Re: [PATCH v5 12/20] x86: perf: intel_pt: Intel PT PMU driver

[Peter Zijlstra]

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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