Re: APIC version and 8-bit APIC IDs

[Martin Wilck]

Andi Kleen wrote:

> > on the Intel Xeon MP systems, too,
>
> How so? The XAPIC version check should work there.

ACPI: LAPIC (acpi_id[0x11] lapic_id[0x21] enabled)
Processor #33 15:4 APIC version 16
ACPI: LAPIC (acpi_id[0x12] lapic_id[0x26] enabled)
Processor #38 15:4 APIC version 16

This is a boot message excerpt from one of the "Potomac" systems we 
have. x86_64 kernel without xapic check, therefore the CPUs are 
activated, but they wouldn't be on recent i386.

> I fixed that in the 64bit version already, but not in 32bit yet.
> Yes, the value of the APIC IDs must be used as indicator.

Great.
Regards, Martin


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Martin Wilck                Phone: +49 5251 8 15113
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