Merge master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6

[mv-sheeva.git] / include / asm-sparc64 / pgtable.h

diff --git a/include/asm-sparc64/pgtable.h b/include/asm-sparc64/pgtable.h
index c44e7466534e9dab3f4d1cd3c5936cec1b45a80b..cd464f469a2c2b27fe5d157e684e30b2b4fbf051 100644 (file)
--- a/include/asm-sparc64/pgtable.h
+++ b/include/asm-sparc64/pgtable.h
@@ -689,6 +689,23 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *p
 #define pte_clear(mm,addr,ptep)                \
        set_pte_at((mm), (addr), (ptep), __pte(0UL))
 
+#ifdef DCACHE_ALIASING_POSSIBLE
+#define __HAVE_ARCH_MOVE_PTE
+#define move_pte(pte, prot, old_addr, new_addr)                                \
+({                                                                     \
+       pte_t newpte = (pte);                                           \
+       if (tlb_type != hypervisor && pte_present(pte)) {               \
+               unsigned long this_pfn = pte_pfn(pte);                  \
+                                                                       \
+               if (pfn_valid(this_pfn) &&                              \
+                   (((old_addr) ^ (new_addr)) & (1 << 13)))            \
+                       flush_dcache_page_all(current->mm,              \
+                                             pfn_to_page(this_pfn));   \
+       }                                                               \
+       newpte;                                                         \
+})
+#endif
+
 extern pgd_t swapper_pg_dir[2048];
 extern pmd_t swapper_low_pmd_dir[2048];