From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932884AbWFMEtk (ORCPT ); Tue, 13 Jun 2006 00:49:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932882AbWFMEtk (ORCPT ); Tue, 13 Jun 2006 00:49:40 -0400 Received: from dsl027-180-168.sfo1.dsl.speakeasy.net ([216.27.180.168]:63129 "EHLO sunset.davemloft.net") by vger.kernel.org with ESMTP id S932879AbWFMEtj (ORCPT ); Tue, 13 Jun 2006 00:49:39 -0400 Date: Mon, 12 Jun 2006 21:49:48 -0700 (PDT) Message-Id: <20060612.214948.124554804.davem@davemloft.net> To: ak@suse.de Cc: jeremy@goop.org, lkml@rtr.ca, mpm@selenic.com, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: Using netconsole for debugging suspend/resume From: David Miller In-Reply-To: <200606130547.49624.ak@suse.de> References: <200606121746.34880.ak@suse.de> <448DDBD9.6030900@goop.org> <200606130547.49624.ak@suse.de> X-Mailer: Mew version 4.2 on Emacs 21.4 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org From: Andi Kleen Date: Tue, 13 Jun 2006 05:47:49 +0200 > I've been playing with the idea of writing "early1394" that just > turns the DMA controller on as early as possible similar to earlyprintk > on the target. Then it would be possible to use it for early > debugging too. But so far it's not done yet. Does this raw1394 thing with firescope just assume DMA address == physical address? How would it work to access all of physical memory properly on IOMMU platforms?