From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752009AbXCYSbg (ORCPT ); Sun, 25 Mar 2007 14:31:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752016AbXCYSbg (ORCPT ); Sun, 25 Mar 2007 14:31:36 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:35392 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752009AbXCYSbe (ORCPT ); Sun, 25 Mar 2007 14:31:34 -0400 Date: Sun, 25 Mar 2007 20:30:10 +0200 From: Ingo Molnar To: Linus Torvalds Cc: Thomas Gleixner , LKML , Stable Kernel Team , Andrew Morton , Adrian Bunk Subject: Re: [BUG] __copy_to_user_inatomic broken on non Pentium machines Message-ID: <20070325183010.GA12676@elte.hu> References: <1174810024.10840.477.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.2i X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -2.0 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-2.0 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.1.7 -2.0 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org * Linus Torvalds wrote: > On Sun, 25 Mar 2007, Thomas Gleixner wrote: > > > > Environment: Pre Pentium systems, (boot_cpu_data.wp_works_ok == 0) > > This shouldn't be "pre-pentium", afaik. WP-works-ok on i486 too. I > think only the original i386 had this bug ("feature"). > > But I agree, it does seem to be broken on such machines (I assume you > don't actually have one, but just tested by forcing it by hand ;) actually, AFAIK this is a genuine i386 box Thomas has (an embedded board). Our hardware legacies and the resulting dependencies _really_ stick around for quite long time :-/ Ingo