--- a/src/hotspot/share/runtime/vmOperations.cpp	Mon Jun 24 16:51:23 2019 -0400
+++ b/src/hotspot/share/runtime/vmOperations.cpp	Mon Jun 24 22:38:17 2019 -0400
@@ -118,6 +118,18 @@
   }
 }
 
+void VM_Deoptimize::doit() {
+  // We do not want any GCs to happen while we are in the middle of this VM operation
+  ResourceMark rm;
+  DeoptimizationMarker dm;
+
+  // Deoptimize all activations depending on marked nmethods
+  Deoptimization::deoptimize_dependents();
+
+  // Make the dependent methods not entrant
+  CodeCache::make_marked_nmethods_not_entrant();
+}
+
 void VM_MarkActiveNMethods::doit() {
   NMethodSweeper::mark_active_nmethods();
 }