x86: unify pte_none

Impact: cleanup

Unify and demacro pte_none.
Signed-off-by: NJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

arch/x86/include/asm/pgtable-2level.h

@@ -53,8 +53,6 @@ static inline pte_t native_ptep_get_and_clear(pte_t *xp)
 #define native_ptep_get_and_clear(xp) native_local_ptep_get_and_clear(xp)
 #endif
 
-#define pte_none(x)		(!(x).pte_low)
-
 /*
  * Bits _PAGE_BIT_PRESENT, _PAGE_BIT_FILE and _PAGE_BIT_PROTNONE are taken,
  * split up the 29 bits of offset into this range:

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

@@ -151,11 +151,6 @@ static inline int pte_same(pte_t a, pte_t b)
 	return a.pte_low == b.pte_low && a.pte_high == b.pte_high;
 }
 
-static inline int pte_none(pte_t pte)
-{
-	return !pte.pte_low && !pte.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

@@ -429,6 +429,11 @@ static inline void __init paravirt_pagetable_setup_done(pgd_t *base)
 }
 #endif	/* CONFIG_PARAVIRT */
 
+static inline int pte_none(pte_t pte)
+{
+	return !pte.pte;
+}
+
 #endif	/* __ASSEMBLY__ */
 
 #ifdef CONFIG_X86_32

arch/x86/include/asm/pgtable_64.h

@@ -171,7 +171,6 @@ static inline int pmd_bad(pmd_t pmd)
 	return (pmd_val(pmd) & ~(PTE_PFN_MASK | _PAGE_USER)) != _KERNPG_TABLE;
 }
 
-#define pte_none(x)	(!pte_val((x)))
 #define pte_present(x)	(pte_val((x)) & (_PAGE_PRESENT | _PAGE_PROTNONE))
 
 #define pages_to_mb(x)	((x) >> (20 - PAGE_SHIFT))   /* FIXME: is this right? */