Messages in this thread | | | Subject | Re: [PATCH v1 5/5] KVM: Expose a version 1 architectural PMU to guests | From | Peter Zijlstra <> | Date | Fri, 03 Jun 2011 16:41:53 +0200 |
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On Wed, 2011-05-11 at 11:55 -0400, Avi Kivity wrote: > +static u64 read_gp_pmc(struct kvm_pmu *pmu, struct kvm_pmc *pmc) > +{ > + u64 counter, enabled, running; > + > + counter = pmc->counter; > + > + if (pmc->perf_event) > + counter += perf_event_read_value(pmc->perf_event, > + &enabled, &running); > + > + /* FIXME: Scaling needed? */
Yeah, either that or use attr.pinned = 1, doing the latter will result in an error when the PMU is overloaded though.
> + return counter & pmu->counter_bitmask; > +}
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