Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756254Ab0BDJrB (ORCPT ); Thu, 4 Feb 2010 04:47:01 -0500 Received: from mail-yx0-f189.google.com ([209.85.210.189]:58298 "EHLO mail-yx0-f189.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755267Ab0BDJq7 (ORCPT ); Thu, 4 Feb 2010 04:46:59 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=vqLrq9hQkQK2groz84FKHiUznRJs4tIsZi3LhnG4uQaik8kOT9RW7SmnWokKZFOW4b k26VxfPit1zqRWglGkaaZvNFUneua2PvsWYK9o7FpKvArZspxI7lPt/cezgEHteCQvD8 sY4fxXo+0ODP5b94Dl5+0xAmX3U/8jPdHc5As= Message-ID: <4B6A97ED.6080605@gmail.com> Date: Thu, 04 Feb 2010 01:48:29 -0800 From: "Justin P. Mattock" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20091114 Lightning/1.0pre Thunderbird/3.0b4 MIME-Version: 1.0 To: Jan Beulich CC: Ingo Molnar , Dan Carpenter , bernhard.kaindl@gmx.net, Thomas Gleixner , linux1394-devel@lists.sourceforge.net, Stefan Richter , Rafael Wysocki , Kernel Testers List , Linux Kernel Mailing List , ebiderman@xmission.com, hpa@zytor.com Subject: Re: ohci1394_dma=early crash since 2.6.32 (was Re: [Bug #14487] PANIC: early exception 08 rip 246:10 error ffffffff810251b5 cr2 0) References: <4B6630CA.9010207@gmail.com> <20100201125441.GB2576@bicker> <4B671606.3080405@gmail.com> <4B673233.8000300@s5r6.in-berlin.de> <4B6740B5.5070601@gmail.com> <4B675534.5070107@s5r6.in-berlin.de> <4B676917.2080506@gmail.com> <4B67BC12.4080709@s5r6.in-berlin.de> <4B67C4D2.5050205@gmail.com> <4B67CC55.40301@s5r6.in-berlin.de> <4B67CCEC.2030103@s5r6.in-berlin.de> <4B68D4CA.2010803@gmail.com> <4B694D5C020000780002D6DA@vpn.id2.novell.com> <4B6A0123.3010607@gmail.com> <4B6A9960020000780002DA6B@vpn.id2.novell.com> <4B6A8DA9.4090804@gmail.com> <4B6A9D4C020000780002DA99@vpn.id2.novell.com> <4B6A90BB.7090405@gmail.com> <4B6AA2D6020000780002DAD1@vpn.id2.novell.com> In-Reply-To: <4B6AA2D6020000780002DAD1@vpn.id2.novell.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 887 Lines: 31 On 02/04/10 01:35, Jan Beulich wrote: >>>> "Justin P. Mattock" 04.02.10 10:17>>> >> so something is using __native_set_fixmap >> that's hitting some memory address then >> set_fixmap_nocache(ohci1394_dma=early) >> fires off hitting the same? > > No, afaict it is the ohci1394_dma=early code itself hitting that path. > > Jan > > alright.. looking at init_ohci1394_dma.c I see: ohci.registers = (void *)fix_to_virt(FIX_OHCI1394_BASE); then I think it calls: set_fixmap_nocache(FIX_OHCI1394_BASE, ohci_base); I'm guessing somewhere with the fix_to_virt might be something (but could be wrong); Justin P. Mattock -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/