Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753591Ab0ARKWK (ORCPT ); Mon, 18 Jan 2010 05:22:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752261Ab0ARKWI (ORCPT ); Mon, 18 Jan 2010 05:22:08 -0500 Received: from one.firstfloor.org ([213.235.205.2]:60216 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751661Ab0ARKWI (ORCPT ); Mon, 18 Jan 2010 05:22:08 -0500 To: Arjan van de Ven Cc: Felix Rubinstein , linux-kernel@vger.kernel.org Subject: Re: /dev/mem implementation From: Andi Kleen References: <20100117094043.0483ee1a@infradead.org> Date: Mon, 18 Jan 2010 11:22:04 +0100 In-Reply-To: <20100117094043.0483ee1a@infradead.org> (Arjan van de Ven's message of "Sun, 17 Jan 2010 09:40:43 -0800") Message-ID: <87hbqj4ss3.fsf@basil.nowhere.org> User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 710 Lines: 19 Arjan van de Ven writes: > > If you feel that you have a valid use case where you really want do > muck with such memory, it might be a good idea to explain that > usecase.... To add to it this only applies to uncacheable pages which don't use MTRRs. Unless in some special situations (e.g. a lot of GPU 3d data active) that situation tends to be rare and not apply to most memory. -Andi -- ak@linux.intel.com -- Speaking for myself only. -- 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/