Re: [RFT] Fix for unhandled msr c0000081 problems under Intel cpus

* Avi Kivity <avi@xxxxxxxxxxxx> wrote:

> >actually, those MSRs are really architecture-defined for P6 family 
> >CPUs. So KVM/qemu should at least fake something there, or ignore it. 
> >These MSRs might be ticked by various existing kernels and 
> >distributions. Performance counters are ignored at the moment?
> 
> They are unimplemented, and tricky to implement.  Just swallowing the 
> wrmsr is easy, but it won't do the expected thing, whatever that is.

the expected thing is to get periodic watchdog NMIs injected - but it's 
not a big problem if that doesnt work, the watchdog code detects that. 
Crashing during bootup isnt too sexy though.

        Ingo

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