Re: AMD Ryzen 4000 (Mobile) cpufreq issues

[Jan Beulich <jbeulich@xxxxxxxx>]

On 16.03.2021 04:02, Dylanger Daly wrote:
> It appears AMD Ryzen 4000 based CPUs are not supported by `xenpm`, running 
> `xenpm get-cpufreq-states` returns nothing and `get-cpufreq-para` returns 
> `failed to get cpufreq parameter`
> 
> This was somewhat expected as Ryzen 4000 series CPUs are quite new, so as a 
> workaround I tried putting `cpufreq=dom0-kernel dom0_max_vcpus=8 
> dom0_vcpus_pin` onto CMDLINE, from what I've read this should essentially 
> pass control for CPU frequency scaling down to dom0's kernel (5.11.4).

Just fyi, seeing that you found a solution for your problem: I
firmly believe "cpufreq=dom0-kernel" should never have been
introduced. I'm not surprised at all if, as it looks, it stopped
working at some point.

Jan