[PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge

From	Suzuki K Poulose <suzuki.poulose@arm.com>
Newsgroups	linux.kernel
Subject	[PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge
Date	2016-04-14 15:30 +0200
Message-ID	<rnPvm-2fL-49@gated-at.bofh.it> (permalink)
References	<rnPvk-2fL-5@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Steve Capper <steve.capper@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@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))
 
-- 
1.7.9.5

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[PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge Suzuki K Poulose <suzuki.poulose@arm.com> - 2016-04-14 15:30 +0200
  Re: [PATCH v2 04/17] arm64: Introduce pmd_thp_or_huge Will Deacon <will.deacon@arm.com> - 2016-04-15 17:20 +0200

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