iommufd gives userspace the capabilty to manipulating iommu subsytem. e.g. DMA map/unmap etc. In the near future, it will also support iommu nested translation. Different platform vendors have different implementation for the nested translation. So before set up nested translation, userspace needs to know the hardware iommu capabilities. For example, Intel platform supports guest I/O page table to be the first stage translation structure. This series reports the iommu capability for a given iommufd_device which has been bound to iommufd. It is a preparation work for nested translation support[1]. In this series, Intel VT-d capability reporting is added. Other vendors may add their own reporting based on this series. [1] https://github.com/yiliu1765/iommufd/tree/iommufd_nesting_vtd_v1 Regards, Yi Liu Lu Baolu (2): iommu: Add new iommu op to get iommu hardware information iommu/vt-d: Implement hw_info for iommu capability query Nicolin Chen (2): iommufd/selftest: Set iommu_device for mock_device iommufd/selftest: Add coverage for IOMMU_DEVICE_GET_INFO ioctl Yi Liu (2): iommufd: Add IOMMU_DEVICE_GET_INFO iommufd/device: Add mock_device support in iommufd_device_get_info() drivers/iommu/intel/iommu.c | 19 ++++ drivers/iommu/intel/iommu.h | 1 + drivers/iommu/iommufd/device.c | 91 +++++++++++++++++++ drivers/iommu/iommufd/iommufd_private.h | 2 + drivers/iommu/iommufd/iommufd_test.h | 15 +++ drivers/iommu/iommufd/main.c | 3 + drivers/iommu/iommufd/selftest.c | 26 ++++++ include/linux/iommu.h | 8 ++ include/uapi/linux/iommufd.h | 63 +++++++++++++ tools/testing/selftests/iommu/iommufd.c | 18 +++- tools/testing/selftests/iommu/iommufd_utils.h | 26 ++++++ 11 files changed, 271 insertions(+), 1 deletion(-) -- 2.34.1
