From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756780AbYBJCDQ (ORCPT ); Sat, 9 Feb 2008 21:03:16 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751927AbYBJCCz (ORCPT ); Sat, 9 Feb 2008 21:02:55 -0500 Received: from smtp102.sbc.mail.mud.yahoo.com ([68.142.198.201]:40833 "HELO smtp102.sbc.mail.mud.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751751AbYBJCCo (ORCPT ); Sat, 9 Feb 2008 21:02:44 -0500 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=pacbell.net; h=Received:X-YMail-OSG:X-Yahoo-Newman-Property:From:To:Subject:Date:User-Agent:Cc:References:In-Reply-To:MIME-Version:Content-Type:Content-Transfer-Encoding:Content-Disposition:Message-Id; b=hwIlmVacynZ23TCXQ2i7aQnTtueADrvbOLMwGJu+ZIDK8vFy3r9mUb3eldG0O97hnEiGtphM175rQaWrjPIZhY9x1yQ6Zy6gKQeVkm5451K0bNLDVYIDdE6+SJu2JdIwJNf2aBrXhVhbss8Ic8azSfLYmqVtHd4brhb9lcu6H5A= ; X-YMail-OSG: OBpGYRwVM1m_DemJ9hW9An95tqtxaq2nwmNzSm3NTSJqNW7ut9GinIVzdtzQ5bbqhW3KcqqxZ9CXd72HOFX8jb_6uRuiqgoGttSpXYGaBjb.CCf3k0Y- X-Yahoo-Newman-Property: ymail-3 From: David Brownell To: Jiri Slaby Subject: Re: DMAR EHCI failures Date: Sat, 9 Feb 2008 18:02:41 -0800 User-Agent: KMail/1.9.6 Cc: David Brownell , linux-usb@vger.kernel.org, Alan Stern , Linux Kernel Mailing List , ashok.raj@intel.com, shaohua.li@intel.com, anil.s.keshavamurthy@intel.com, Dave Airlie References: <47A74B02.8050704@gmail.com> In-Reply-To: <47A74B02.8050704@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200802091802.41596.david-b@pacbell.net> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Monday 04 February 2008, Jiri Slaby wrote: > Hi, > > I have this in dmesg: > DMAR:[DMA Write] Request device [00:02.0] fault addr ee1512000 > DMAR:[fault reason 05] PTE Write access is not set > PCI-DMA: Intel(R) Virtualization Technology for Directed I/O > DMAR:[DMA Read] Request device [00:1d.7] fault addr 7d5f0000 > DMAR:[fault reason 06] PTE Read access is not set > DMAR:[DMA Read] Request device [00:1a.7] fault addr 7d5f1000 > DMAR:[fault reason 06] PTE Read access is not set > PCI-GART: No AMD northbridge found. > DMAR:[DMA Read] Request device [00:1a.2] fault addr 7d5f7000 > DMAR:[fault reason 06] PTE Read access is not set > > CONFIG_DMAR=y > CONFIG_DMAR_GFX_WA=y > CONFIG_DMAR_FLOPPY_WA=y > > Without the gfx workaround, there is much more output regarding 00:02.0. Is > there problem with broken hw, bios or drivers? No idea. Someone who knows the DMA Remapping stuff should have an answer. Presumably it works with DMAR disabled, yes? If so, then just don't use DMAR. :) > /sys/firmware/acpi/tables/DMAR: > http://www.fi.muni.cz/~xslaby/sklad/DMAR.bin > dmesg: > http://www.fi.muni.cz/~xslaby/sklad/DMAR.dmesg > > # for a in 00:02.0 00:1d.7 00:1a.7 00:1a.2; do lspci -vxxx -s $a; done > 00:02.0 VGA compatible controller: Intel Corporation 82G33/G31 Express > Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller]) > ... deletia ... >