--- old/src/os_cpu/linux_s390/vm/atomic_linux_s390.hpp	2017-08-22 15:27:17.141186894 +0200
+++ new/src/os_cpu/linux_s390/vm/atomic_linux_s390.hpp	2017-08-22 15:27:16.973186900 +0200
@@ -191,6 +191,8 @@
   return upd;
 }
 
+template<>
+struct Atomic::PlatformAdd<2>: Atomic::AddShortUsingInt {};
 
 //------------
 // Atomic::inc