From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752276Ab1LAJOs (ORCPT ); Thu, 1 Dec 2011 04:14:48 -0500 Received: from ackle.nomi.cz ([81.31.33.35]:43723 "EHLO ackle.nomi.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751064Ab1LAJOp (ORCPT ); Thu, 1 Dec 2011 04:14:45 -0500 Date: Thu, 1 Dec 2011 10:14:41 +0100 From: =?utf-8?B?VG9tw6HFoSBKYW5vdcWhZWs=?= To: Clemens Ladisch Cc: Jesse Barnes , Matthew Wilcox , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Dominik Brodowski , Stefan Richter , linux1394-devel@lists.sourceforge.net, David Woodhouse Subject: Re: DMAR:[fault reason 02] Present bit in context entry is clear (firewire-ohci) Message-ID: <20111201091441.GA32731@nomi.cz> References: <4BF7B147.9020502@s5r6.in-berlin.de> <20100522121212.GQ10452@parisc-linux.org> <1274553643.11551.17300.camel@macbook.infradead.org> <20100522120905.154ff932@jbarnes-x201> <20111119172127.GA31915@nomi.cz> <4ED656F6.4080709@ladisch.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4ED656F6.4080709@ladisch.de> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On Wed, Nov 30, 2011 at 05:16:54PM +0100, Clemens Ladisch wrote: > Try the patch in > that is intended to work around the bug in your Ricoh chip. Alternatively, > disable VT-d or FireWire in the BIOS, or add the kernel parameter > "intel_iommu=off". Yeah, I guess that would work, I was just concerned with a fix not being in the mainline. Surely we don't expect every ThinkPad user who wants to use firewire and VT-d to apply the patch himself (the Fedora fix was to forcefully disable IOMMU in presence of that Ricoh device). :-) Regards, -- Tomáš Janoušek, a.k.a. Liskni_si, http://work.lisk.in/