powerpc/hugetlb: enable hugetlb migration for ppc64

Link: http://lkml.kernel.org/r/1494926612-23928-10-git-send-email-aneesh.kumar@linux.vnet.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Mike Kravetz <kravetz@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/powerpc/platforms/Kconfig.cputype b/arch/powerpc/platforms/Kconfig.cputype
index 684e886eaae403e4b2fdf308c1fbf37f548bd263..d5ea976509d78046ec31868c312891ef71242925 100644 (file)
--- 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.
 
          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
 config PPC_MMU_NOHASH
        def_bool y
        depends on !PPC_STD_MMU