x86: add and use pgd/pud/pmd_flags

Add pgd/pud/pmd_flags which are analogous to pte_flags, and use them
where-ever we only care about testing the flags portions of the
respective entries.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/arch/x86/include/asm/page.h b/arch/x86/include/asm/page.h
index e9873a2e8695..0b16b64a8fe7 100644
--- a/arch/x86/include/asm/page.h
+++ b/arch/x86/include/asm/page.h
@@ -95,6 +95,11 @@ static inline pgdval_t native_pgd_val(pgd_t pgd)
         return pgd.pgd;
 }
 
+static inline pgdval_t pgd_flags(pgd_t pgd)
+{
+        return native_pgd_val(pgd) & PTE_FLAGS_MASK;
+}
+
 #if PAGETABLE_LEVELS >= 3
 #if PAGETABLE_LEVELS == 4
 typedef struct { pudval_t pud; } pud_t;
@@ -117,6 +122,11 @@ static inline pudval_t native_pud_val(pud_t pud)
 }
 #endif  /* PAGETABLE_LEVELS == 4 */
 
+static inline pudval_t pud_flags(pud_t pud)
+{
+        return native_pud_val(pud) & PTE_FLAGS_MASK;
+}
+
 typedef struct { pmdval_t pmd; } pmd_t;
 
 static inline pmd_t native_make_pmd(pmdval_t val)
@@ -128,6 +138,11 @@ static inline pmdval_t native_pmd_val(pmd_t pmd)
 {
         return pmd.pmd;
 }
+
+static inline pmdval_t pmd_flags(pmd_t pmd)
+{
+        return native_pmd_val(pmd) & PTE_FLAGS_MASK;
+}
 #else  /* PAGETABLE_LEVELS == 2 */
 #include <asm-generic/pgtable-nopmd.h>