Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765655AbXF1UlR (ORCPT ); Thu, 28 Jun 2007 16:41:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758226AbXF1UlG (ORCPT ); Thu, 28 Jun 2007 16:41:06 -0400 Received: from threatwall.zlynx.org ([199.45.143.218]:32998 "EHLO zlynx.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757192AbXF1UlF (ORCPT ); Thu, 28 Jun 2007 16:41:05 -0400 Subject: Re: 2.6.22-rc6-mm1 Intel DMAR crash on AMD x86_64 From: Zan Lynx To: Andrew Morton Cc: linux-kernel@vger.kernel.org, ashok.raj@intel.com, shaohua.li@intel.com, anil.s.keshavamurthy@intel.com In-Reply-To: <20070628034321.38c9f12b.akpm@linux-foundation.org> References: <20070628034321.38c9f12b.akpm@linux-foundation.org> Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="=-b8z8SMVyvtgEnqr7BQ7X" Date: Thu, 28 Jun 2007 14:40:32 -0600 Message-Id: <1183063232.7813.23.camel@localhost> Mime-Version: 1.0 X-Mailer: Evolution 2.10.2 X-Envelope-From: zlynx@acm.org Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2591 Lines: 68 --=-b8z8SMVyvtgEnqr7BQ7X Content-Type: text/plain Content-Transfer-Encoding: quoted-printable On Thu, 2007-06-28 at 03:43 -0700, Andrew Morton wrote: > ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.22-rc6/= 2.6.22-rc6-mm1/ > +intel-iommu-dmar-detection-and-parsing-logic.patch > +intel-iommu-pci-generic-helper-function.patch > +intel-iommu-pci-generic-helper-function-fix.patch > +intel-iommu-clflush_cache_range-now-takes-size-param.patch > +intel-iommu-iova-allocation-and-management-routines.patch > +intel-iommu-iova-allocation-and-management-routines-fix.patch > +intel-iommu-iova-allocation-and-management-routines-fix-2.patch > +intel-iommu-intel-iommu-driver.patch > +intel-iommu-intel-iommu-driver-fix.patch > +intel-iommu-intel-iommu-driver-fix-2.patch > +intel-iommu-avoid-memory-allocation-failures-in-dma-map-api-calls.patch > +intel-iommu-intel-iommu-cmdline-option-forcedac.patch > +intel-iommu-dmar-fault-handling-support.patch > +intel-iommu-iommu-gfx-workaround.patch > +intel-iommu-iommu-floppy-workaround.patch > +intel-iommu-iommu-floppy-workaround-fix.patch > +intel-iommu-iommu-floppy-workaround-fix-fix.patch >=20 > Intel IOMMU support I believe the above patch set is causing the problem. On my first try with rc6-mm1 I said Yes to the CONFIG_DMAR options. (I'm nearly as good as random option selection :-) The system panicked during boot, I believe it was trying to detect an Intel IOMMU. Later when I have a camera, I will try to post a screenshot of the backtrace. (I can't seem to get netconsole to work on boot, only in a module). When I recompiled without DMAR set, things seem to be working great. I seem to be getting better disk read throughput than rc3-mm1, by the way. This laptop is an AMD Athlon64 on a NForce3 running a 64-bit Gentoo build. I'll provide more details on request, and when I get the chance. This is a heads-up on the BUG in case someone has an "ah ha!" moment. --=20 Zan Lynx --=-b8z8SMVyvtgEnqr7BQ7X Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (GNU/Linux) iD8DBQBGhBzAG8fHaOLTWwgRAljYAKCqBDMHVv7AsO+OFlO+2RphFsZRiACfeOeP 8Zj8zkR7ffqVrv2iKFluVW8= =43jF -----END PGP SIGNATURE----- --=-b8z8SMVyvtgEnqr7BQ7X-- - 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/