diff -r fbfcdc5bf694 -r 912b79d983d9 src/hotspot/os_cpu/linux_s390/os_linux_s390.cpp
--- a/src/hotspot/os_cpu/linux_s390/os_linux_s390.cpp	Fri Oct 26 08:23:52 2018 -0400
+++ b/src/hotspot/os_cpu/linux_s390/os_linux_s390.cpp	Fri Oct 19 09:39:29 2018 +0200
@@ -95,9 +95,6 @@
   return (char*) -1;
 }
 
-// OS specific thread initialization.
-void os::initialize_thread(Thread* thread) { }
-
 // Frame information (pc, sp, fp) retrieved via ucontext
 // always looks like a C-frame according to the frame
 // conventions in frame_s390.hpp.