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

Public bug reported:

[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.

** Affects: linux (Ubuntu)
Importance: Undecided
Status: New

** Affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New

** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New

** Description changed:

[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.
-
- [Where problems could occur]
-
- Low regression risk

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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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