apic_disable_vector
void apic_disable_vector(u_int apic_id, u_int vector);
apic_disable_vector(old_id, old_vector);
apic_disable_vector(intpin->io_cpu, vector);
apic_disable_vector(msi->msi_cpu, msi->msi_vector + i);
apic_disable_vector(old_id, old_vector + i);