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| author |   Dave McCracken <dmccr@us.ibm.com> | 2006-09-25 23:31:48 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2006-09-26 08:48:51 -0700 |
| commit | 46a82b2d5591335277ed2930611f6acb4ce654ed (patch) | |
| tree | e90bc1843701af2012bae92564f7109027a8244f /include/asm-ppc | |
| parent | [PATCH] fix potential stack overflow in mm/slab.c (diff) | |
| download | linux-dev-46a82b2d5591335277ed2930611f6acb4ce654ed.tar.xz linux-dev-46a82b2d5591335277ed2930611f6acb4ce654ed.zip | |
[PATCH] Standardize pxx_page macros
One of the changes necessary for shared page tables is to standardize the
pxx_page macros. pte_page and pmd_page have always returned the struct
page associated with their entry, while pte_page_kernel and pmd_page_kernel
have returned the kernel virtual address. pud_page and pgd_page, on the
other hand, return the kernel virtual address.
Shared page tables needs pud_page and pgd_page to return the actual page
structures. There are very few actual users of these functions, so it is
simple to standardize their usage.
Since this is basic cleanup, I am submitting these changes as a standalone
patch. Per Hugh Dickins' comments about it, I am also changing the
pxx_page_kernel macros to pxx_page_vaddr to clarify their meaning.
Signed-off-by: Dave McCracken <dmccr@us.ibm.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc')
| -rw-r--r-- | include/asm-ppc/pgtable.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h index 51fa7c662917..b1fdbf40dba2 100644 --- a/include/asm-ppc/pgtable.h +++ b/include/asm-ppc/pgtable.h @@ -526,7 +526,7 @@ static inline int pgd_bad(pgd_t pgd) { return 0; } static inline int pgd_present(pgd_t pgd) { return 1; } #define pgd_clear(xp) do { } while (0) -#define pgd_page(pgd) \ +#define pgd_page_vaddr(pgd) \ ((unsigned long) __va(pgd_val(pgd) & PAGE_MASK)) /* @@ -720,12 +720,12 @@ extern pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, * of the pte page. -- paulus */ #ifndef CONFIG_BOOKE -#define pmd_page_kernel(pmd) \ +#define pmd_page_vaddr(pmd) \ ((unsigned long) __va(pmd_val(pmd) & PAGE_MASK)) #define pmd_page(pmd) \ (mem_map + (pmd_val(pmd) >> PAGE_SHIFT)) #else -#define pmd_page_kernel(pmd) \ +#define pmd_page_vaddr(pmd) \ ((unsigned long) (pmd_val(pmd) & PAGE_MASK)) #define pmd_page(pmd) \ (mem_map + (__pa(pmd_val(pmd)) >> PAGE_SHIFT)) @@ -748,7 +748,7 @@ static inline pmd_t * pmd_offset(pgd_t * dir, unsigned long address) #define pte_index(address) \ (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) #define pte_offset_kernel(dir, addr) \ - ((pte_t *) pmd_page_kernel(*(dir)) + pte_index(addr)) + ((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(addr)) #define pte_offset_map(dir, addr) \ ((pte_t *) kmap_atomic(pmd_page(*(dir)), KM_PTE0) + pte_index(addr)) #define pte_offset_map_nested(dir, addr) \ |