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This adds IOMMU_HWPT_DATA_VTD_S1 for stage-1 hw_pagetable of Intel VT-d and the corressponding data structure for userspace specified parameter for the domain allocation. Link: https://lore.kernel.org/r/20231026044216.64964-2-yi.l.liu@intel.com Reviewed-by: Kevin Tian <kevin.tian@intel.com> Signed-off-by: Yi Liu <yi.l.liu@intel.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>