--- a/src/hotspot/cpu/zero/globalDefinitions_zero.hpp	Tue Mar 13 15:29:55 2018 -0700
+++ b/src/hotspot/cpu/zero/globalDefinitions_zero.hpp	Tue Mar 13 18:22:53 2018 +0000
@@ -26,6 +26,10 @@
 #ifndef CPU_ZERO_VM_GLOBALDEFINITIONS_ZERO_HPP
 #define CPU_ZERO_VM_GLOBALDEFINITIONS_ZERO_HPP
 
+#ifdef _LP64
+#define SUPPORTS_NATIVE_CX8
+#endif
+
 #include <ffi.h>
 
 // Indicates whether the C calling conventions require that