diff --git a/xen/arch/x86/mm/p2m.c b/xen/arch/x86/mm/p2m.c
index e2a00a0efd..ef35cd564b 100644
--- a/xen/arch/x86/mm/p2m.c
+++ b/xen/arch/x86/mm/p2m.c
@@ -753,8 +753,11 @@ p2m_add_page(struct domain *d, gfn_t gfn, mfn_t mfn,
         if ( !p2m_is_grant(t) )
         {
             for ( i = 0; i < (1UL << page_order); i++ )
+            {
                 set_gpfn_from_mfn(mfn_x(mfn_add(mfn, i)),
                                   gfn_x(gfn_add(gfn, i)));
+                paging_mark_pfn_dirty(d, _pfn(gfn_x(gfn) + i));
+            }
         }
     }
     else