From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752094AbXCYTmL (ORCPT ); Sun, 25 Mar 2007 15:42:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752201AbXCYTmL (ORCPT ); Sun, 25 Mar 2007 15:42:11 -0400 Received: from www.osadl.org ([213.239.205.134]:51913 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752195AbXCYTmK (ORCPT ); Sun, 25 Mar 2007 15:42:10 -0400 Subject: Re: [BUG] __copy_to_user_inatomic broken on non Pentium machines From: Thomas Gleixner To: Linus Torvalds Cc: LKML , Stable Kernel Team , Ingo Molnar , Andrew Morton , Adrian Bunk In-Reply-To: References: <1174810024.10840.477.camel@localhost.localdomain> Content-Type: text/plain Date: Sun, 25 Mar 2007 21:41:11 +0200 Message-Id: <1174851671.3892.2.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.8.3 (2.8.3-1.fc6) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2007-03-25 at 11:14 -0700, Linus Torvalds 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 ;) Yes, it's a genuine i386 embedded system and AFAIK the same feature is available on 486 clones. i386 and Co are still in used in the embedded space. tglx