diff --git a/tools/arch/x86/include/uapi/asm/kvm.h b/tools/arch/x86/include/uapi/asm/kvm.h
index a6c327f8ad9e..2ef1f6513c68 100644
--- a/tools/arch/x86/include/uapi/asm/kvm.h
+++ b/tools/arch/x86/include/uapi/asm/kvm.h
@@ -295,6 +295,7 @@ struct kvm_debug_exit_arch {
 #define KVM_GUESTDBG_USE_HW_BP		0x00020000
 #define KVM_GUESTDBG_INJECT_DB		0x00040000
 #define KVM_GUESTDBG_INJECT_BP		0x00080000
+#define KVM_GUESTDBG_BLOCKIRQ		0x00100000
 
 /* for KVM_SET_GUEST_DEBUG */
 struct kvm_guest_debug_arch {