1 files changed, 31 insertions, 0 deletions
diff --git a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c
index 3714880f72..c3d6ee3959 100644
--- a/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c
+++ b/linux-2.6-xen-sparse/arch/xen/x86_64/mm/ioremap.c
@@ -464,3 +464,34 @@ int direct_remap_area_pages(struct mm_struct *mm,
 }
 
 EXPORT_SYMBOL(direct_remap_area_pages);
+
+int create_lookup_pte_addr(struct mm_struct *mm, 
+                           unsigned long address,
+                           unsigned long *ptep)
+{
+    int f(pte_t *pte, struct page *pte_page, unsigned long addr, void *data) 
+    {
+        unsigned long *ptep = (unsigned long *)data;
+        if (ptep) *ptep = (pfn_to_mfn(page_to_pfn(pte_page)) << PAGE_SHIFT)
+                       | ((unsigned long)pte & ~PAGE_MASK);
+        return 0;
+    }
+
+    return generic_page_range(mm, address, PAGE_SIZE, f, ptep);
+}
+
+EXPORT_SYMBOL(create_lookup_pte_addr);
+
+int touch_pte_range(struct mm_struct *mm,
+                    unsigned long address,
+                    unsigned long size)
+{
+    int f(pte_t *pte, struct page *pte_page, unsigned long addr, void *data) 
+    {
+        return 0;
+    }
+
+    return generic_page_range(mm, address, size, f, NULL);
+}                 
+
+EXPORT_SYMBOL(touch_pte_range);