diff -r fcad92f425c5 -r 56bf71d64d51 src/hotspot/os_cpu/linux_s390/atomic_linux_s390.hpp
--- a/src/hotspot/os_cpu/linux_s390/atomic_linux_s390.hpp	Mon Nov 25 14:06:13 2019 +0100
+++ b/src/hotspot/os_cpu/linux_s390/atomic_linux_s390.hpp	Mon Nov 25 12:22:13 2019 +0100
@@ -335,4 +335,11 @@
   return old;
 }
 
+template<size_t byte_size>
+struct Atomic::PlatformOrderedLoad<byte_size, X_ACQUIRE>
+{
+  template <typename T>
+  T operator()(const volatile T* p) const { T t = *p; OrderAccess::acquire(); return t; }
+};
+
 #endif // OS_CPU_LINUX_S390_ATOMIC_LINUX_S390_HPP