x86/acpi: Prevent LAPIC id 0xff from being accounted

Yinghai reported that the recent changes to make the cpuid - nodeid
relationship permanent causes a cpuid ordering regression on a system which
has 2apic enabled..

The reason is that the ACPI local APIC parser has no sanity check for
apicid 0xff, which is an invalid id. So a CPU id for this invalid local
APIC id is allocated and therefor breaks the cpuid ordering.

Add a sanity check to acpi_parse_lapic() which ignores the invalid id.

Fixes: 8f54969dc8d6 ("x86/acpi: Introduce persistent storage for cpuid <-> apicid mapping")
Reported-by: Yinghai Lu <[email protected]>
Signed-off-by: Thomas Gleixner <[email protected]>
Cc: Gu Zheng <[email protected]>,
Cc: Tang Chen <[email protected]>
Cc: [email protected],
Cc: [email protected]
Cc: Tony Luck <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Lv Zheng <[email protected]>,
Cc: [email protected]
Cc: [email protected]
Link: https://lkml.kernel.org/r/CAE9FiQVQx6FRXT-RdR7Crz4dg5LeUWHcUSy1KacjR+JgU_vGJg@mail.gmail.com

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