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Subject: Re: [PATCH 15/15] x86: Fix cpu_coregroup_mask to return correct
 cpumask on multi-node processors
From: Peter Zijlstra <peterz@infradead.org>
To: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Ingo Molnar <mingo@elte.hu>, linux-kernel@vger.kernel.org
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Date: Fri, 28 Aug 2009 14:50:27 +0200
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On Fri, 2009-08-28 at 14:03 +0200, Andreas Herrmann wrote:
> 
> > the opteron I have seems to be two
> > single cores
> 
> Really? I am not aware of such a thing.
> 
> Can you check how many sets of northbridge functions do you have?  If
> you would have two dies in one package then you should see one set of
> PCI functions at bus 0 device 24 and a second set of PCI functions at
> bus 0 device 25, e.g.
> 
>   # lspci -d 1022:
>   ...
>   00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] Family 10h
>           [Opteron, Athlon64, Sempron] HyperTransport Configuration [1022:1200]
>   ...
>   00:19.0 Host bridge [0600]: Advanced Micro Devices [AMD] Family 10h
>           [Opteron, Athlon64, Sempron] HyperTransport Configuration [1022:1200]
>   ... 

Doesn't appear to be the case, maybe I mis-remembered the various masks
for that machine.

Oh well ;-)