acpi_cpu1 attach returned 6 on single cpu system

[Mipam]

Hi,

I am running 5.2.1-p11 on a p3 system.
I commented options SMP in the kernel config.
However, i still get:

acpi_cpu1: <CPU> on acpi0
device_probe_and_attach: acpi_cpu1 attach returned 6

In dmesg. I didnt comment APIC
#options        SMP                     # Symmetric MultiProcessor Kernel
device          apic                    # I/O APIC

Should i also comment apic?
How do i get rid of these attempts since i only have one cpu anyway?
Bye,

Mipam.