[PULL 04/29] arm64: Introduce pmd_thp_or_huge

[Christoffer Dall]

From: Suzuki K Poulose <suzuki.poulose at arm.com>

Add a helper to determine if a given pmd represents a huge page
either by hugetlb or thp, as we have for arm. This will be used
by KVM MMU code.

Suggested-by: Mark Rutland <mark.rutland at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Cc: Steve Capper <steve.capper at linaro.org>
Cc: Will Deacon <will.deacon at arm.com>
Acked-by: Marc Zyngier <marc.zyngier at arm.com>
Acked-by: Will Deacon <will.deacon at arm.com>
Acked-by: Christoffer Dall <christoffer.dall at linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose at arm.com>
---
 arch/arm64/include/asm/pgtable.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 989fef1..dda4aa9 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -290,6 +290,8 @@ static inline pgprot_t mk_sect_prot(pgprot_t prot)
 #define pmd_mkyoung(pmd)	pte_pmd(pte_mkyoung(pmd_pte(pmd)))
 #define pmd_mknotpresent(pmd)	(__pmd(pmd_val(pmd) & ~PMD_TYPE_MASK))
 
+#define pmd_thp_or_huge(pmd)	(pmd_huge(pmd) || pmd_trans_huge(pmd))
+
 #define __HAVE_ARCH_PMD_WRITE
 #define pmd_write(pmd)		pte_write(pmd_pte(pmd))
 
-- 
2.1.2.330.g565301e.dirty