AMD has recently begun the process of integrating its forthcoming Zen 5 microarchitecture-based processors, also referred to as Family 1Ah or Family 26, into Linux. 

This action is seen as a precursor to the commercial release of these processors, as evidenced by patch submissions and reportage from Phoronix. This early activity provides a glimpse into AMD's next-generation server CPUs, which are built on this new microarchitecture.

The initial batch of patches, submitted last Thursday, introduced new PCI IDs for AMD's Family 26 (1Ah) processors. Specifically, this includes models ranging from 00 to 31 and 64 to 79 (00h - 1Fh and 40h - 4Fh). In addition, thermal sensor support for the k10temp driver and the AMD64 EDAC driver for memory error detection and correction has been included in these patches.

The EDAC driver patch for Family 26 processors suggests that these CPUs will support a maximum of 12 memory channels. This aligns with the memory channel support seen in AMD's Genoa and Bergamo CPUs. The question as to whether Zen 5-based processors will persist in using AMD's current server platform or migrate to a new one remains open. \

Although these patches do not provide comprehensive details about AMD's future Zen 5-based Ryzen and EPYC processors, they do indicate AMD's plans to test and eventually commercially release these CPUs. AMD has officially stated that Zen 5-based processors will be incorporated into the Ryzen 8000 series, with a planned release in 2024. 

AMD Initiates Zen 5 Preparation by Sending Linux Patches