diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index f44c24b..2969c47 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -144,6 +144,7 @@
 #define KVM_REQ_IOAPIC_EOI_EXIT   28
 #define KVM_REQ_HV_RESET          29
 #define KVM_REQ_HV_EXIT           30
+#define KVM_REQ_HV_STIMER         31
 
 #define KVM_USERSPACE_IRQ_SOURCE_ID		0
 #define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID	1