diff --git a/sys/amd64/include/vmm.h b/sys/amd64/include/vmm.h
--- a/sys/amd64/include/vmm.h
+++ b/sys/amd64/include/vmm.h
@@ -497,6 +497,7 @@
 	VM_CAP_RDPID,
 	VM_CAP_RDTSCP,
 	VM_CAP_IPI_EXIT,
+	VM_CAP_MASK_HWINTR,
 	VM_CAP_MAX
 };
 
diff --git a/sys/amd64/vmm/intel/vmx.c b/sys/amd64/vmm/intel/vmx.c
--- a/sys/amd64/vmm/intel/vmx.c
+++ b/sys/amd64/vmm/intel/vmx.c
@@ -1439,6 +1439,10 @@
 	uint64_t rflags, entryinfo;
 	uint32_t gi, info;
 
+	if (vcpu->cap.set & (1 << VM_CAP_MASK_HWINTR)) {
+		return;
+	}
+
 	if (vcpu->state.nextrip != guestrip) {
 		gi = vmcs_read(VMCS_GUEST_INTERRUPTIBILITY);
 		if (gi & HWINTR_BLOCKING) {
@@ -3634,6 +3638,9 @@
 		vlapic = vm_lapic(vcpu->vcpu);
 		vlapic->ipi_exit = val;
 		break;
+	case VM_CAP_MASK_HWINTR:		
+		retval = 0;
+		break;
 	default:
 		break;
 	}
diff --git a/usr.sbin/bhyve/gdb.c b/usr.sbin/bhyve/gdb.c
--- a/usr.sbin/bhyve/gdb.c
+++ b/usr.sbin/bhyve/gdb.c
@@ -801,6 +801,9 @@
 	if (vs->stepping) {
 		error = vm_set_capability(vcpu, VM_CAP_MTRAP_EXIT, 1);
 		assert(error == 0);
+
+		error = vm_set_capability(vcpu, VM_CAP_MASK_HWINTR, 1);
+		assert(error == 0);
 	}
 }
 
@@ -853,6 +856,8 @@
 		vs->stepping = false;
 		vs->stepped = true;
 		vm_set_capability(vcpu, VM_CAP_MTRAP_EXIT, 0);
+		vm_set_capability(vcpu, VM_CAP_MASK_HWINTR, 0);
+
 		while (vs->stepped) {
 			if (stopped_vcpu == -1) {
 				debug("$vCPU %d reporting step\n", vcpuid);