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Sun, 23 Apr 2023 00:41:07 -0700 From: Nicolin Chen To: , CC: , , , , , , , , , , Subject: [PATCH RFC v3 0/4] Add set_dev_data and unset_dev_data support Date: Sun, 23 Apr 2023 00:40:30 -0700 Message-ID: X-Mailer: git-send-email 2.40.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT105:EE_|PH7PR12MB7355:EE_ X-MS-Office365-Filtering-Correlation-Id: bf4dc375-25e1-4d69-c21c-08db43ce1ef7 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230028)(4636009)(396003)(136003)(39860400002)(376002)(346002)(451199021)(46966006)(36840700001)(40470700004)(966005)(26005)(40480700001)(336012)(426003)(2616005)(34020700004)(36756003)(83380400001)(36860700001)(47076005)(186003)(40460700003)(7636003)(356005)(82740400003)(70206006)(70586007)(478600001)(86362001)(8936002)(8676002)(54906003)(7416002)(110136005)(5660300002)(7696005)(41300700001)(2906002)(82310400005)(4326008)(6666004)(316002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Apr 2023 07:41:16.2903 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bf4dc375-25e1-4d69-c21c-08db43ce1ef7 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT105.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB7355 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Changelog v3: * Reverted the data in VFIO BIND ioctl to a set of new iommufd ioctls * Replaced the iommu_device_data_size array with a dev_user_data_len variable in the iommu_ops structure. * Added has_dev_data check and locking protection * Added selftest coverage v2: https://lore.kernel.org/all/cover.1681976394.git.nicolinc@nvidia.com/ * Integrated the uAPI into VFIO_DEVICE_BIND_IOMMUFD call * Renamed the previous set_rid_user to set_dev_data, to decouple from the PCI regime. v1: https://lore.kernel.org/all/cover.1680762112.git.nicolinc@nvidia.com/ This is a pair of new uAPI/ops for user space to set an iommu specific device data for a passthrough device. This is primarily used by SMMUv3 driver for now, to link the vSID and the pSID of a device that's behind the SMMU. The link (lookup table) will be used to verify any ATC_INV command from the user space for that device, and then replace the SID field (virtual SID) with the corresponding physical SID. This series is available on Github: https://github.com/nicolinc/iommufd/commits/set_dev_data-rfc-v3 Thanks! Nicolin Nicolin Chen (4): iommu: Add set/unset_dev_user_data ops iommufd: Add IOMMUFD_CMD_DEVICE_SET_DATA and IOMMUFD_CMD_DEVICE_UNSET_DATA iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_DATA iommufd/selftests: Add coverage for IOMMU_DEVICE_SET/UNSET_DATA drivers/iommu/iommufd/device.c | 81 +++++++++++++++++++ drivers/iommu/iommufd/iommufd_private.h | 3 + drivers/iommu/iommufd/iommufd_test.h | 15 ++++ drivers/iommu/iommufd/main.c | 4 + drivers/iommu/iommufd/selftest.c | 42 ++++++++++ include/linux/iommu.h | 13 +++ include/uapi/linux/iommufd.h | 32 ++++++++ tools/testing/selftests/iommu/iommufd.c | 20 +++++ tools/testing/selftests/iommu/iommufd_utils.h | 59 ++++++++++++++ 9 files changed, 269 insertions(+) -- 2.40.0