diff -r 722c372fe201 linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c
--- a/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Sat Jul 16 16:45:24 2005
+++ b/linux-2.6-xen-sparse/drivers/xen/balloon/balloon.c	Mon Jul 18 17:30:46 2005
@@ -244,7 +244,9 @@
             if ( !PageHighMem(page) )
             {
                 v = phys_to_virt(pfn << PAGE_SHIFT);
+#ifdef CONFIG_XEN_SCRUB_PAGES
                 scrub_pages(v, 1);
+#endif
                 HYPERVISOR_update_va_mapping(
                     (unsigned long)v, __pte_ma(0), 0);
             }