Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933451Ab0BFX4T (ORCPT ); Sat, 6 Feb 2010 18:56:19 -0500 Received: from mail-iw0-f189.google.com ([209.85.223.189]:63873 "EHLO mail-iw0-f189.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755690Ab0BFX4R (ORCPT ); Sat, 6 Feb 2010 18:56:17 -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=cCeker26tQo6XTzsA7zfuS2qxko9t6tgFNRyssVp7YN75U+Ytoz3I2kxCEXBNX6coF +vmp5fKUXZlsSR3EZbZzxF0IeSaX2M+azXB+GkUmRqnJO830a/Vw+Uc0+NUJ+qIOCxEC x4UdPP3BlZWT2vluv6tDy6TuwVZyqIdSFpzNg= Message-ID: <4B6E0203.8030900@gmail.com> Date: Sat, 06 Feb 2010 15:57:55 -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> <4B6A97ED.6080605@gmail.com> <4B6AA817020000780002DB11@vpn.id2.novell.com> In-Reply-To: <4B6AA817020000780002DB11@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: 1540 Lines: 56 On 02/04/10 01:57, Jan Beulich wrote: >>>> "Justin P. Mattock" 04.02.10 10:48>>> >> 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); > > No, it ought to be that set_fixmap_nocache(). > > Jan > > looking into fixmap.h I started to look into: #define NR_FIX_BTMAPS 64 #define FIX_BTMAPS_SLOTS 4 FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 - (__end_of_permanent_fixed_addresses & 255), FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_SLOTS - 1, which led me to a patch you had submitted: http://patchwork.kernel.org/patch/68719/ and another located here: http://lists.openwall.net/linux-kernel/2008/08/29/211 your patch works, I reapplied it to the latest HEAD, and added a bisected-and-tested-by unto it and sent it as an attachment to the bug report. the other thread(patch) I was able to get the system boot with that, as well but with it only changed the size of page(256 to 512 etc..). Let me know what would be the best approach with this. 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/