From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933960Ab3GPWIm (ORCPT ); Tue, 16 Jul 2013 18:08:42 -0400 Received: from lennier.cc.vt.edu ([198.82.162.213]:57354 "EHLO lennier.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933452Ab3GPWIk (ORCPT ); Tue, 16 Jul 2013 18:08:40 -0400 X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.5+dev To: Ingo Molnar Cc: "Li, Zhen-Hua" , Joerg Roedel , David Woodhouse , linux-kernel@vger.kernel.org Subject: Re: next-20130709 DMAR issues In-Reply-To: Your message of "Fri, 12 Jul 2013 14:14:20 +0200." <20130712121419.GA22945@gmail.com> From: Valdis.Kletnieks@vt.edu References: <29624.1373475702@turing-police.cc.vt.edu> <20130712121419.GA22945@gmail.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1374012421_1500P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Tue, 16 Jul 2013 18:07:01 -0400 Message-ID: <21949.1374012421@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --==_Exmh_1374012421_1500P Content-Type: text/plain; charset=us-ascii On Fri, 12 Jul 2013 14:14:20 +0200, Ingo Molnar said: > > (Cc:-ed a few DMAR people.) Sorry for the slow reply, missed this in the lkml firehose. For whatever reason, the damned problem seems to have evaporated: % egrep -i 'dmar|Linux vers' /var/log/messages-20130714 .... Jul 11 18:54:15 turing-police kernel: [ 0.000000] Linux version 3.10.0-next-20130709 (valdis@turing-police.cc.vt.edu) (gcc version 4.8.1 20130612 (Red Hat 4.8.1-2) (GCC) ) #100 SMP PREEMPT Tue Jul 9 16:01:59 EDT 2013 Jul 11 18:54:15 turing-police kernel: [ 0.000000] ACPI: DMAR 00000000cb7fd298 00080 (v01 INTEL SNB 00000001 INTL 00000001) Jul 11 18:54:15 turing-police kernel: [ 0.021632] dmar: Host address width 36 Jul 11 18:54:15 turing-police kernel: [ 0.021638] dmar: DRHD base: 0x000000fed90000 flags: 0x1 Jul 11 18:54:15 turing-police kernel: [ 0.021669] dmar: IOMMU 0: reg_base_addr fed90000 ver 1:0 cap c9008020660262 ecap f0105a Jul 11 18:54:15 turing-police kernel: [ 0.021677] dmar: RMRR base: 0x000000ce761000 end: 0x000000ce780fff Jul 11 18:54:15 turing-police kernel: [ 0.021775] dmar: DRHD: handling fault status reg 2 Jul 11 18:54:15 turing-police kernel: [ 0.021782] dmar: DMAR:[DMA Read] Request device [00:1f.2] fault addr ce71d000 Jul 11 18:54:15 turing-police kernel: [ 0.021782] DMAR:[fault reason 06] PTE Read access is not set Jul 11 18:54:15 turing-police kernel: [ 1.002171] DMAR: No ATSR found Jul 11 22:12:39 turing-police kernel: [ 0.000000] Linux version 3.10.0-next-20130709 (valdis@turing-police.cc.vt.edu) (gcc version 4.8.1 20130612 (Red Hat 4.8.1-2) (GCC) ) #100 SMP PREEMPT Tue Jul 9 16:01:59 EDT 2013 Jul 11 22:12:39 turing-police kernel: [ 0.000000] ACPI: DMAR 00000000cb7fd298 00080 (v01 INTEL SNB 00000001 INTL 00000001) Jul 11 22:12:39 turing-police kernel: [ 0.021376] dmar: Host address width 36 Jul 11 22:12:39 turing-police kernel: [ 0.021382] dmar: DRHD base: 0x000000fed90000 flags: 0x1 Jul 11 22:12:39 turing-police kernel: [ 0.021414] dmar: IOMMU 0: reg_base_addr fed90000 ver 1:0 cap c9008020660262 ecap f0105a Jul 11 22:12:39 turing-police kernel: [ 0.021422] dmar: RMRR base: 0x000000ce761000 end: 0x000000ce780fff Jul 11 22:12:39 turing-police kernel: [ 1.034107] DMAR: No ATSR found Damned if I know what changed - same kernel booted at 18:54 hit the issue, but at 22:12 it had gone into hiding, and I haven't seen it since. (And the laptop gets booted twice a day most days - once at arrival at office, and once when I get home, and it had been doing it consistently at both locations for several days.) Definitely well into "things that go bump in the night" category. --==_Exmh_1374012421_1500P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iQIVAwUBUeXEBQdmEQWDXROgAQLuKA//Xnw/MjghD8U0ATU/fOkhlMqZC1bEJRwj 5tZ+IHNQEwTMSSqLCRzmCHssU7B2+yg/m8/vmaKk2xdgNn8BOvLXOjDOJyWOuPFK XtiZDcNqDRIEzzbHPtPJbErD2y81qBlTNG8b4r8YFJpzWhHljHg9p2pYovMS6wGk m5jSlLR2jgG606tRe35TpHwghp8ptj2890w5r1rr4PF5HQf1N9eDTSetgPZLf8Z1 ir17xOIkAy0JLIvbA+K9Z39Zwozy1Cj3kTiKA/HdONmk/sacIAXUhg5A6CkbAkZR m8jnkOuma1MCO84yDXbuA/C7rupIqtvMm+SRijP25O0AOdpbqowDa0KBu2W683+h QPRrBmrCZWtwDsX/ogCimx7aADgWBV8sdYUQopMHZwlihW4y8S2HR/3vitn/r0SH RQI1HsvuZY9+fgC5fQnwKXTK+tpsDwy2vmc0LHmGIZ75oVZKq/HcFjkfdsuDlC/Z tmdagaxiARfxw2o5wvVwOaDW93lb5BVKp/6YlaPeWDrqof4Sw9a6wtC5AvXKYikD 4B6t0DyK9pNgwg4IKrkqqahsFhtgl0KzUJO8+japoehbeQYni/2zDYf7Y/ox3et8 vhO5Z9oiJz5peDZdUOIC8z46vgMXdF/+e6FBiBJNVrqlevMdk1sYiC/uKRslnqci XUBDvxPGhhQ= =6495 -----END PGP SIGNATURE----- --==_Exmh_1374012421_1500P--