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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT 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 71FBCC433E1 for ; Thu, 27 Aug 2020 10:02:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 571492075B for ; Thu, 27 Aug 2020 10:02:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728587AbgH0KCa (ORCPT ); Thu, 27 Aug 2020 06:02:30 -0400 Received: from ZXSHCAS1.zhaoxin.com ([203.148.12.81]:51998 "EHLO ZXSHCAS1.zhaoxin.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1726988AbgH0KC3 (ORCPT ); Thu, 27 Aug 2020 06:02:29 -0400 Received: from zxbjmbx1.zhaoxin.com (10.29.252.163) by ZXSHCAS1.zhaoxin.com (10.28.252.161) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 27 Aug 2020 18:02:26 +0800 Received: from localhost.localdomain (61.148.245.65) by zxbjmbx1.zhaoxin.com (10.29.252.163) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1979.3; Thu, 27 Aug 2020 18:02:24 +0800 From: FelixCuioc To: Joerg Roedel , , , David Woodhouse , "Lu Baolu" , Dan Carpenter , CC: , , Subject: [PATCH v3 0/2] Add support for ACPI device in RMRR Date: Thu, 27 Aug 2020 06:02:15 -0400 Message-ID: <20200827100217.21324-1-FelixCui-oc@zhaoxin.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [61.148.245.65] X-ClientProxiedBy: ZXSHCAS2.zhaoxin.com (10.28.252.162) To zxbjmbx1.zhaoxin.com (10.29.252.163) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org BIOS allocate reserved memory ranges that may be DMA targets. BIOS may report each such reserved memory region through the RMRR structures,along with the devices that requires access to the specified reserved memory region. The purpose of this series is to achieve ACPI device in RMRR access reserved memory.Therefore,it is necessary to increase the analysis of acpi device in RMRR and establish a mapping for this device. The first patch adds interfaces for detecting ACPI device in RMRR and in order to distinguish it from pci device, some interface functions are modified. The second patch adds support for probing ACPI device in RMRR. In probe_acpi_namespace_devices(),add support for direct mapping of ACPI device and add support for physical node of acpi device to be NULL. v2->v3: - Add the blank line between functions. - Make dmar_acpi_insert_dev_scope() bool,change the 1/0 to true/false and add a comment explaining. - Delete unused initialization. - if dmar_acpi_insert_dev_scope() always returns zero,will not call dmar_rmrr_add_acpi_dev(). - Use a proper error code. - Use if(!pdev). - Use goto unlock instead of mutex_unlock(). FelixCuioc (2): iommu/vt-d:Add support for detecting ACPI device in RMRR iommu/vt-d:Add support for probing ACPI device in RMRR drivers/iommu/intel/dmar.c | 76 +++++++++++++++++++++---------------- drivers/iommu/intel/iommu.c | 52 ++++++++++++++++++++++++- drivers/iommu/iommu.c | 6 +++ include/linux/dmar.h | 12 +++++- include/linux/iommu.h | 3 ++ 5 files changed, 114 insertions(+), 35 deletions(-) -- 2.17.1