Hi,

> 2) the TSC would have to be used as a clocksource.  You don't know the 
> frequency which is the first problem with using the TSC but some systems 
> have a TSC that changes frequencies.

Also note the tsc may stop ticking if the CPU goes sleep in C3, which
IMHO makes the tsc almost useless as clocksource for guests ...

cheers,
  Gerd


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