[Bug 2090852] Re: [SRU] power: intel_pstate: HWP interrupt support for maximum ratio changed

This bug is awaiting verification that the linux/6.8.0-53.55 kernel in
-proposed solves the problem. Please test the kernel and update this bug
with the results. If the problem is solved, change the tag
'verification-needed-noble-linux' to 'verification-done-noble-linux'. If
the problem still exists, change the tag 'verification-needed-noble-
linux' to 'verification-failed-noble-linux'.


If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.


See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-noble-linux-v2 verification-needed-noble-linux

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https://bugs.launchpad.net/bugs/2090852

Title:
[SRU] power: intel_pstate: HWP interrupt support for maximum ratio
changed

Status in linux package in Ubuntu:
Invalid
Status in linux source package in Noble:
Fix Committed

Bug description:
This is a public version of: https://bugs.launchpad.net/bugs/2078898

[ Impact ]

 * Performance improvement for intel hardware with dynamic HWP
(Hardware P-States)

[ Fix ]

Upstream commits support dynamic HWP:
  7ea81936b853 x86/cpufeatures: Add HWP highest perf change feature flag
  d845cd901b28 cpufreq: intel_pstate: Support highest performance change interrupt

[ Test Plan ]

* check on supported hardware that the correct max cpu freq is
detected

[ Where problems could occur ]

 * Regression on intel CPU frequency

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