Received: by 2002:a25:31c3:0:0:0:0:0 with SMTP id x186csp3252908ybx; Fri, 8 Nov 2019 16:40:21 -0800 (PST) X-Google-Smtp-Source: APXvYqyiGzIU0UKqg07mw27NzdT+RolinYXC31ucyf7oXHzmMrI1fEcFfFAfiG31YsFItsX8sikg X-Received: by 2002:a17:906:3b07:: with SMTP id g7mr11601829ejf.114.1573260021312; Fri, 08 Nov 2019 16:40:21 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1573260021; cv=none; d=google.com; s=arc-20160816; b=R4odov4S83G5g3wRUkiOWIVgY1ehx1IaK37NX4vB98PE228CRWRvc9LP7M9OY4KGq+ MH0f6uovjLs7nox4WoynyGuDVn3iFjIow4j8Dx3XETg6u8bYZG3BS8qoBa79o/hPoRMc qmIzM5s9GNSq9PddMmr1FqG7zyJ6/cJhgngR5AmWByPyUo/zMV4YMmZp3edvjjxRTIqc U29P8OjLY5TBT8/xgfC6Q+By6/vQnlayFSdu5OPd3dFl7/P9XPIcyCXL3GzLGC8nFdf/ pvM1ndX9TyM1V50o1WqYxBAN102FXMPAWLzQ0EZ6uMYy62YBcNTGTZDrYRoqK1L1HCbn jc8A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding :content-language:in-reply-to:mime-version:user-agent:date :message-id:from:references:to:subject:cc; bh=t24X3DL0kM1BJINdiRugwNWl4NFpSD17XLmB8Le60PU=; b=IXLxZ/SzfIJR1Z8A1tofsDCCgfdCQ3YWlUjEfR8+tKur8xqOBGutF70r9UEXNZ6sR2 k/dMcz4IprBn2pchrulfuRoIfPlNMncf8M5HCvb9HvihaOcs+ckn6HFzLptUcQ7JC/Qi l0w7Bw9aiEZfLdqC1mQNzCo0PDyO+OR/WPZumfF3xnxj5GpbgxKE4Gwm+5GV5GsWz2cj JmHmQhLDV8MEBT4laYn38HxQdajH7Hw8UdUs6qdvcryQtkOn35pf5Nht3S0zp7waHoFw /9ZjDr/4JAUG9sJ9SLrv3aeFoRrKKk5qZY6mEr/QaO7RpKKR4GPoQB/J1Z9jjhrhCj19 /Oww== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t1si4970403ejb.341.2019.11.08.16.39.54; Fri, 08 Nov 2019 16:40:21 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726641AbfKIAi0 (ORCPT + 99 others); Fri, 8 Nov 2019 19:38:26 -0500 Received: from mga18.intel.com ([134.134.136.126]:9228 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726227AbfKIAi0 (ORCPT ); Fri, 8 Nov 2019 19:38:26 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Nov 2019 16:38:25 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,283,1569308400"; d="scan'208";a="213338067" Received: from allen-box.sh.intel.com (HELO [10.239.159.136]) ([10.239.159.136]) by fmsmga001.fm.intel.com with ESMTP; 08 Nov 2019 16:38:24 -0800 Cc: baolu.lu@linux.intel.com, joro@8bytes.org, Linux Kernel Mailing List , iommu@lists.linux-foundation.org, David Woodhouse Subject: Re: [PATCH] intel-iommu: Turn off translations at shutdown To: Deepa Dinamani References: <20191107205914.10611-1-deepa.kernel@gmail.com> From: Lu Baolu Message-ID: <2f09d7f4-6c9a-91f1-4618-c196f46870b9@linux.intel.com> Date: Sat, 9 Nov 2019 08:35:33 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.9.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, On 11/9/19 6:28 AM, Deepa Dinamani wrote: >>> + x86_platform.iommu_shutdown = intel_iommu_shutdown; >> >> How about moving it to detect_intel_iommu() in drivers/iommu/dmar.c? And > > Ok, makes sense to move it along with the init handler. > >> make sure that it's included with CONFIG_X86_64. > > You mean CONFIG_X86 like the init that is already there? > > #ifdef CONFIG_X86 > if (!ret) > x86_init.iommu.iommu_init = intel_iommu_init; > #endif > Yes. Also, change the title to "iommu/vt-d: Turn off ..." Best regards, baolu