Message ID | cover.1682234302.git.nicolinc@nvidia.com |
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Sun, 23 Apr 2023 00:41:08 -0700 Received: from rnnvmail203.nvidia.com (10.129.68.9) by rnnvmail204.nvidia.com (10.129.68.6) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Sun, 23 Apr 2023 00:41:07 -0700 Received: from Asurada-Nvidia.nvidia.com (10.127.8.11) by mail.nvidia.com (10.129.68.9) with Microsoft SMTP Server id 15.2.986.37 via Frontend Transport; Sun, 23 Apr 2023 00:41:07 -0700 From: Nicolin Chen <nicolinc@nvidia.com> To: <jgg@nvidia.com>, <kevin.tian@intel.com> CC: <robin.murphy@arm.com>, <eric.auger@redhat.com>, <yi.l.liu@intel.com>, <baolu.lu@linux.intel.com>, <will@kernel.org>, <joro@8bytes.org>, <shameerali.kolothum.thodi@huawei.com>, <jean-philippe@linaro.org>, <linux-arm-kernel@lists.infradead.org>, <iommu@lists.linux.dev>, <linux-kernel@vger.kernel.org> 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: <cover.1682234302.git.nicolinc@nvidia.com> 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; 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Add set_dev_data and unset_dev_data support
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Message
Nicolin Chen
April 23, 2023, 7:40 a.m. UTC
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(+)