linux-kernel - Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered

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Date:	Fri, 22 Feb 2008 20:10:39 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Yinghai Lu <yhlu.kernel@...il.com>
CC:	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] x86_64: make amd quad core 8 socket system not be clustered_box

Yinghai Lu wrote:
> On Fri, Feb 22, 2008 at 11:07 AM, Andi Kleen <andi@...stfloor.org> wrote:
>> Yinghai Lu wrote:
>>  > On Fri, Feb 22, 2008 at 11:00 AM, Andi Kleen <andi@...stfloor.org> wrote:
>>  >>  > so for that box [4, 0x23] still could be apic clustered? there is a hole [0,3]..
>>  >>
>>  >>  I meant holes between the CPUs only, not including the IO-APICs.
>>  >>
>>  >>
>>  >>  > is their box using AMD cpu or not?
>>  >>
>>  >>  Intel. AMD boxes don't really need clustered mode because they support
>>  >>  bigflat mode.
>>  >
>>  > So DMI or exclude AMD CPU?
>>
>>  Just check for holes between the cpus as I suggested earlier
> 
> how about their system that is not full populated with CPU?

I would expect the APIC IDs to be continuous then.

-Andi

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