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[Xen-devel] Re: [PATCH][RFC][2/2] x86 SMP: enables core-pair topology de

from [George Dunlap]

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To:	Wei Huang <wei.huang2@xxxxxxx>
Subject:	[Xen-devel] Re: [PATCH][RFC][2/2] x86 SMP: enables core-pair topology detection for AMD CPUs
From:	George Dunlap <george.dunlap@xxxxxxxxxx>
Date:	Mon, 27 Jun 2011 12:10:41 +0100
Cc:	George Dunlap <George.Dunlap@xxxxxxxxxxxxx>, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Keir Fraser <keir.xen@xxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>
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On Thu, 2011-06-23 at 23:52 +0100, Wei Huang wrote:
> x86: AMD core-pair topology detection code
> 
> This patch is to support core-pair topology introduced by AMD CPUs, 
> which introduces a new concept of [core, compute unit]. There is a new 
> feature bit for topology extension in CPUID:0x80000001. Also a new CPUID 
> 0x8000001E is introduced for CPU topology enumeration. This patch 
> collects the sibling information from the new CPUID and will be stored 
> in the sibling map in Xen hypervisor.
> 
> Signed-off-by: Wei Huang <wei.huang2@xxxxxxx>
> 
> 

Can't comment on the code itself (not my area), but wrt to effects it
will have on the Xen scheduler:

Acked-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx>


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