--- arch/x86/kernel/apic/probe_64.c

+++ arch/x86/kernel/apic/probe_64.c

@@ -76,6 +76,13 @@ void __init default_setup_apic_routing(v

/* need to update phys_pkg_id */

apic->phys_pkg_id = apicid_phys_pkg_id;

}

+

+ /*

+ * Now that apic routing model is selected, configure the

+ * fault handling for intr remapping.

+ */

+ if (intr_remapping_enabled)

+ enable_drhd_fault_handling();

}

/* Same for both flat and physical. */