Messages in this thread | | | From | Nicolin Chen <> | Subject | [PATCH v5 0/4] Add set_dev_data and unset_dev_data support | Date | Thu, 27 Jul 2023 14:09:39 -0700 |
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Changelog v5: * Renamed ioctls to IOMMU_SET_DEV_DATA and IOMMU_UNSET_DEV_DATA * Renamed data structs to iommu_set_dev_data and IOMMU_UNSET_DEV_DATA * Added missing TEST_LENGTH for those two new data structures v4: https://lore.kernel.org/all/cover.1683593949.git.nicolinc@nvidia.com/ * Rebased on top of v6.4-rc1, and iommufd_nesting-v2 (candidate) * Dropped WARN_ON in the destroy() v3: https://lore.kernel.org/all/cover.1682234302.git.nicolinc@nvidia.com/ * 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-v5
Thanks! Nicolin
Nicolin Chen (4): iommu: Add set/unset_dev_user_data ops iommufd: Add IOMMUFD_CMD_SET_DEV_DATA and IOMMUFD_CMD_UNSET_DEV_DATA iommufd/selftest: Add IOMMU_TEST_OP_DEV_CHECK_DATA iommufd/selftest: Add coverage for IOMMU_SET/UNSET_DEV_DATA
drivers/iommu/iommufd/device.c | 2 + drivers/iommu/iommufd/iommufd_private.h | 1 + drivers/iommu/iommufd/iommufd_test.h | 15 ++++ drivers/iommu/iommufd/main.c | 85 +++++++++++++++++++ drivers/iommu/iommufd/selftest.c | 42 +++++++++ include/linux/iommu.h | 13 +++ include/uapi/linux/iommufd.h | 32 +++++++ tools/testing/selftests/iommu/iommufd.c | 22 +++++ tools/testing/selftests/iommu/iommufd_utils.h | 59 +++++++++++++ 9 files changed, 271 insertions(+)
-- 2.41.0
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