diff --git a/qemu/include/exec/exec-all.h b/qemu/include/exec/exec-all.h
index 4b9cee43..cb1732b0 100644
--- a/qemu/include/exec/exec-all.h
+++ b/qemu/include/exec/exec-all.h
@@ -55,6 +55,18 @@ TranslationBlock *tb_gen_code(CPUState *cpu,
                               target_ulong pc, target_ulong cs_base,
                               uint32_t flags,
                               int cflags);
+#if defined(CONFIG_USER_ONLY)
+void cpu_list_lock(void);
+void cpu_list_unlock(void);
+#else
+static inline void cpu_list_unlock(void)
+{
+}
+static inline void cpu_list_lock(void)
+{
+}
+#endif
+
 void cpu_exec_init(CPUState *env, void *opaque);
 
 void QEMU_NORETURN cpu_loop_exit(CPUState *cpu);