linux-kernel - Re: [RFC PATCH 0/4] Add processor to the ignore PSD override list

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Message-ID: <CAJZ5v0gXSN+JcakF6jwnUYgej=LRyYc_jCff07Nx=nGO1a3mfw@mail.gmail.com>
Date:   Mon, 7 Dec 2020 14:55:17 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Punit Agrawal <punitagrawal@...il.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Wei Huang <wei.huang2@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        Borislav Petkov <bp@...en8.de>,
        "the arch/x86 maintainers" <x86@...nel.org>
Subject: Re: [RFC PATCH 0/4] Add processor to the ignore PSD override list

On Fri, Dec 4, 2020 at 11:45 PM Punit Agrawal <punitagrawal@...il.com> wrote:
>
> Hi Rafael,
>
> Punit Agrawal <punitagrawal@...il.com> writes:
>
> > Hi,
> >
> > While looking into Giovanni's patches to enable frequency invariance
> > on AMD systems[0], I noticed an issue with initialising frequency
> > domain information on a recent AMD APU.
> >
> > Patch 1 refactors the test to ignore firmware provided frequency
> > domain into a separate function.
> >
> > Patch 2 adds said APU (Family: 0x17, Model: 0x60, Stepping: 0x01) to
> > the list of CPUs for which the PSD override is ignored. I am not quite
> > happy with having to special case a particular CPU but also couldn't
> > find any documentation to help identify the CPUs that don't need the
> > override.
>
> Are you be OK to pick the first two patches if there are no issues?

Please send them as non-RFC and change the name of override_acpi_psd()
to indicate that it is AMD-specific.

Thanks!