RE: [PATCH v7 3/9] iommu: Add iommu_copy_struct_from_user_array helper

Tian, Kevin
2023-12-22T03:25:59Z

> From: Liu, Yi L <yi.l.liu@intel.com>
> Sent: Thursday, December 21, 2023 11:40 PM
>
> From: Nicolin Chen <nicolinc@nvidia.com>
>
> Wrap up the data pointer/num sanity and __iommu_copy_struct_from_user
> call for iommu drivers to copy driver specific data at a specific location
> in the struct iommu_user_data_array, and
> iommu_respond_struct_to_user_array()
> to copy response to a specific location in the struct iommu_user_data_array.
>
> And expect it to be used in cache_invalidate_user ops for example.
>
> 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>