On Thu, Dec 3, 2015 at 12:14 PM, Andi Kleen <[email protected]> wrote:
>
> > /* INST_RETIRED.ANY_P, inv=1, cmask=16 (cycles:p). */
> > INTEL_FLAGS_EVENT_CONSTRAINT(0x108000c0, 0x01),
> > + /* Allow all events as PEBS with no flags */
> > + INTEL_ALL_EVENT_CONSTRAINT(0, 0x1),
>
> I don't think this is really needed (no extra PEBS events), but ok it
> shouldn't
> hurt either.
>
Has to do with consistent behavior. Do not get an error if trying PEBS
on non-PEBS
event, like for the other CPUs.
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