--- a/hotspot/src/share/vm/gc/shared/collectorPolicy.cpp	Mon Mar 14 09:07:34 2016 +0000
+++ b/hotspot/src/share/vm/gc/shared/collectorPolicy.cpp	Mon Mar 14 11:55:51 2016 +0100
@@ -96,6 +96,9 @@
   }
 
   // Check heap parameter properties
+  if (MaxHeapSize < 2 * M) {
+    vm_exit_during_initialization("Too small maximum heap");
+  }
   if (InitialHeapSize < M) {
     vm_exit_during_initialization("Too small initial heap");
   }

--- a/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java	Mon Mar 14 09:07:34 2016 +0000
+++ b/hotspot/test/gc/arguments/TestMaxHeapSizeTools.java	Mon Mar 14 11:55:51 2016 +0100
@@ -1,5 +1,5 @@
 /*
-* Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved.
+* Copyright (c) 2013, 2016, 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
@@ -112,10 +112,12 @@
   }
 
   private static void checkInvalidMinInitialHeapCombinations(String gcflag) throws Exception {
+    expectError(new String[] { gcflag, "-XX:InitialHeapSize=1023K", "-version" });
     expectError(new String[] { gcflag, "-Xms64M", "-XX:InitialHeapSize=32M", "-version" });
   }
 
   private static void checkValidMinInitialHeapCombinations(String gcflag) throws Exception {
+    expectValid(new String[] { gcflag, "-XX:InitialHeapSize=1024K", "-version" });
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms4M", "-version" });
     expectValid(new String[] { gcflag, "-Xms4M", "-XX:InitialHeapSize=8M", "-version" });
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-Xms8M", "-version" });
@@ -124,11 +126,13 @@
   }
 
   private static void checkInvalidInitialMaxHeapCombinations(String gcflag) throws Exception {
+    expectError(new String[] { gcflag, "-XX:MaxHeapSize=2047K", "-version" });
     expectError(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=8M", "-version" });
     expectError(new String[] { gcflag, "-XX:InitialHeapSize=8M", "-XX:MaxHeapSize=4M", "-version" });
   }
 
   private static void checkValidInitialMaxHeapCombinations(String gcflag) throws Exception {
+    expectValid(new String[] { gcflag, "-XX:MaxHeapSize=2048K", "-version" });
     expectValid(new String[] { gcflag, "-XX:InitialHeapSize=4M", "-XX:MaxHeapSize=8M", "-version" });
     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=8M", "-XX:InitialHeapSize=4M", "-version" });
     expectValid(new String[] { gcflag, "-XX:MaxHeapSize=4M", "-XX:InitialHeapSize=4M", "-version" });