From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755980Ab1ILNWw (ORCPT ); Mon, 12 Sep 2011 09:22:52 -0400 Received: from moh1-ve1.go2.pl ([193.17.41.131]:42397 "EHLO moh1-ve1.go2.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755885Ab1ILNWv convert rfc822-to-8bit (ORCPT ); Mon, 12 Sep 2011 09:22:51 -0400 Subject: =?UTF-8?Q?VT-d_/_iommu_problem_on_Intel_S3210SH?= From: =?UTF-8?Q?Mateusz_Murawski?= To: linux-kernel@vger.kernel.org Mime-Version: 1.0 Message-ID: <5d3988ad.24b007ce.4e6e07a7.c204f@tlen.pl> Date: Mon, 12 Sep 2011 15:22:47 +0200 X-Originator: 85.128.3.148 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi I have problem with Intel VT for Directed I/O. When I enable this option in bios, my system (Fedora 15) can't start. Kernel 2.6.40.4-5.fc15.x86_64 Bios S3200X38.86B.00.00.0052 Last lines from dmesg [ 5.357181] DRHD: handling fault status reg 3 [ 5.358179] DMAR:[DMA Write] Request device [02:08.0] fault addr ffe8a000 [ 5.358179] DMAR:[fault reason 02] Present bit in context entry is clear [ 24.087406] dracut Warning: No root device "block:/dev/disk/by-uuid/1c624f0d-4593-4653-a4ce-b7af80d549ff" found Full dmesgs dmesg_bad_2.6.40 VT-d enable http://pastebin.com/AXAByHBh dmesg_good_2.6.40 VT-d enable iommu=off http://pastebin.com/8zrMRiin Please let me know if you need more information. I have access by serial console. Thanks M.Murawski