8316445: Mark com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java as vm.flagless

Reviewed-by: cjplummer, sspitsyn

test/jdk/TEST.ROOT

@@ -53,6 +53,7 @@ requires.extraPropDefns.vmOpts = \
 requires.properties= \
     sun.arch.data.model \
     java.runtime.name \
+    vm.flagless \
     vm.gc.G1 \
     vm.gc.Serial \
     vm.gc.Parallel \

test/jdk/com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2023, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,6 +25,7 @@
  * @test
  * @bug 8028994
  * @author Staffan Larsen
+ * @requires vm.flagless
  * @library /test/lib
  * @modules jdk.attach/sun.tools.attach
  *          jdk.management

test/jtreg-ext/requires/VMProps.java

@@ -689,15 +689,19 @@ public class VMProps implements Callable<Map<String, String>> {
         // check -X flags
         var ignoredXFlags = Set.of(
                 // default, yet still seen to be explicitly set
-                "mixed"
+                "mixed",
+                // -XmxmNNNm added by run-test framework for non-hotspot tests
+                "mx"
         );
         result &= allFlags.stream()
                           .filter(s -> s.startsWith("-X") && !s.startsWith("-XX:"))
                           // map to names:
-                              // remove -X
-                              .map(s -> s.substring(2))
-                              // remove :.* from flags with values
-                              .map(s -> s.contains(":") ? s.substring(0, s.indexOf(':')) : s)
+                          // remove -X
+                          .map(s -> s.substring(2))
+                          // remove :.* from flags with values
+                          .map(s -> s.contains(":") ? s.substring(0, s.indexOf(':')) : s)
+                          // remove size like 4G, 768m which might be set for non-hotspot tests
+                          .map(s -> s.replaceAll("(\\d+)[mMgGkK]", ""))
                           // skip known-to-be-there flags
                           .filter(s -> !ignoredXFlags.contains(s))
                           .findAny()