Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/scottwood/linux...

[mirror_ubuntu-zesty-kernel.git] / arch / powerpc / include / asm / book3s / 32 / pgtable.h

diff --git a/arch/powerpc/include/asm/book3s/32/pgtable.h b/arch/powerpc/include/asm/book3s/32/pgtable.h
index dc58980f3ad900e5982c7099ee7079a7afbd6e17..012223638815569bb424e58021f3f9a7196ff0f0 100644 (file)
--- a/arch/powerpc/include/asm/book3s/32/pgtable.h
+++ b/arch/powerpc/include/asm/book3s/32/pgtable.h
@@ -8,6 +8,23 @@
 /* And here we include common definitions */
 #include <asm/pte-common.h>
 
+#define PTE_INDEX_SIZE PTE_SHIFT
+#define PMD_INDEX_SIZE 0
+#define PUD_INDEX_SIZE 0
+#define PGD_INDEX_SIZE (32 - PGDIR_SHIFT)
+
+#define PMD_CACHE_INDEX        PMD_INDEX_SIZE
+
+#ifndef __ASSEMBLY__
+#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_INDEX_SIZE)
+#define PMD_TABLE_SIZE 0
+#define PUD_TABLE_SIZE 0
+#define PGD_TABLE_SIZE (sizeof(pgd_t) << PGD_INDEX_SIZE)
+#endif /* __ASSEMBLY__ */
+
+#define PTRS_PER_PTE   (1 << PTE_INDEX_SIZE)
+#define PTRS_PER_PGD   (1 << PGD_INDEX_SIZE)
+
 /*
  * The normal case is that PTEs are 32-bits and we have a 1-page
  * 1024-entry pgdir pointing to 1-page 1024-entry PTE pages.  -- paulus
@@ -19,14 +36,10 @@
  * -Matt
  */
 /* PGDIR_SHIFT determines what a top-level page table entry can map */
-#define PGDIR_SHIFT    (PAGE_SHIFT + PTE_SHIFT)
+#define PGDIR_SHIFT    (PAGE_SHIFT + PTE_INDEX_SIZE)
 #define PGDIR_SIZE     (1UL << PGDIR_SHIFT)
 #define PGDIR_MASK     (~(PGDIR_SIZE-1))
 
-#define PTRS_PER_PTE   (1 << PTE_SHIFT)
-#define PTRS_PER_PMD   1
-#define PTRS_PER_PGD   (1 << (32 - PGDIR_SHIFT))
-
 #define USER_PTRS_PER_PGD      (TASK_SIZE / PGDIR_SIZE)
 /*
  * This is the bottom of the PKMAP area with HIGHMEM or an arbitrary
@@ -82,12 +95,8 @@
 
 extern unsigned long ioremap_bot;
 
-/*
- * entries per page directory level: our page-table tree is two-level, so
- * we don't really have any PMD directory.
- */
-#define PTE_TABLE_SIZE (sizeof(pte_t) << PTE_SHIFT)
-#define PGD_TABLE_SIZE (sizeof(pgd_t) << (32 - PGDIR_SHIFT))
+/* Bits to mask out from a PGD to get to the PUD page */
+#define PGD_MASKED_BITS                0
 
 #define pte_ERROR(e) \
        pr_err("%s:%d: bad pte %llx.\n", __FILE__, __LINE__, \
@@ -284,15 +293,6 @@ static inline void __ptep_set_access_flags(struct mm_struct *mm,
 #define __pte_to_swp_entry(pte)                ((swp_entry_t) { pte_val(pte) >> 3 })
 #define __swp_entry_to_pte(x)          ((pte_t) { (x).val << 3 })
 
-#ifndef CONFIG_PPC_4K_PAGES
-void pgtable_cache_init(void);
-#else
-/*
- * No page table caches to initialise
- */
-#define pgtable_cache_init()   do { } while (0)
-#endif
-
 extern int get_pteptr(struct mm_struct *mm, unsigned long addr, pte_t **ptep,
                      pmd_t **pmdp);