Re: [Qemu-devel] [PATCH 1/2] [RFC] Make vmport report the processor speed

[François Revol]

> >> I don't think doing vmware esx in qemu in vmware us that much of a
> >> valid scenario right now ;).
> >>
> >> But I agree with anthony here - not telling vmware esx that it's
> >> running virtualized might be the best.
> >>
> >
> > As I said, it would not only benefit esx.
> > Haiku also would likely work much better this way, and possibly
> > BeOS
> > with a small driver to recalibrate it (I already rewrote such a
> > driver
> > once, but it was just forcing it using a value from some settings
> > that
> > were to be taken from a real machine).
>
> If you really need to get the TSC speed, it might be best to use
> official MSRs for that. The Intel documentation definitely includes
> such an MSR.

Oh, right then, more portable... though I wonder how they work with
speedstep...
Do we implement them yet ? grep got me some MSR_IA32_TSC in kvm.c, so I
suppose yes.
Oh, I didn't notice rdtscp, might be interesting to use instead for
Haiku.

François.