On Mon, Mar 15, 2021 at 11:03 PM Dylanger Daly <dylangerd...@protonmail.com> wrote: > > Hi Xen Developers, > > 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`
In dom0, do `modprobe xen-acpi-processor` and see if `xenpm get-cpufreq-para` works. Xen needs Dom0 to load some ACPI info before xenpm can work. Are you running Qubes? For some reason xen-acpi-processor doesn't load there automatically. > 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). > > However acpi-cpufreq doesn't load, when trying to insmod it I get the > following error `insmod: ERROR: could not insert module acpi-cpufreq.ko: No > such device` > > I can't seem to see anything related to Xen relinquishing control to dom0 in > Xen's console, any help would be appreciated I haven't tried using cpufreq=dom0-kernel, so I can't help here. Regards, Jason