Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 12 Nov 2001 16:59:44 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 12 Nov 2001 16:59:33 -0500 Received: from adsl-63-194-239-202.dsl.lsan03.pacbell.net ([63.194.239.202]:2300 "EHLO mmp-linux.matchmail.com") by vger.kernel.org with ESMTP id ; Mon, 12 Nov 2001 16:59:18 -0500 Date: Mon, 12 Nov 2001 13:59:12 -0800 From: Mike Fedyk To: James Bottomley Cc: Christopher Friesen , linux-kernel@vger.kernel.org Subject: Re: how is processor cache coherency maintained for device drivers Message-ID: <20011112135912.A32099@mikef-linux.matchmail.com> Mail-Followup-To: James Bottomley , Christopher Friesen , linux-kernel@vger.kernel.org In-Reply-To: <200111111655.fABGtr610172@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200111111655.fABGtr610172@localhost.localdomain> User-Agent: Mutt/1.3.23i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Nov 11, 2001 at 08:55:52AM -0800, James Bottomley wrote: > I believe (although you should take better advice from the PPC people) that > the powerpc is completely cache coherent, so any coherency problems you may be > having would be due to the hardware, not the kernel. > IIRC (probably wrong though) the PPC is not coherent for one of its caches, but is for another. PPC people would definately know the details, I'm just thinking of a thread I read on this a few weeks ago... Mike - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/