[PATCH] powerpc: sparsemem should be the default on powernv

[Michael Ellerman]

Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:

> This is especially true of POWER9 where memory between chips is
> discontiguous.
>
> Signed-off-by: Benjamin Herrenschmidt <benh at kernel.crashing.org>
> ---
>
> diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
> index 4940917..c4b4c55 100644
> --- a/arch/powerpc/Kconfig
> +++ b/arch/powerpc/Kconfig
> @@ -580,7 +580,7 @@ config ARCH_SPARSEMEM_ENABLE
>  
>  config ARCH_SPARSEMEM_DEFAULT
>  	def_bool y
> -	depends on (SMP && PPC_PSERIES) || PPC_PS3
> +	depends on (SMP && PPC_PSERIES) || PPC_PS3 || PPC_POWERNV

Why don't we just make it default y for BOOK3S_64?

It's just the default after all, it can still be changed.

cheers