Re: perf uncore & lkvm woes

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On 08/16/2012 03:19 PM, Peter Zijlstra wrote:
> On Thu, 2012-08-16 at 10:01 +0300, Pekka Enberg wrote:
>> Has anyone seen this? It's kvmtool/next with 3.6.0-rc1. Looks like we
>> are doing uncore_init() on virtualized CPU which breaks boot. 
> 
> I think you're the first.. I don't normally use kvm if I can at all
> avoid it.
> 
> But I think its a 'simple' matter of kvm not emulating the entire
> hardware. Afaik the uncore isn't enumerated and we simply assume MSR
> presence based on cpu model.

The Intel uncore doc does not specify how to check if uncore exist.
How about disabling uncore on virtualized CPU?

Regards
Yan, Zheng
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