Re: [PATCH] arm64/mm: Drop HAVE_ARCH_PFN_VALID

[Catalin Marinas]

On Tue, May 25, 2021 at 06:25:49PM +0530, Anshuman Khandual wrote:
> CONFIG_SPARSEMEM_VMEMMAP is now the only available memory model on arm64
> platforms and free_unused_memmap() would just return without creating any
> holes in the memmap mapping. There is no need for any special handling in
> pfn_valid() and HAVE_ARCH_PFN_VALID can just be dropped. This also moves
> the pfn upper bits sanity check into generic pfn_valid().
> 
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: David Hildenbrand <david@xxxxxxxxxx>
> Cc: Mike Rapoport <rppt@xxxxxxxxxx>
> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx
> Cc: linux-mm@xxxxxxxxx
> Acked-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
> Acked-by: David Hildenbrand <david@xxxxxxxxxx>
> Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>

Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx>