RE: [PATCH v3 03/17] iommufd/hw_pagetable: Use domain_alloc_user op for domain allocation

From: Liu, Yi L yi.l.liu@intel.com Sent: Monday, July 24, 2023 7:04 PM

This makes IOMMUFD to use iommu_domain_alloc_user() for iommu_domain creation as IOMMUFD needs to support iommu_domain allocation with parameters from userspace in nesting support. If the iommu driver doesn't provide domain_alloc_user callback then it falls back to use iommu_domain_alloc().

Suggested-by: Jason Gunthorpe jgg@nvidia.com Reviewed-by: Lu Baolu baolu.lu@linux.intel.com Co-developed-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Nicolin Chen nicolinc@nvidia.com Signed-off-by: Yi Liu yi.l.liu@intel.com

Reviewed-by: Kevin Tian kevin.tian@intel.com