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e9d36c07bb
Wrap up the data type/pointer/len sanity and a copy_struct_from_user call for iommu drivers to copy driver specific data via struct iommu_user_data. And expect it to be used in the domain_alloc_user op for example. Link: https://lore.kernel.org/r/20231026043938.63898-9-yi.l.liu@intel.com Signed-off-by: Nicolin Chen <nicolinc@nvidia.com> Co-developed-by: Yi Liu <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: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>