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authorLinus Torvalds <torvalds@g5.osdl.org>2006-06-02 16:02:22 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-02 16:02:22 -0700
commit48e49ead3e92d53196a78c42cf24c0eed6ca98dd (patch)
tree021e1b1616258cfcee73556fa4095db5663afc61 /include/asm-mips/pgtable.h
parentb1ab41c4943008375c149a63602d7407f61de5b2 (diff)
parent0b0968a3e691771bf87e1ce747b2c7d23b5526c8 (diff)
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Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC64]: Fix D-cache corruption in mremap [SPARC64]: Make smp_processor_id() functional before start_kernel()
Diffstat (limited to 'include/asm-mips/pgtable.h')
-rw-r--r--include/asm-mips/pgtable.h10
1 files changed, 9 insertions, 1 deletions
diff --git a/include/asm-mips/pgtable.h b/include/asm-mips/pgtable.h
index 174a3cd..f80fe75 100644
--- a/include/asm-mips/pgtable.h
+++ b/include/asm-mips/pgtable.h
@@ -70,7 +70,15 @@ extern unsigned long zero_page_mask;
#define ZERO_PAGE(vaddr) \
(virt_to_page(empty_zero_page + (((unsigned long)(vaddr)) & zero_page_mask)))
-#define __HAVE_ARCH_MULTIPLE_ZERO_PAGE
+#define __HAVE_ARCH_MOVE_PTE
+#define move_pte(pte, prot, old_addr, new_addr) \
+({ \
+ pte_t newpte = (pte); \
+ if (pte_present(pte) && pfn_valid(pte_pfn(pte)) && \
+ pte_page(pte) == ZERO_PAGE(old_addr)) \
+ newpte = mk_pte(ZERO_PAGE(new_addr), (prot)); \
+ newpte; \
+})
extern void paging_init(void);