iommufd: Add IOMMU_HWPT_ALLOC

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This allows userspace to manually create HWPTs on IOAS's and then use
those HWPTs as inputs to iommufd_device_attach/replace().

Following series will extend this to allow creating iommu_domains with
driver specific parameters.

Link: https://lore.kernel.org/r/17-v8-6659224517ea+532-iommufd_alloc_jgg@nvidia.com
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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This commit is contained in:

Jason Gunthorpe 2023-07-17 15:12:13 -03:00

parent fa1ffdb9e2

commit 7074d7bd67

4 changed files with 84 additions and 0 deletions

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46

drivers/iommu/iommufd/hw_pagetable.c

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9

drivers/iommu/iommufd/iommufd_private.h

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3

drivers/iommu/iommufd/main.c

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26

include/uapi/linux/iommufd.h

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