[Bug 2106275] Re: Enable OOB P-state control for Intel Sierra Forest/Granite Rapids

** Changed in: linux (Ubuntu)
Importance: Undecided => Medium

** Changed in: linux (Ubuntu Noble)
Importance: Undecided => Medium

** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Vinicius Peixoto (vpeixoto)

** Changed in: linux (Ubuntu Noble)
Assignee: (unassigned) => Vinicius Peixoto (vpeixoto)

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https://bugs.launchpad.net/bugs/2106275

Title:
Enable OOB P-state control for Intel Sierra Forest/Granite Rapids

Status in linux package in Ubuntu:
New
Status in linux source package in Noble:
New

Bug description:
[Impact]

The intel_pstate module should not be loaded when OOB mode for P-state
control is enabled, but currently the Noble kernel is only able to
detect OOB mode up to Emerald Rapids CPUs. This patch enables
detection for Granite Rapids/Sierra Forest CPUs.

[Fix]

Cherry pick 3ca2a3d1e727 ("cpufreq: intel_pstate: Support Granite
Rapids and Sierra Forest OOB mode") into the Noble tree.

[Test plan]

Build tested only.

[Where problems could occur]

Risk of regression seems very low, but problems here could manifest as
the intel_pstate driver misbehaving on Sierra Forest/Granite Rapids
systems.

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