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-v2 Thanks! Nicolin Nicolin Chen (3): iommu: Add set/unset_dev_data_user ops iommufd: Add iommufd_device_set_data and iommufd_device_unset_data APIs vfio: Add dev_data_len/uptr in struct vfio_device_bind_iommufd drivers/iommu/iommufd/device.c | 65 ++++++++++++++++++++++++++++++++++ drivers/vfio/device_cdev.c | 19 ++++++++-- drivers/vfio/iommufd.c | 13 +++++++ include/linux/iommu.h | 6 ++++ include/linux/iommufd.h | 4 +++ include/linux/vfio.h | 2 ++ include/uapi/linux/vfio.h | 13 +++++++ 7 files changed, 120 insertions(+), 2 deletions(-) -- 2.40.0
