Re: [PATCH V2 1/5] ara virt interface of perf to support kvm guest os statistics collection in guest os

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On Tue, 2010-06-22 at 12:53 +0300, Avi Kivity wrote:


> > /me has no clue what virtual MSRs are,
> 
> MSRs that are not defined by the hardware, but instead by the
> hypervisor.
> 
Uhm, but the PMU MSRs are all defined by the hardware, if you move the
PMU MSRs around nothing will work.. *confusion*

> When emulating the hardware PMU we can be clever at times and allow 
> RDPMC not to trap. 

Sure, not disagreeing with that, still the generic case is to trap, so
lets first get that to work and then try and be smart :-)
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