Hi Stephen, On Mon, Sep 24, 2018 at 02:38:53PM +1000, Stephen Rothwell wrote: > diff --cc arch/arm64/Kconfig > index da5e6f085561,f8a618a292f4..000000000000 > --- a/arch/arm64/Kconfig > +++ b/arch/arm64/Kconfig > @@@ -785,7 -786,8 +785,8 @@@ config ARCH_FLATMEM_ENABL > def_bool !NUMA > > config HAVE_ARCH_PFN_VALID > - def_bool ARCH_HAS_HOLES_MEMORYMODEL || !SPARSEMEM > + def_bool y > + select HAVE_MEMBLOCK_PFN_VALID It looks fine. Thanks. -- Catalin