On Thu, 2013-09-05 at 14:37 +0200, Alexander Graf wrote: > Hrm, I think I'm starting to understand what this is about. So what we want is > > - timebase in guest > - timebase frequency in guest > - wall clock time in host > > That way the receiving end can then take the timebase and add (new_timebase - > old_timebase) * tb_freq to the guest's time base. > > Which gets me to the next question. Can we modify the tb frequency in guests?
No. It's architected at 512Mhz however since P7 I think. Not sure how we did before, it's possible that P6 was the same (at least it's sourced from more/less the same chip TOD facility). Cheers, Ben.