diff --git a/arch/x86/include/asm/system.h b/arch/x86/include/asm/system.h
index 022a843..ecb544e 100644
--- a/arch/x86/include/asm/system.h
+++ b/arch/x86/include/asm/system.h
@@ -23,6 +23,7 @@
 struct tss_struct;
 void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p,
 		      struct tss_struct *tss);
+extern void show_regs_common(void);
 
 #ifdef CONFIG_X86_32