From mboxrd@z Thu Jan 1 00:00:00 1970 From: anshuman.khandual@arm.com (Anshuman Khandual) Date: Tue, 23 Oct 2018 18:31:58 +0530 Subject: [PATCH V3 2/5] mm/hugetlb: Enable PUD level huge page migration In-Reply-To: <1540299721-26484-1-git-send-email-anshuman.khandual@arm.com> References: <1540299721-26484-1-git-send-email-anshuman.khandual@arm.com> Message-ID: <1540299721-26484-3-git-send-email-anshuman.khandual@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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. Reviewed-by: Naoya Horiguchi Signed-off-by: Anshuman Khandual --- 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 1b858d7..70bcd89 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -497,7 +497,8 @@ 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)) return true; else return false; -- 2.7.4