diff --git a/xen/arch/x86/domain.c b/xen/arch/x86/domain.c
index 28fefa1f81..f53ae5ff86 100644
--- a/xen/arch/x86/domain.c
+++ b/xen/arch/x86/domain.c
@@ -313,7 +313,6 @@ static unsigned int __init noinline _domain_struct_bits(void)
 struct domain *alloc_domain_struct(void)
 {
     struct domain *d;
-    unsigned int order = get_order_from_bytes(sizeof(*d));
 #ifdef CONFIG_BIGMEM
     const unsigned int bits = 0;
 #else
@@ -327,18 +326,10 @@ struct domain *alloc_domain_struct(void)
          bits = _domain_struct_bits();
 #endif
 
-
-#ifndef CONFIG_DEBUG_LOCK_PROFILE
     BUILD_BUG_ON(sizeof(*d) > PAGE_SIZE);
-#endif
-    d = alloc_xenheap_pages(order, MEMF_bits(bits));
+    d = alloc_xenheap_pages(0, MEMF_bits(bits));
     if ( d != NULL )
-    {
-        unsigned int sz;
-
-        for ( sz = 0; sz < (PAGE_SIZE << order); sz += PAGE_SIZE )
-            clear_page((void *)d + sz);
-    }
+        clear_page(d);
     return d;
 }