Messages in this thread | | | From | Pratyush Yadav <> | Subject | Re: [PATCH 1/2] acpi: processor: allow fixing up the frequency for a performance state | Date | Thu, 22 Dec 2022 23:18:04 +0100 |
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On Thu, Dec 22 2022, Rafael J. Wysocki wrote: > On Wed, Dec 21, 2022 at 4:52 PM Pratyush Yadav <ptyadav@amazon.de> wrote: >> >> In some cases the ACPI table can have an incorrect frequency populated >> for a performance state. For example, in Intel platforms, the Turbo >> frequency is just listed as +1 MHz above the max non-turbo frequency. > > Which is a known convention based on compatibility with some older OSes.
Interesting. I did not know that.
> >> The frequency can actually go much higher based on various factors like >> temperature, voltage, etc. > > It can. > >> Allow drivers like intel_pstate to fix up performance state frequencies >> with the actual maximum value. > > Why do you want to do that?
To be able to use my processors at the full frequency they are capable of. See [0] for more details.
[0] https://lore.kernel.org/linux-pm/mafs0k02jd8oh.fsf_-_@dev-dsk-ptyadav-1c-37607b33.eu-west-1.amazon.com/
> [...]
-- Regards, Pratyush Yadav
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