This enables HugeTLB page migration for PPC64_BOOK3S systems which implement
HugeTLB page at the PMD level. It enables the kernel configuration option
CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION by default which turns on the function
hugepage_migration_supported() during migration. After the recent changes
to the PTE format, HugeTLB page migration happens successfully.
Signed-off-by: Anshuman Khandual <khand...@linux.vnet.ibm.com>
---
arch/powerpc/Kconfig | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index e4824fd..65d52a0 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -82,6 +82,10 @@ config GENERIC_HWEIGHT
config ARCH_HAS_DMA_SET_COHERENT_MASK
bool
+config ARCH_ENABLE_HUGEPAGE_MIGRATION
+ def_bool y
+ depends on PPC_BOOK3S_64 && HUGETLB_PAGE && MIGRATION
+
config PPC
bool
default y
--
2.1.0
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