Re: [PATCH REBASE v2 1/2] x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig

[Hanjun Guo]

On 2019/5/26 20:50, Alexandre Ghiti wrote:
> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
> move this declaration in arch/Kconfig and make those architectures
> select it.
> 
> Signed-off-by: Alexandre Ghiti <alex@xxxxxxxx>
> Reviewed-by: Palmer Dabbelt <palmer@xxxxxxxxxx>
> ---
>  arch/Kconfig       | 3 +++
>  arch/arm64/Kconfig | 2 +-
>  arch/x86/Kconfig   | 4 +---
>  3 files changed, 5 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/Kconfig b/arch/Kconfig
> index c47b328eada0..d2f212dc8e72 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
>  config HAVE_ARCH_HUGE_VMAP
>  	bool
>  
> +config ARCH_WANT_HUGE_PMD_SHARE
> +	bool
> +
>  config HAVE_ARCH_SOFT_DIRTY
>  	bool
>  
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 4780eb7af842..dee7f750c42f 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -70,6 +70,7 @@ config ARM64
>  	select ARCH_SUPPORTS_NUMA_BALANCING
>  	select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>  	select ARCH_WANT_FRAME_POINTERS
> +	select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
>  	select ARCH_HAS_UBSAN_SANITIZE_ALL
>  	select ARM_AMBA
>  	select ARM_ARCH_TIMER
> @@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
>  	def_bool y
>  
>  config ARCH_WANT_HUGE_PMD_SHARE
> -	def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)

Why not remove config ARCH_WANT_HUGE_PMD_SHARE as well?
Did I miss something?

Thanks
Hanjun