Linux 6.14 To Bring An Important Improvement For AMD Preferred Core
DRANK

Being merged back in the Linux 6.9 kernel wasAMD Preferred Core support within the amd_pstate driverfor being able to communicate the "preferred" cores to the kernel for those that are able to reach a higher maximum frequency or otherwise be preferred over other CPU cores. For the upcoming Linux 6.14 merge window, an important set of patches are queued up for better positioning thisPreferred Corehandling.With Linux 6.14, the Linux kernel will be able to support dynamic preferred core rankings. The existing Linux kernel code around ITMT (Intel Turbo Boost Max Tech) code that is leveraged by AMD, the core rankings are treated as static. But with AMD Preferred Core the preferred core rankings can change dynamically at run-time. Thus a set of patches have been worked on by AMD in recent months for allowing the rankings to be dynamically updated within the kernel.The patch series working on this dynamic core ranking explains:"The ITMT infrastructure currently assumes ITMT rankings to be st…

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