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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=SATLEXMB03.amd.com; pr=C Received: from SATLEXMB03.amd.com (165.204.84.17) by BL6PEPF0001AB57.mail.protection.outlook.com (10.167.241.9) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.7918.13 via Frontend Transport; Fri, 6 Sep 2024 12:13:40 +0000 Received: from purico-ed03host.amd.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Fri, 6 Sep 2024 07:13:36 -0500 From: Suravee Suthikulpanit To: , CC: , , , , , , , , , Suravee Suthikulpanit Subject: [PATCH v3 0/5] iommu/amd: Use 128-bit cmpxchg operation to update DTE Date: Fri, 6 Sep 2024 12:13:03 +0000 Message-ID: <20240906121308.5013-1-suravee.suthikulpanit@amd.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL6PEPF0001AB57:EE_|SN7PR12MB7180:EE_ X-MS-Office365-Filtering-Correlation-Id: 6144539e-42c7-457c-8ce4-08dcce6d5853 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700013|376014; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Sep 2024 12:13:40.7614 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6144539e-42c7-457c-8ce4-08dcce6d5853 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BL6PEPF0001AB57.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB7180 This series modifies current implementation to use 128-bit cmpxchg to update DTE when needed as specified in the AMD I/O Virtualization Techonology (IOMMU) Specification. Changes in V3: * Patch 2: - Consolidate patch 2 and 3 - Change rw_semaphore to spin_lock * Patch 3: Expand locking across 256-bit DTE read and update * Patch 4: Fix clear_dte_entry() * Patch 5: Consolidate amd_iommu_set_dirty_tracking() and set_dte_irq_entry() fixes v2: https://lore.kernel.org/lkml/20240829180726.5022-1-suravee.suthikulpanit@amd.com/ v1 :https://lore.kernel.org/lkml/e937e26f-038a-6d01-76a9-76c86760ca4a@gmail.com/T/ Thanks, Suravee Suravee Suthikulpanit (5): iommu/amd: Disable AMD IOMMU if CMPXCHG16B feature is not supported iommu/amd: Introduce helper functions to access and update 256-bit DTE iommu/amd: Modify set_dte_entry() to use 256-bit DTE helpers iommu/amd: Modify clear_dte_entry() to avoid in-place update iommu/amd: Do not update DTE in-place in amd_iommu_set_dirty_tracking and set_dte_irq_entry drivers/iommu/amd/amd_iommu_types.h | 8 +- drivers/iommu/amd/init.c | 23 +-- drivers/iommu/amd/iommu.c | 272 +++++++++++++++++++--------- 3 files changed, 201 insertions(+), 102 deletions(-) -- 2.34.1