Re: [RFC PATCH 7/7] powerpc/hugetlb: Enable hugetlb migration for ppc64

[Anshuman Khandual]

On 04/04/2017 07:34 PM, Aneesh Kumar K.V wrote:
> Signed-off-by: Aneesh Kumar K.V 
> ---
>  arch/powerpc/platforms/Kconfig.cputype | 5 +
>  1 file changed, 5 insertions(+)
> 
> diff --git a/arch/powerpc/platforms/Kconfig.cputype 
> b/arch/powerpc/platforms/Kconfig.cputype
> index 382c3dd86d6d..c0ca27521679 100644
> --- a/arch/powerpc/platforms/Kconfig.cputype
> +++ b/arch/powerpc/platforms/Kconfig.cputype
> @@ -350,6 +350,11 @@ config PPC_RADIX_MMU
> is only implemented by IBM Power9 CPUs, if you don't have one of them
> you can probably disable this.
> 
> +config ARCH_ENABLE_HUGEPAGE_MIGRATION
> + def_bool y
> + depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
> +

I have tested this patch series both for anon and file mapping
on a POWER8 box with 16MB pages. Will try to test it for 16GB
pages on a PVM system.

[RFC PATCH 7/7] powerpc/hugetlb: Enable hugetlb migration for ppc64

[Aneesh Kumar K.V]

Signed-off-by: Aneesh Kumar K.V 
---
 arch/powerpc/platforms/Kconfig.cputype | 5 +
 1 file changed, 5 insertions(+)

diff --git a/arch/powerpc/platforms/Kconfig.cputype 
b/arch/powerpc/platforms/Kconfig.cputype
index 382c3dd86d6d..c0ca27521679 100644
--- a/arch/powerpc/platforms/Kconfig.cputype
+++ b/arch/powerpc/platforms/Kconfig.cputype
@@ -350,6 +350,11 @@ config PPC_RADIX_MMU
  is only implemented by IBM Power9 CPUs, if you don't have one of them
  you can probably disable this.
 
+config ARCH_ENABLE_HUGEPAGE_MIGRATION
+   def_bool y
+   depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
+
+
 config PPC_MMU_NOHASH
def_bool y
depends on !PPC_STD_MMU
-- 
2.7.4