--- a/test/jtreg-ext/requires/VMProps.java	Wed Nov 29 16:45:31 2017 -0800
+++ b/test/jtreg-ext/requires/VMProps.java	Tue Nov 28 09:47:04 2017 -0800
@@ -74,6 +74,7 @@
         map.put("vm.aot", vmAOT());
         // vm.cds is true if the VM is compiled with cds support.
         map.put("vm.cds", vmCDS());
+        map.put("vm.cds.custom.loaders", vmCDSForCustomLoaders());
         // vm.graal.enabled is true if Graal is used as JIT
         map.put("vm.graal.enabled", isGraalEnabled());
         map.put("docker.support", dockerSupport());
@@ -297,6 +298,19 @@
     }
 
     /**
+     * Check for CDS support for custom loaders.
+     *
+     * @return true if CDS is supported for customer loader by the VM to be tested.
+     */
+    protected String vmCDSForCustomLoaders() {
+        if (vmCDS().equals("true") && Platform.areCustomLoadersSupportedForCDS()) {
+            return "true";
+        } else {
+            return "false";
+        }
+    }
+
+    /**
      * Check if Graal is used as JIT compiler.
      *
      * @return true if Graal is used as JIT compiler.