This is the best summary I could come up with:

This patch series is about allowing Core Performance Boost to be controlled when using their modern AMD P-State driver on Zen 2/3/4 Linux systems.

Core Performance Boost is for allowing the AMD CPUs to operate within their turbo/boost frequency range.

Most users will want to keep Core Performance Boost (Turbo Core) enabled, but those wanting to dynamically reduce/limit their processor power consumption will be able to toggle the support with these pending driver patches.

Writing “1” to /sys/devices/system/cpu/amd_pstate/cpb_boost will enable Core Performance Boost (CPB) on supported Ryzen CPUs while a value of “0” will disable the feature.

These patches stem from this bug report requesting the CPU frequency / boost control support for the amd-pstate driver.

Those interested in this support can find the Core Performance Boost patches on the mailing list going through review.

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