In advance of the Linux 7.3 merge window opening, Linux power management subsystem maintainer Rafael Wysocki of Intel submitted all the power management, ACPI, and thermal control code. As not too much of a surprise, Intel and AMD driver updates dominate the power management changes for Linux 7.3.
On the Intel P-State CPU frequency scaling driver side there are changes around properly passing the maximum performance value, improved handling in the performance policy mode, cleaning up frequency value calculations, and even some improved hardware p