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=-6.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 AE940C2BB84 for ; Wed, 16 Sep 2020 15:58:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 448A522482 for ; Wed, 16 Sep 2020 15:58:48 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=amdcloud.onmicrosoft.com header.i=@amdcloud.onmicrosoft.com header.b="R9J68+9g" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726417AbgIPP6T (ORCPT ); Wed, 16 Sep 2020 11:58:19 -0400 Received: from mail-bn8nam12on2066.outbound.protection.outlook.com ([40.107.237.66]:5217 "EHLO NAM12-BN8-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726338AbgIPPz1 (ORCPT ); Wed, 16 Sep 2020 11:55:27 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=X5da7cNISfxChe0KkcXmjqHno29CSqeCU21shADvfKyyvM++byi1y9k4Q+EXRN57FzqNta0+J+e6P3hY93LkLsBKZFJqoL/eIGlnQkly/BVejOQzxkES1PEkFQcRMrvIYoPzEIIrEFwYRcrdgYT4TKadjT4Q98oD41SdUXtFFXKavoShPEw0zO0pzu3iXpggSjsR/JFeJovcaHxy9Q/l9HyZjzApu9rmNVv8OfHR50bjoDJquk/+RVNtGjOo1Sj5yNm+9cyTVKy9GBaopLmV7SOfUGJRow5lYgzIdBfXCJ1p9UX6yndPpqoyhgB2pFUOkADzwaS/RgF6LoTce588yg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=djf7fjP+Vm9HzJ6fkqPzKMJSSUTbtpKj+TRNn8LmcaQ=; b=fynnWMKvstlWO8DJF8IXnSVDeteRLPnrCyqEicdbyWozIFHixUoK0RVQ+y2bCj9/pM4I046QigceTl2sm5+VXwSehrDc9vzHhrOW/nufDnSSUzeSFix17YP8cI4ryOgvu4dTlkKmWvMNUY2EQTAR7BYWHsBKI41TM8DGVo8AzfUzbMowYOfmBCgY1xwb7F2B6zCOmP47BMnOwVfbncu0lt8upx87M1yYWjGD1boVYjAgTY/Tckn7eyNFq3XD0bckVltDbv6RX2aBREYIFbquwWsQJiJo3TKZX6ng5+lNXh6Omysno1k89blfeBMNpmM+75G8QNAqxg3Iw96jT0WY4w== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=amd.com; dmarc=pass action=none header.from=amd.com; dkim=pass header.d=amd.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amdcloud.onmicrosoft.com; s=selector2-amdcloud-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=djf7fjP+Vm9HzJ6fkqPzKMJSSUTbtpKj+TRNn8LmcaQ=; b=R9J68+9gCy4FpKrjcLaKMXfHxavonn31Z36bgA5lGGZocqisoBl9Bw08gHIi+A7i3gyZR3qpGHEtNEX6Ob+nYC5J1NLFdgyFLF69qscs/OUrL8IU0Sr66OoutvzmmWn4ViTimMWuwNnWX6Sxnz6C5cjvA4GfK/Z10zLPGdXDiXc= Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=amd.com; Received: from DM5PR12MB1163.namprd12.prod.outlook.com (10.168.240.18) by DM5PR1201MB0123.namprd12.prod.outlook.com (10.174.104.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3391.11; Wed, 16 Sep 2020 13:53:05 +0000 Received: from DM5PR12MB1163.namprd12.prod.outlook.com ([fe80::48cf:d69:d457:1b1e]) by DM5PR12MB1163.namprd12.prod.outlook.com ([fe80::48cf:d69:d457:1b1e%5]) with mapi id 15.20.3370.019; Wed, 16 Sep 2020 13:53:05 +0000 From: Suravee Suthikulpanit To: linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org Cc: joro@8bytes.org, Jon.Grimm@amd.com, brijesh.singh@amd.com, Suravee Suthikulpanit Subject: [PATCH 0/3] amd : iommu : Initial IOMMU support for SNP Date: Wed, 16 Sep 2020 13:55:46 +0000 Message-Id: <20200916135549.146468-1-suravee.suthikulpanit@amd.com> X-Mailer: git-send-email 2.17.1 Content-Type: text/plain X-ClientProxiedBy: SA9PR10CA0011.namprd10.prod.outlook.com (2603:10b6:806:a7::16) To DM5PR12MB1163.namprd12.prod.outlook.com (2603:10b6:3:7a::18) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from ethanolx5673host.amd.com (165.204.78.2) by SA9PR10CA0011.namprd10.prod.outlook.com (2603:10b6:806:a7::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3370.16 via Frontend Transport; Wed, 16 Sep 2020 13:53:04 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [165.204.78.2] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 2de8678c-a855-44fe-6c28-08d85a47d60d X-MS-TrafficTypeDiagnostic: DM5PR1201MB0123: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:8882; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: hto+kK8xTW4p1HpX5gSb4IFfj0uArq+tjd4PyTFhZi3GgQTImC0CVQXxvV0eho5kPgp/lzuBexR63RuLIy6DhSHvIMHeTXCCCxJFVRxYPyqxjU4jVXQ6/GnjKJrLcig3OS60k757Yf+uhxcYfOigtDcCXJKshsP+Ah6LrUxkR+cyJ3c6CbStdhkLZu9IQpGdN1ZwtmOSRDdqvLc7wPmfPQcJbk/7ldUftL2o9izeY2QDb1aVkItbZcHMmCMzzTfkGmOCCAYdqE5JI8BrgtO5aGcBJ1Eu3DrZxoInDpRcHmiRtlYndWH+nOImeejMXQVxdz2/1iP4PSJRUNpkvOwkV7emhrjtKXvz7WRYucPQbUiPEoIzTWc9sPe2Iwb0dvIBPJb8rgtou4f0k8s3W+/G7Q== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:DM5PR12MB1163.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFS:(4636009)(396003)(366004)(376002)(136003)(346002)(39860400002)(186003)(956004)(2616005)(478600001)(44832011)(83380400001)(26005)(16526019)(6666004)(4326008)(8936002)(6486002)(316002)(966005)(86362001)(66946007)(52116002)(5660300002)(66476007)(66556008)(7696005)(36756003)(2906002)(8676002)(1076003);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: 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 X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2de8678c-a855-44fe-6c28-08d85a47d60d X-MS-Exchange-CrossTenant-AuthSource: DM5PR12MB1163.namprd12.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Sep 2020 13:53:05.8179 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: q7OoAHpr7n4LfUmGToTQCKclV3QKJCFFBLmrfeXxXQ6FiUise5YCBV/99HuSu+6BqejTYEvnMBcjyhuoJcbNaQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM5PR1201MB0123 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Introducing support for AMD Secure Nested Paging (SNP) with IOMMU, which mainly affects the use of IOMMU Exclusion Base and Range Limit registers. Note that these registers are no longer used by Linux IOMMU driver. Patch 2 and 3 are SNP-specific, and discuss detail of the implementation. In order to support SNP, the current Completion Wait Write-back logic is modified (patch 1/4). This change is independent from SNP. Please see the following white paper for more info on SNP: https://www.amd.com/system/files/TechDocs/SEV-SNP-strengthening-vm-isolation-with-integrity-protection-and-more.pdf Thank you, Suravee Suravee Suthikulpanit (3): iommu: amd: Use 4K page for completion wait write-back semaphore iommu: amd: Add support for RMP_PAGE_FAULT and RMP_HW_ERR iommu: amd: Re-purpose Exclusion range registers to support SNP CWWB drivers/iommu/amd/amd_iommu_types.h | 6 ++- drivers/iommu/amd/init.c | 44 +++++++++++++++ drivers/iommu/amd/iommu.c | 84 ++++++++++++++++++++++++----- 3 files changed, 121 insertions(+), 13 deletions(-) -- 2.17.1