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    Subject[PATCH 0/6] iommufd: Add iommu capability reporting
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    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

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