x86: unify pud_present

Impact: cleanup

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

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

@@ -28,11 +28,6 @@ static inline int pud_bad(pud_t pud)
 	return (pud_val(pud) & ~(PTE_PFN_MASK | _KERNPG_TABLE | _PAGE_USER)) != 0;
 }
 
-static inline int pud_present(pud_t pud)
-{
-	return pud_val(pud) & _PAGE_PRESENT;
-}
-
 /* Rules for using set_pte: the pte being assigned *must* be
  * either not present or in a state where the hardware will
  * not attempt to update the pte.  In places where this is

arch/x86/include/asm/pgtable.h

@@ -445,6 +445,13 @@ static inline int pte_present(pte_t a)
 	return pte_flags(a) & (_PAGE_PRESENT | _PAGE_PROTNONE);
 }
 
+#if PAGETABLE_LEVELS > 2
+static inline int pud_present(pud_t pud)
+{
+	return pud_val(pud) & _PAGE_PRESENT;
+}
+#endif	/* PAGETABLE_LEVELS > 2 */
+
 #endif	/* __ASSEMBLY__ */
 
 #ifdef CONFIG_X86_32

arch/x86/include/asm/pgtable_64.h

@@ -194,7 +194,6 @@ static inline int pgd_large(pgd_t pgd) { return 0; }
 #define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD - 1))
 #define pud_offset(pgd, address)					\
 	((pud_t *)pgd_page_vaddr(*(pgd)) + pud_index((address)))
-#define pud_present(pud) (pud_val((pud)) & _PAGE_PRESENT)
 
 static inline int pud_large(pud_t pte)
 {