Thread (22 messages) 22 messages, 5 authors, 2016-03-21

[RFC 8/9] powerpc/mm: Enable HugeTLB page migration

From: Anshuman Khandual <hidden>
Date: 2016-03-09 12:13:28
Also in: linux-mm, lkml
Subsystem: linux for powerpc (32-bit and 64-bit), the rest · Maintainers: Madhavan Srinivasan, Michael Ellerman, Linus Torvalds

This change enables HugeTLB page migration for PPC64_BOOK3S systems
for HugeTLB pages implemented at the PMD level. It enables the kernel
configuration option ARCH_ENABLE_HUGEPAGE_MIGRATION which turns on
'hugepage_migration_supported' function which is checked for feature
presence during migration.

Signed-off-by: Anshuman Khandual <redacted>
---
 arch/powerpc/Kconfig | 4 ++++
 1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index c6920bb..cefc368 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -86,6 +86,10 @@ 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
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help