Re: [PATCH 2/2] cpufreq: acpi-cpufreq: Add processor to the ignore PSD override list

[Borislav Petkov]

On Fri, Dec 11, 2020 at 07:56:40AM +0900, Punit Agrawal wrote:
> Booting Linux on a Zen2 based processor (family: 0x17, model: 0x60,
> stepping: 0x1) shows the following message in the logs -
> 
>     acpi_cpufreq: overriding BIOS provided _PSD data
> 
> Although commit 5368512abe08 ("acpi-cpufreq: Honor _PSD table setting
> on new AMD CPUs") indicates that the override is not required for Zen3
> onwards, it seems that domain information can be trusted even on
> certain earlier systems. Update the check, to skip the override for
> Zen2 processors known to work without the override.
> 
> Signed-off-by: Punit Agrawal <punitagrawal@xxxxxxxxx>
> Cc: Wei Huang <wei.huang2@xxxxxxx>
> ---
>  drivers/cpufreq/acpi-cpufreq.c | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)

What about answers to those questions first?

https://lkml.kernel.org/r/20201208233216.GH27920@xxxxxxx

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette