From: Jason Gunthorpe <jgg@nvidia.com>
Sent: Thursday, November 20, 2025 11:07 PM

Add the missing forward declarations and includes so it does not have
implicit dependencies. mem_encrypt.h is a public header imported by
drivers. Users should not have to guess what include files are needed.

Resolves a kbuild splat:

   In file included from drivers/iommu/generic_pt/fmt/iommu_amdv1.c:15:
   In file included from drivers/iommu/generic_pt/fmt/iommu_template.h:36:
   In file included from drivers/iommu/generic_pt/fmt/amdv1.h:23:
   In file included from include/linux/mem_encrypt.h:17:

quoted

quoted

arch/powerpc/include/asm/mem_encrypt.h:13:49: warning: declaration

of 'struct device' will not be visible outside of this function [-Wvisibility]
      13 | static inline bool force_dma_unencrypted(struct device *dev)

Fixes: 879ced2bab1b ("iommupt: Add the AMD IOMMU v1 page table
format")
Reported-by: kernel test robot <redacted>
Closes: https://lore.kernel.org/oe-kbuild-all/202511161358.rS5pSb3U-
lkp@intel.com/
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>

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