AMD has released the latest Linux kernel PMC (Power Management Controller) driver patch, which mentions the yet-to-be-released "Family1Ah" processor. Phoronix reports that this is the first reference to AMD's next-generation "Zen5" microarchitecture in a PMC driver.
We have previously seen physical AMD PYC "Torino" server processors based on "Zen5", and AMD is likely distributing these processors to some of its largest data center customers for testing and evaluation before putting the final touches on them and giving the green light for mass production in 2024.
The patch itself contains only two lines of new code, describing a new sleep state called "s2idle". This is a software-defined system sleep state.
There are two versions of the EPYC "Torino" processor, one offering up to 128 "Zen5" cores and the other with up to 192 "Zen5c" cores, mainly for cloud computing applications.