diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 8544e2d2b00ef8..051fcf5472ab0d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1433,6 +1433,8 @@ void __init apic_intr_mode_init(void)
 		break;
 	case APIC_SYMMETRIC_IO_NO_ROUTING:
 		pr_info("APIC: Switch to symmetric I/O mode setup in no SMP routine\n");
+		upmode = true;
+		default_setup_apic_routing();
 		break;
 	}