On Sun, 12 Mar 2006, Andrew Morton wrote:
Krzysztof Oledzki <[email protected]> wrote:
On Sat, 11 Mar 2006, Andrew Morton wrote:
> Krzysztof Oledzki <[email protected]> wrote:
>>
>> After upgrading to 2.6.16-rc6 I noticed this strange message:
>>
>> More than 8 CPUs detected and CONFIG_X86_PC cannot handle it.
>> Use CONFIG_X86_GENERICARCH or CONFIG_X86_BIGSMP.
>>
>> This is a Dell PowerEdge SC1425 with two P4 Xeons with HT enabled (so with
>> totoal of 4 logical CPUs).
>
> Please send full dmesg output for the failing kernel, thanks.
Attached.
> Which is the most-recently-tested kernel which behaved correctly?
2.6.15.6
OK, thanks. I assume the machine's working OK?
Yes. So far no problems, only this warning.
From my reading, you have CONFIG_HOTPLUG_CPU enabled and the machine has an
APIC.
That is correct.
I'd expect that lots of people would hit that warning but for some
reason they don't - possibly because most APICs don't have sufficiently
high version numbers?
Anyway, various people cc'ed. I _think_ it's harmless, although the way in
which def_to_bigsmp propagates into the DMI and APIC code might be a
problem, depending upon config options.
Certainly the warning is incorrect, but I'm not sure what is the best thing
to do about it?
OK. Thank you.
Best regards,
Krzysztof Olędzki
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