From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965517AbXAYPfl (ORCPT ); Thu, 25 Jan 2007 10:35:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965516AbXAYPfl (ORCPT ); Thu, 25 Jan 2007 10:35:41 -0500 Received: from stout.engsoc.carleton.ca ([134.117.69.22]:40118 "EHLO stout.engsoc.carleton.ca" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965482AbXAYPfk (ORCPT ); Thu, 25 Jan 2007 10:35:40 -0500 Date: Thu, 25 Jan 2007 10:35:10 -0500 From: Kyle McMartin To: Seetharam Dharmosoth Cc: Randy Dunlap , linux-kernel@vger.kernel.org Subject: Re: que: How can we Eliminate the DMA Zone from the kernel? Message-ID: <20070125153510.GA13938@athena.road.mcmartin.ca> References: <161367.39134.qm@web7706.mail.in.yahoo.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <161367.39134.qm@web7706.mail.in.yahoo.com> User-Agent: Mutt/1.5.13 (2006-08-11) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Jan 25, 2007 at 12:56:30PM +0000, Seetharam Dharmosoth wrote: > Hi, > > Want to remove DMA zone the from the Linux Kernel. > (Don't want to use DMA Zone, because i am not > using ISA bus, am using PCI bus. So, I don't need > this) > Just because you don't need ISA, doesn't mean you don't need ZONE_DMA. Various PCI cards have limitations on what addresses they can DMA to (24 bits on some old PCI sound cards iirc, and more recently a 30 bit DMA limitation on some Broadcom networking equipment.)