--- old/test/hotspot/jtreg/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java	2019-03-19 17:31:59.336259742 +0800
+++ new/test/hotspot/jtreg/gc/class_unloading/TestCMSClassUnloadingEnabledHWM.java	2019-03-19 17:31:59.216259742 +0800
@@ -27,7 +27,7 @@
  * @test
  * @key gc
  * @bug 8049831
- * @requires !vm.graal.enabled
+ * @requires vm.gc.ConcMarkSweep & !vm.graal.enabled
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.management