diff --git a/[refs] b/[refs]
index 7d984cf9b6c1..3de9a3b0fc3e 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0ad5bce7409d681a5655c66e64bb0eb740b89c1f
+refs/heads/master: 5670a43d710a12fcbbfaefd3991002768b488d82
diff --git a/trunk/arch/x86/xen/setup.c b/trunk/arch/x86/xen/setup.c
index b6acc3a0af46..d67901083888 100644
--- a/trunk/arch/x86/xen/setup.c
+++ b/trunk/arch/x86/xen/setup.c
@@ -42,7 +42,7 @@ char * __init xen_memory_setup(void)
 
 	e820.nr_map = 0;
 
-	e820_add_region(0, PFN_PHYS(max_pfn), E820_RAM);
+	e820_add_region(0, PFN_PHYS((u64)max_pfn), E820_RAM);
 
 	/*
 	 * Even though this is normal, usable memory under Xen, reserve