Re: Non-exiting rdpmc on KVM guests?

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On Tue, Apr 21, 2015 at 02:10:53PM -0700, Andy Lutomirski wrote:

> One question is whether we care if we leak unrelated counters to the
> guest.  (We already leak them to unrelated user tasks, so this is
> hopefully not a big deal.  OTOH, the API is different for guests.)

Good question indeed. I really do not know.

> Another question is whether it's even worth trying to optimize this.

I think I just ran into a bunch of people who think virt pmu stuff is
important, but we'll have to see if they follow up with the effort of
actually doing the work.

My only concern is that they'll not make a mess of things ;-)
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