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authorDave McCracken <dmccr@us.ibm.com>2006-09-26 02:31:48 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-09-26 11:48:51 -0400
commit46a82b2d5591335277ed2930611f6acb4ce654ed (patch)
treee90bc1843701af2012bae92564f7109027a8244f /include/asm-xtensa
parentd2e7b7d0aa021847c59f882b066e7d3812902870 (diff)
[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-xtensa')
-rw-r--r--include/asm-xtensa/pgtable.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/asm-xtensa/pgtable.h b/include/asm-xtensa/pgtable.h
index 7b15afb70c56..a47cc734c20c 100644
--- a/include/asm-xtensa/pgtable.h
+++ b/include/asm-xtensa/pgtable.h
@@ -218,7 +218,7 @@ extern pgd_t swapper_pg_dir[PAGE_SIZE/sizeof(pgd_t)];
218/* 218/*
219 * The pmd contains the kernel virtual address of the pte page. 219 * The pmd contains the kernel virtual address of the pte page.
220 */ 220 */
221#define pmd_page_kernel(pmd) ((unsigned long)(pmd_val(pmd) & PAGE_MASK)) 221#define pmd_page_vaddr(pmd) ((unsigned long)(pmd_val(pmd) & PAGE_MASK))
222#define pmd_page(pmd) virt_to_page(pmd_val(pmd)) 222#define pmd_page(pmd) virt_to_page(pmd_val(pmd))
223 223
224/* 224/*
@@ -349,7 +349,7 @@ ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
349/* Find an entry in the third-level page table.. */ 349/* Find an entry in the third-level page table.. */
350#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)) 350#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
351#define pte_offset_kernel(dir,addr) \ 351#define pte_offset_kernel(dir,addr) \
352 ((pte_t*) pmd_page_kernel(*(dir)) + pte_index(addr)) 352 ((pte_t*) pmd_page_vaddr(*(dir)) + pte_index(addr))
353#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr)) 353#define pte_offset_map(dir,addr) pte_offset_kernel((dir),(addr))
354#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr)) 354#define pte_offset_map_nested(dir,addr) pte_offset_kernel((dir),(addr))
355 355