diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index b6c8942..2c756fd 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -114,9 +114,13 @@
 /**
  * struct x86_platform_ops - platform specific runtime functions
  * @calibrate_tsc:		calibrate TSC
+ * @get_wallclock:		get time from HW clock like RTC etc.
+ * @set_wallclock:		set time back to HW clock
  */
 struct x86_platform_ops {
 	unsigned long (*calibrate_tsc)(void);
+	unsigned long (*get_wallclock)(void);
+	int (*set_wallclock)(unsigned long nowtime);
 };
 
 extern struct x86_init_ops x86_init;