[Bug 219431] [6.12] amd-pstate / Ryzen 5xxx (Zen 3, Vermeer): Could not retrieve highest performance (-19)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=219431

--- Comment #5 from Mario Limonciello (AMD) (mario.limonciello@amd.com) ---
It looks like this message is being emitted specifically from the calls in
amd_set_max_freq_ratio().

You system is a shared memory design not a MSR design.
"[  +0.000016] amd_pstate: AMD CPPC shared memory based functionality is
supported"

This looks like the calltrace:
amd_set_max_freq_ratio
->amd_get_boost_ratio_numerator
->->amd_detect_prefcore
->->->amd_get_highest_perf
->->->->cppc_get_highest_perf
->->->->->cppc_get_perf

The first error you see is "No CPC descriptor for CPU:1" which comes from
cppc_get_perf().

Can you please share your acpidump?  It sure seems like a BIOS bug to me.

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