the bit-rot for 32-bit, x86, Uni-processor builds: Actually uni processor should not use the lock prefix because it doesn't need it; the only exception are some special ops used in para-virtualization which are special cased. -Andi -- ak@linux.intel.com -- Speaking for myself only.