diff -r cd193fa265b8 tools/libxl/libxl.c
--- a/tools/libxl/libxl.c	Tue Oct 26 12:22:52 2010 +0100
+++ b/tools/libxl/libxl.c	Wed Oct 27 13:47:05 2010 +0200
@@ -2927,6 +2927,11 @@
         abort = 1;
         goto out;
     }
+    if (relative)
+        new_target_memkb = current_target_memkb + target_memkb;
+    else
+        new_target_memkb = target_memkb;
+
     if (!domid && new_target_memkb < LIBXL_MIN_DOM0_MEM) {
         LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
                 "new target for dom0 is below the minimum threshold\n");
@@ -2934,10 +2939,6 @@
         goto out;
     }
 
-    if (relative)
-        new_target_memkb = current_target_memkb + target_memkb;
-    else
-        new_target_memkb = target_memkb;
     if (new_target_memkb > memorykb) {
         LIBXL__LOG(ctx, LIBXL__LOG_ERROR,
                 "memory_dynamic_max must be less than or equal to"