iommufd: Support allocating nested parent domain

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Extend IOMMU_HWPT_ALLOC to allocate domains to be used as parent (stage-2)
in nested translation.

Add IOMMU_HWPT_ALLOC_NEST_PARENT to the uAPI.

Link: https://lore.kernel.org/r/20230928071528.26258-5-yi.l.liu@intel.com
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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Yi Liu 2023-09-28 00:15:26 -07:00 • committed by Jason Gunthorpe

parent 89d63875d8

commit 4ff5421633

2 changed files with 15 additions and 2 deletions

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5

drivers/iommu/iommufd/hw_pagetable.c

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12

include/uapi/linux/iommufd.h

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