From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0364FC433DF for ; Mon, 15 Jun 2020 07:20:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF8C2206E2 for ; Mon, 15 Jun 2020 07:20:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728562AbgFOHUG (ORCPT ); Mon, 15 Jun 2020 03:20:06 -0400 Received: from mga06.intel.com ([134.134.136.31]:46777 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgFOHUG (ORCPT ); Mon, 15 Jun 2020 03:20:06 -0400 IronPort-SDR: N33jDiy6WlRnjBigzHEbGB1ze3x9aiOb6JyNGy3os0Hsg3qQ4RN2XKSZXsMRBXVKWGG40qxe4D m/ld/TkDIGmg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Jun 2020 00:20:05 -0700 IronPort-SDR: pVjKcvD5DUuXyhgZT/+naM0K/wlrsMopD51B8UUhQTP3hZZFhEZH31f+pgYgEtpm5B0DDhvfBj ZNbGfr7bb5DA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,514,1583222400"; d="scan'208";a="382433255" Received: from blu2-mobl3.ccr.corp.intel.com (HELO [10.249.172.204]) ([10.249.172.204]) by fmsmga001.fm.intel.com with ESMTP; 15 Jun 2020 00:20:03 -0700 Cc: baolu.lu@linux.intel.com, iommu@lists.linux-foundation.org, Linux Kernel Mailing List , Kai Heng Feng , "Raj, Ashok" , "Sun, Jian" Subject: Re: [Issue]platform/x86: iommu: System can't shutdown because iommu driver keeps checking the status of DMA_GSTS_TES To: Koba Ko , David Woodhouse , Joerg Roedel References: From: Lu Baolu Message-ID: <111dde48-8018-6d74-5df8-1534143f4de6@linux.intel.com> Date: Mon, 15 Jun 2020 15:20:02 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Koba Ko, On 2020/6/15 11:19, Koba Ko wrote: > hi All, > I have a machine and there's only intel gpu. > the secureboot and vt-d is enabled in BIOS. > On the Ubuntu desktop, I do s2idle first and restart the machine. > The machine can't restart successfully, so I need to press the > power button to shutdown. > I tried  each of the following and the issue can't be triggered. > 1. disable secure boot in BIOS. > 2. intel_iommu=off. > 3. intel_iomm=igfx_off. > 4. nomodeset > 5. i915.modeset=0. > > After I investigate further, find inte_iommu keeps checking the status > of DMA_GSTS_TES. > During the procedure of restart, the driver would disable iommu > translation and > check status of DMA_GSTS_TES until status of DMA_GSTS_TES is 0. > > If you need more information, I can provide it. Do you mind telling what platform is it? Best regards, baolu