Re: [RFC] perf/x86: PMU IRQ handler issues

[Andi Kleen]

On Wed, May 28, 2014 at 09:56:35PM +0200, Stephane Eranian wrote:
> On Wed, May 28, 2014 at 9:55 PM, Andi Kleen <ak@xxxxxxxxxxxxxxx> wrote:
> >
> >> Another explanation is that because we ACK the NMI early, we leave the
> >> door open to other interrupts, incl. NIC, and we are interrupting the execution
> >
> > PMI executes with interrupts off.
> >
> And that's coming from where?

The interrupt gate.

-Andi

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/