From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933044AbXBLGvJ (ORCPT ); Mon, 12 Feb 2007 01:51:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933048AbXBLGvI (ORCPT ); Mon, 12 Feb 2007 01:51:08 -0500 Received: from cantor2.suse.de ([195.135.220.15]:47656 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933044AbXBLGvH (ORCPT ); Mon, 12 Feb 2007 01:51:07 -0500 From: Andi Kleen To: Benjamin Herrenschmidt Subject: Re: remote debugging via FireWire Date: Mon, 12 Feb 2007 07:49:54 +0100 User-Agent: KMail/1.9.5 Cc: Stefan Richter , Bernhard Kaindl , discuss@x86-64.org, linux1394-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org References: <200702101242.48467.ak@suse.de> <45CE19F3.2070603@s5r6.in-berlin.de> <1171229738.20494.60.camel@localhost.localdomain> In-Reply-To: <1171229738.20494.60.camel@localhost.localdomain> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200702120749.54976.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sunday 11 February 2007 22:35, Benjamin Herrenschmidt wrote: > I'd like to have that on ppc as well, so I'd rather keep it in drivers/ This will need some abstraction at least -- there are some early mapping hacks that are x86 specific right now. > I agree that it doesn't need to be a module. If you can load modules, > then you can load the full ohci driver. Thus, if it's an early thingy > initialized by arch, it can export a special "takeover" hook that the > proper ohci module can then call to override it (important if we start > having an irq handler). > > Andi, also, how do you deal with iommu ? Not at all ? :-) Yes -- it's really early debugging hack mostly. It's reasonable to let the iommu be disabled (or later a special bypass can be added for this) -Andi