Linux 6.1 Picking Up A Few Missing Intel Raptor Lake IDs

While the Intel Core i9 13900K is running fast and well on Linux, a few Raptor Lake IDs have come to light that have been missing from various drivers and only now being addressed.

With Raptor Lake being very close in design to its Alder Lake predecessor, much of the Linux enablement support has been just about adding in new device IDs for the various Raptor Lake classes of processors. Most of those Raptor Lake IDs have been in the various Intel Linux drivers for a while, but a few stragglers have come to light.

Sent out earlier this week and already merged to mainline were platform-drivers-x86 fixes for Linux 6.1. As part of those fixes, Raptor Lake and Raptor Lake S device IDs are added to the PMC core driver. The PMC Core driver is for the Intel Power Management Controller and can be used for enabling transition to the SLPS0 state as well as debugging and other PMC features.

Meanwhile queued up yesterday via TIP's perf/urgent branch is adding Raptor Lake / Raptor Lake P / Raptor Lake S IDs to the RAPL perf events code. That perf/urgent pull request will likely be sent out this weekend.

So with Linux 6.1-rc3 on Sunday will be these few missing Raptor Lake device IDs but again aren't critical functionality and the new 13th Gen Core desktop CPUs are already otherwise happily running on recent Linux kernel versions unless seeking out these particular driver features. Intel engineers are usually very good at ensuring the very early Linux support for new hardware but in these cases it appears the new IDs just slipped under the rug.

Complementing my Core i9 13900K Linux review published this week, next week will be my Core i5 13600K Linux Raptor Lake tests.