--- old/src/os_cpu/linux_aarch64/vm/atomic_linux_aarch64.hpp	2017-07-20 11:32:07.144997270 +0200
+++ new/src/os_cpu/linux_aarch64/vm/atomic_linux_aarch64.hpp	2017-07-20 11:32:07.056997273 +0200
@@ -61,6 +61,13 @@
   return res;
 }
 
+template <>
+inline Atomic::CanonicalPointer Atomic::specialized_xchg<Atomic::CanonicalPointer>(Atomic::CanonicalPointer exchange_value, volatile Atomic::CanonicalPointer* dest) {
+  Atomic::CanonicalPointer res = __sync_lock_test_and_set (dest, exchange_value);
+  FULL_MEM_BARRIER;
+  return res;
+}
+
 template <typename T> T generic_cmpxchg(T exchange_value, volatile T* dest,
                                         T compare_value, cmpxchg_memory_order order)
 {