+/* Set the dirty and/or accessed bits atomically in a linux PTE, this
+ * function doesn't need to flush the hash entry
+ */
+#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
+static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry, int dirty)
+{
+ unsigned long bits = pte_val(entry) &
+ (_PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_RW);
+ unsigned long old, tmp;
+
+ __asm__ __volatile__(
+ "1: ldarx %0,0,%4\n\
+ andi. %1,%0,%6\n\
+ bne- 1b \n\
+ or %0,%3,%0\n\
+ stdcx. %0,0,%4\n\
+ bne- 1b"
+ :"=&r" (old), "=&r" (tmp), "=m" (*ptep)
+ :"r" (bits), "r" (ptep), "m" (*ptep), "i" (_PAGE_BUSY)
+ :"cc");
+}
+#define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
+ do { \
+ __ptep_set_access_flags(__ptep, __entry, __dirty); \
+ flush_tlb_page_nohash(__vma, __address); \
+ } while(0)
+