From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Thu, 20 Jan 2005 14:34:20 +0000 (GMT) Received: from pD95620DD.dip.t-dialin.net ([IPv6:::ffff:217.86.32.221]:52542 "EHLO mail.linux-mips.net") by linux-mips.org with ESMTP id ; Thu, 20 Jan 2005 14:34:15 +0000 Received: from fluff.linux-mips.net (localhost.localdomain [127.0.0.1]) by mail.linux-mips.net (8.13.1/8.13.1) with ESMTP id j0KEYEx4004546; Thu, 20 Jan 2005 15:34:14 +0100 Received: (from ralf@localhost) by fluff.linux-mips.net (8.13.1/8.13.1/Submit) id j0KEYE0C004545; Thu, 20 Jan 2005 15:34:14 +0100 Date: Thu, 20 Jan 2005 15:34:14 +0100 From: Ralf Baechle To: "Maciej W. Rozycki" Cc: moreau francis , linux-mips@linux-mips.org Subject: Re: dcache issue... Message-ID: <20050120143414.GB3684@linux-mips.org> References: <20050120140025.96779.qmail@web25101.mail.ukl.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.1i Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 6962 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ralf@linux-mips.org Precedence: bulk X-list: linux-mips On Thu, Jan 20, 2005 at 02:18:00PM +0000, Maciej W. Rozycki wrote: > > > Live is tough, use caches ;-) > > > > oh yes it is. But I would only understand what was > > my problem using the mixed cache modes... > > Note that ll/sc sequences don't work as expected on uncached memory, so > atomic accesses are not going to work in the kernel memory in your > configuration. This may cause arbitrary corruptions due to an > inconsistent state of the kernel. Uniprocessor systems are usually get away with it but it's not something real software should rely on. Ralf