| Date | Wed, 22 Oct 2014 16:20:03 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver |
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On Mon, Oct 13, 2014 at 04:45:40PM +0300, Alexander Shishkin wrote: > +++ b/arch/x86/kernel/cpu/perf_event_intel.c > @@ -1528,6 +1528,14 @@ again: > } > > /* > + * Intel PT > + */ > + if (__test_and_clear_bit(55, (unsigned long *)&status)) { > + handled++; > + intel_pt_interrupt(); > + } > +
How does the PT interrupt interact with the regular PMI? In particular does it respect stuff like FREEZE_ON_PMI etc?
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