Macros for operating on pmd in simillar way like for pte.
Signed-off-by: Radosław Smogura <mail@xxxxxxxxxx>
---
arch/x86/include/asm/pgtable.h | 21 +++++++++++++++++++++
1 files changed, 21 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 49afb3f..38fd008 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -265,6 +265,11 @@ static inline pmd_t pmd_wrprotect(pmd_t pmd)
return pmd_clear_flags(pmd, _PAGE_RW);
}
+static inline int pmd_dirty(pmd_t pmd)
+{
+ return pmd_flags(pmd) & _PAGE_DIRTY;
+}
+
static inline pmd_t pmd_mkdirty(pmd_t pmd)
{
return pmd_set_flags(pmd, _PAGE_DIRTY);
@@ -285,6 +290,11 @@ static inline pmd_t pmd_mkwrite(pmd_t pmd)
return pmd_set_flags(pmd, _PAGE_RW);
}
+static inline pmd_t pmd_writeprotect(pmd_t pmd)
+{
+ return pmd_clear_flags(pmd, _PAGE_RW);
+}
+
static inline pmd_t pmd_mknotpresent(pmd_t pmd)
{
return pmd_clear_flags(pmd, _PAGE_PRESENT);
@@ -731,6 +741,17 @@ static inline int pmd_write(pmd_t pmd)
return pmd_flags(pmd) & _PAGE_RW;
}
+#define __HAVE_ARCH_PMD_EXEC
+static inline int pmd_exec(pmd_t pmd)
+{
+ return !(pmd_flags(pmd) & _PAGE_NX);
+}
+
+static inline void pmd_mkexec(pmd_t pmd)
+{
+ pmd_clear_flags(pmd, _PAGE_NX);
+}
+
#define __HAVE_ARCH_PMDP_GET_AND_CLEAR
static inline pmd_t pmdp_get_and_clear(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp)
--
1.7.3.4
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