x86: unify pte_offset_kernel

Impact: cleanup

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

arch/x86/include/asm/pgtable.h

@@ -509,6 +509,11 @@ static inline unsigned pte_index(unsigned long address)
 	return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
 }
 
+static inline pte_t *pte_offset_kernel(pmd_t *pmd, unsigned long address)
+{
+	return (pte_t *)pmd_page_vaddr(*pmd) + pte_index(address);
+}
+
 #if PAGETABLE_LEVELS > 2
 static inline int pud_present(pud_t pud)
 {

arch/x86/include/asm/pgtable_32.h

@@ -97,9 +97,6 @@ extern unsigned long pg0[];
 
 static inline int pud_large(pud_t pud) { return 0; }
 
-#define pte_offset_kernel(dir, address)				\
-	((pte_t *)pmd_page_vaddr(*(dir)) +  pte_index((address)))
-
 #if defined(CONFIG_HIGHPTE)
 #define pte_offset_map(dir, address)					\
 	((pte_t *)kmap_atomic_pte(pmd_page(*(dir)), KM_PTE0) +		\

arch/x86/include/asm/pgtable_64.h

@@ -198,9 +198,6 @@ static inline int pud_large(pud_t pte)
 
 /* PTE - Level 1 access. */
 
-#define pte_offset_kernel(dir, address) ((pte_t *) pmd_page_vaddr(*(dir)) + \
-					 pte_index((address)))
-
 /* x86-64 always has all page tables mapped. */
 #define pte_offset_map(dir, address) pte_offset_kernel((dir), (address))
 #define pte_offset_map_nested(dir, address) pte_offset_kernel((dir), (address))