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SubjectRe: [PATCH 5/7] thermal: intel: hfi: Enable notification interrupt
On Mon, Nov 08, 2021 at 10:01:04AM +0100, Peter Zijlstra wrote:
> On Fri, Nov 05, 2021 at 06:33:10PM -0700, Ricardo Neri wrote:
> > + /*
> > + * On most systems, all CPUs in the package receive a package-level
> > + * thermal interrupt when there is an HFI update. Since they all are
> > + * dealing with the same update (as indicated by the update timestamp),
> > + * it is sufficient to let a single CPU to acknowledge the update and
> > + * schedule work to process it.
> > + */
>
> That's pretty crap hardware behaviour. Is there really no way to steer
> these interrupts?

The HFI is a package-level thermal interrupt. Hence, all CPUs get it.
AFAIK there is no way to steer the interrupts.

Thanks and BR,
Ricardo

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