From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Sun, 20 May 2001 21:59:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Sun, 20 May 2001 21:58:56 -0400 Received: from are.twiddle.net ([64.81.246.98]:14598 "EHLO are.twiddle.net") by vger.kernel.org with ESMTP id ; Sun, 20 May 2001 21:58:39 -0400 Date: Sun, 20 May 2001 18:58:21 -0700 From: Richard Henderson To: "David S. Miller" Cc: Andrea Arcangeli , Andrew Morton , Ivan Kokshaysky , linux-kernel@vger.kernel.org Subject: Re: alpha iommu fixes Message-ID: <20010520185821.B19096@twiddle.net> Mail-Followup-To: "David S. Miller" , Andrea Arcangeli , Andrew Morton , Ivan Kokshaysky , linux-kernel@vger.kernel.org In-Reply-To: <20010518214617.A701@jurassic.park.msu.ru> <20010519155502.A16482@athlon.random> <20010519231131.A2840@jurassic.park.msu.ru> <20010520044013.A18119@athlon.random> <3B07AF49.5A85205F@uow.edu.au> <20010520154958.E18119@athlon.random> <20010520181803.I18119@athlon.random> <15112.26992.591864.905111@pizda.ninka.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <15112.26992.591864.905111@pizda.ninka.net>; from davem@redhat.com on Sun, May 20, 2001 at 06:03:44PM -0700 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, May 20, 2001 at 06:03:44PM -0700, David S. Miller wrote: > But for the time being, everyone assumes address zero is not valid and > it shouldn't be too painful to reserve the first page of DMA space > until we fix this issue. Indeed, virtually all PCI systems have legacy PeeCee compatibility crap handing out in low i/o memory, and we don't use the first megabyte or so. r~