x86: unify pte_same

Impact: cleanup

Unify and demacro pte_same.

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

arch/x86/include/asm/pgtable-3level.h

@@ -145,12 +145,6 @@ static inline pte_t native_ptep_get_and_clear(pte_t *ptep)
 #define native_ptep_get_and_clear(xp) native_local_ptep_get_and_clear(xp)
 #endif
 
-#define __HAVE_ARCH_PTE_SAME
-static inline int pte_same(pte_t a, pte_t b)
-{
-	return a.pte_low == b.pte_low && a.pte_high == b.pte_high;
-}
-
 /*
  * Bits 0, 6 and 7 are taken in the low part of the pte,
  * put the 32 bits of offset into the high part.

arch/x86/include/asm/pgtable.h

@@ -434,6 +434,12 @@ static inline int pte_none(pte_t pte)
 	return !pte.pte;
 }
 
+#define __HAVE_ARCH_PTE_SAME
+static inline int pte_same(pte_t a, pte_t b)
+{
+	return a.pte == b.pte;
+}
+
 #endif	/* __ASSEMBLY__ */
 
 #ifdef CONFIG_X86_32

arch/x86/include/asm/pgtable_64.h

@@ -134,8 +134,6 @@ static inline void native_pgd_clear(pgd_t *pgd)
 	native_set_pgd(pgd, native_make_pgd(0));
 }
 
-#define pte_same(a, b)		((a).pte == (b).pte)
-
 #endif /* !__ASSEMBLY__ */
 
 #define PMD_SIZE	(_AC(1, UL) << PMD_SHIFT)