[PATCH RESEND] ARM: kdump: 2nd kernel should use strict pfn_valid in SPARSEMEM platform

[Will Deacon]

On Thu, May 29, 2014 at 05:54:02AM +0100, AKASHI Takahiro wrote:
> Catalin, Will
> 
> Can we assume that HAVE_ARCH_PFN_VALID is alway yes on arm64?
> Looking at arm64/Kconfig,
> config ARCH_HAS_HOLES_MEMORYMODEL
> 	def_bool y if SPARSEMEM
> ...
> config HAVE_ARCH_PFN_VALID
> 	def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM
> 
> is this intentional?

Looks like an artifact of the way we constructed those option, so yes, we
could just make that a def_bool y if you like.

Will