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Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by BL02EPF0000C402.mail.protection.outlook.com (10.167.241.4) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.6002.11 via Frontend Transport; Tue, 10 Jan 2023 14:31:55 +0000 Received: from sp5-759chost.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.34; Tue, 10 Jan 2023 08:31:54 -0600 From: Suravee Suthikulpanit To: , CC: , , , , , , Suravee Suthikulpanit Subject: [PATCH 0/4] iommu/amd: Force SNP-enabled VFIO domain to 4K page size Date: Tue, 10 Jan 2023 08:31:33 -0600 Message-ID: <20230110143137.54517-1-suravee.suthikulpanit@amd.com> X-Mailer: git-send-email 2.32.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0000C402:EE_|CY5PR12MB6371:EE_ X-MS-Office365-Filtering-Correlation-Id: 9968f72c-d354-433f-4541-08daf3176c7c X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jan 2023 14:31:55.5758 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 9968f72c-d354-433f-4541-08daf3176c7c X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0000C402.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CY5PR12MB6371 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org To support VFIO pass-through device with SNP-enabled guest, IOMMU needs to setup IOMMU page table with matching page size to the RMP. In order for the IOMMU driver to setup page table appropriately, it needs to determine: 1. If an IOMMU domain is a VFIO domain (PATCH 1) 2. If an IOMMU domain belongs to an SNP-enabled guest (PATCH 2,3) 3. Appropriate page size the IOMMU domain (PATCH 4) Please note that patch 2/4 is a preparatory patch for an upcoming series to support SNP, which implements the call-back for the struct amd_iommu_svm_ops.is_snp_guest(). Best Regards, Suravee Suravee Suthikulpanit (4): iommu/amd: Introduce Protection-domain flag VFIO iommu/amd: Introduce structure amd_iommu_svm_ops.is_snp_guest() iommu: Introduce IOMMU call-back for processing struct KVM assigned to VFIO iommu/amd: Force SNP-enabled VFIO domain to 4K page size drivers/iommu/amd/amd_iommu_types.h | 3 ++ drivers/iommu/amd/iommu.c | 45 +++++++++++++++++++++++++++-- drivers/iommu/iommu.c | 10 +++++++ drivers/vfio/vfio_main.c | 1 + include/linux/amd-iommu.h | 6 ++++ include/linux/iommu.h | 4 +++ 6 files changed, 67 insertions(+), 2 deletions(-) -- 2.32.0