From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S264984AbUHRLOy (ORCPT ); Wed, 18 Aug 2004 07:14:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265317AbUHRLOy (ORCPT ); Wed, 18 Aug 2004 07:14:54 -0400 Received: from mail.humboldt.co.uk ([81.2.65.18]:26562 "EHLO mail.humboldt.co.uk") by vger.kernel.org with ESMTP id S264984AbUHRLOw (ORCPT ); Wed, 18 Aug 2004 07:14:52 -0400 Subject: Re: [PATCH][2.4.27] PowerPC 745x data corruption bug fix From: Adrian Cox To: Tom Rini Cc: Mikael Pettersson , linux-kernel@vger.kernel.org, linuxppc-dev@lists.linuxppc.org, paulus@samba.org In-Reply-To: <20040816170534.GA7303@smtp.west.cox.net> References: <200408161004.i7GA48fY002331@harpo.it.uu.se> <20040816170534.GA7303@smtp.west.cox.net> Content-Type: text/plain Message-Id: <1092827448.10314.10.camel@localhost> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Wed, 18 Aug 2004 12:10:48 +0100 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2004-08-16 at 18:05, Tom Rini wrote: > On Mon, Aug 16, 2004 at 12:04:08PM +0200, Mikael Pettersson wrote: > > So previously a CPU got _PAGE_COHERENT on SMP. > > Now a CPU gets _PAGE_COHERENT on (SMP || 745x). > > > > I suspect the CONFIG_MPC10X_BRIDGE is an attempt to enable > > the fix in some other cases too. > > The reason CPU_FTR_NEED_COHERENT was added was to work around an MPC107 > (now Tsi107) errata. See > http://216.239.57.104/search?q=cache:1MDn1X8ieUUJ:www.geocrawler.com/archives/3/8358/2002/9/100/9559482/+%22Adrian+Cox%22+errata&hl=en > (original is conn refused right now). I've now written some notes to explain these issues, in case it comes up again: http://www.humboldt.co.uk/Notes/mpc107cache.html - Adrian Cox Humboldt Solutions Ltd.