powerpc: Add 64 bit version of huge_ptep_set_wrprotect

[pandora-kernel.git] / include / asm-powerpc / pgtable-ppc64.h

diff --git a/include/asm-powerpc/pgtable-ppc64.h b/include/asm-powerpc/pgtable-ppc64.h
index cc6a43b..b2754d4 100644 (file)
--- a/include/asm-powerpc/pgtable-ppc64.h
+++ b/include/asm-powerpc/pgtable-ppc64.h
@@ -91,7 +91,6 @@
 #define _PAGE_DIRTY    0x0080 /* C: page changed */
 #define _PAGE_ACCESSED 0x0100 /* R: page referenced */
 #define _PAGE_RW       0x0200 /* software: user write access allowed */
-#define _PAGE_HASHPTE  0x0400 /* software: pte has an associated HPTE */
 #define _PAGE_BUSY     0x0800 /* software: PTE & hash are busy */
 
 #define _PAGE_BASE     (_PAGE_PRESENT | _PAGE_ACCESSED | _PAGE_COHERENT)
@@ -313,6 +312,15 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr,
                        return;
        old = pte_update(mm, addr, ptep, _PAGE_RW, 0);
 }
+static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
+                                          unsigned long addr, pte_t *ptep)
+{
+       unsigned long old;
+
+               if ((pte_val(*ptep) & _PAGE_RW) == 0)
+                       return;
+       old = pte_update(mm, addr, ptep, _PAGE_RW, 1);
+}
 
 /*
  * We currently remove entries from the hashtable regardless of whether