diff --git a/include/linux/kexec.h b/include/linux/kexec.h
index c2478a3..61d429b 100644
--- a/include/linux/kexec.h
+++ b/include/linux/kexec.h
@@ -116,6 +116,7 @@
 					unsigned long nr_segments,
 					struct kexec_segment __user *segments,
 					unsigned long flags);
+extern void __weak arch_kexec(void);
 extern int kernel_kexec(void);
 #ifdef CONFIG_COMPAT
 extern asmlinkage long compat_sys_kexec_load(unsigned long entry,