diff --git a/arch/x86/include/asm/kvm.h b/arch/x86/include/asm/kvm.h
index 4a5fe91..f02e87a 100644
--- a/arch/x86/include/asm/kvm.h
+++ b/arch/x86/include/asm/kvm.h
@@ -79,6 +79,7 @@
 #define KVM_IRQCHIP_PIC_MASTER   0
 #define KVM_IRQCHIP_PIC_SLAVE    1
 #define KVM_IRQCHIP_IOAPIC       2
+#define KVM_NR_IRQCHIPS          3
 
 /* for KVM_GET_REGS and KVM_SET_REGS */
 struct kvm_regs {