src/hotspot/share/memory/metaspace.cpp

@@ -3322,10 +3322,28 @@
   MinMetaspaceExpansion = align_down_bounded(MinMetaspaceExpansion, _commit_alignment);
   MaxMetaspaceExpansion = align_down_bounded(MaxMetaspaceExpansion, _commit_alignment);
 
   CompressedClassSpaceSize = align_down_bounded(CompressedClassSpaceSize, _reserve_alignment);
   set_compressed_class_space_size(CompressedClassSpaceSize);
+
+  /* Initial virtual space size will be calculated at global_initialize() */
+  size_t min_metaspace_sz =
+                   VIRTUALSPACEMULTIPLIER * InitialBootClassLoaderMetaspaceSize;
+  if (UseCompressedClassPointers) {
+    if ((min_metaspace_sz + CompressedClassSpaceSize) >  MaxMetaspaceSize) {
+      if (min_metaspace_sz >= MaxMetaspaceSize) {
+        vm_exit_during_initialization("MaxMetaspaceSize is too small.");
+      } else {
+        FLAG_SET_ERGO(size_t, CompressedClassSpaceSize,
+                                      MaxMetaspaceSize - min_metaspace_sz);
+      }
+    }
+  } else if (min_metaspace_sz >= MaxMetaspaceSize) {
+    FLAG_SET_ERGO(size_t, InitialBootClassLoaderMetaspaceSize,
+                                                        min_metaspace_sz);
+  }
+
 }
 
 void Metaspace::global_initialize() {
   MetaspaceGC::initialize();