[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 at arm.com>
> Cc: Will Deacon <will at kernel.org>
> Cc: Andrew Morton <akpm at linux-foundation.org>
> Cc: David Hildenbrand <david at redhat.com>
> Cc: Mike Rapoport <rppt at kernel.org>
> Cc: linux-arm-kernel at lists.infradead.org
> Cc: linux-kernel at vger.kernel.org
> Cc: linux-mm at kvack.org
> Acked-by: Mike Rapoport <rppt at linux.ibm.com>
> Acked-by: David Hildenbrand <david at redhat.com>
> Signed-off-by: Anshuman Khandual <anshuman.khandual at arm.com>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>