x86: unify pud_offset

Impact: cleanup

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

arch/x86/include/asm/pgtable.h

@@ -506,6 +506,11 @@ static inline unsigned pud_index(unsigned long address)
 {
 	return (address >> PUD_SHIFT) & (PTRS_PER_PUD - 1);
 }
+
+static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address)
+{
+	return (pud_t *)pgd_page_vaddr(*pgd) + pud_index(address);
+}
 #endif	/* PAGETABLE_LEVELS > 3 */
 
 #endif	/* __ASSEMBLY__ */

arch/x86/include/asm/pgtable_64.h

@@ -183,8 +183,6 @@ static inline int pgd_large(pgd_t pgd) { return 0; }
 #define mk_kernel_pgd(address) __pgd((address) | _KERNPG_TABLE)
 
 /* PUD - Level3 access */
-#define pud_offset(pgd, address)					\
-	((pud_t *)pgd_page_vaddr(*(pgd)) + pud_index((address)))
 
 static inline int pud_large(pud_t pte)
 {