Hi Anshuman
On 02/10/18 13:15, Anshuman Khandual wrote:
Architectures like arm64 have PUD level HugeTLB pages for certain configs
(1GB huge page is PUD based on ARM64_4K_PAGES base page size) that can be
enabled for migration. It can be achieved through checking for PUD_SHIFT
order based HugeTLB pages during migration.
Signed-off-by: Anshuman Khandual <anshuman.khandual@xxxxxxx>
---
include/linux/hugetlb.h | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h
index 6b68e34..9c1b77f 100644
--- a/include/linux/hugetlb.h
+++ b/include/linux/hugetlb.h
@@ -483,7 +483,8 @@ static inline bool hugepage_migration_supported(struct hstate *h)
{
#ifdef CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION
if ((huge_page_shift(h) == PMD_SHIFT) ||
- (huge_page_shift(h) == PGDIR_SHIFT))
+ (huge_page_shift(h) == PUD_SHIFT) ||
+ (huge_page_shift(h) == PGDIR_SHIFT))
nit: Extra Tab ^^.
Also, if only arm64 supports PUD_SHIFT, should this be added only in the
arm64 specific backend, which we introduce later ?
Suzuki
