diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 339eda3..18b4df8 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -37,6 +37,7 @@
 #define KVM_REQ_PENDING_TIMER      5
 #define KVM_REQ_UNHALT             6
 #define KVM_REQ_MMU_SYNC           7
+#define KVM_REQ_KVMCLOCK_UPDATE    8
 
 #define KVM_USERSPACE_IRQ_SOURCE_ID	0