--- a/src/hotspot/share/runtime/vmThread.cpp	Thu Aug 15 14:00:36 2019 +0800
+++ b/src/hotspot/share/runtime/vmThread.cpp	Thu Aug 15 09:06:42 2019 +0200
@@ -677,7 +677,7 @@
     }
 
     // Setup VM_operations for execution
-    op->set_calling_thread(t, Thread::get_priority(t));
+    op->set_calling_thread(t);
 
     // It does not make sense to execute the epilogue, if the VM operation object is getting
     // deallocated by the VM thread.
@@ -726,7 +726,7 @@
         fatal("Nested VM operation %s requested by operation %s",
               op->name(), vm_operation()->name());
       }
-      op->set_calling_thread(prev_vm_operation->calling_thread(), prev_vm_operation->priority());
+      op->set_calling_thread(prev_vm_operation->calling_thread());
     }
 
     EventMark em("Executing %s VM operation: %s", prev_vm_operation ? "nested" : "", op->name());