APPLIED [J]: [PATCH 0/8] [SRU][j:linux, j:linux-oem-5.17, f:linux-oem-5.14] Fix AMD-PState driver for Genoa CPU

[Luke Nowakowski-Krijger]

Applied to jammy:linux master-next,

Thanks :)

- Luke

On Mon, Nov 28, 2022 at 8:48 AM Paolo Pisati <paolo.pisati at canonical.com>
wrote:

> BugLink: https://bugs.launchpad.net/bugs/1998106
>
> [Impact]
>
> During AMD Genoa development, the datacenter team identified performance
> regressions that were caused by the amd-pstate driver. A first round of
> fixes
> already landed upstream (v6.1-rc7) in the amd-pstate driver, and should be
> backported to all the affected kernels.
>
> [Fix]
>
> Backport the upstream amd-pstate fixes:
>
>
> https://lore.kernel.org/linux-pm/20221117073541.3350600-1-Perry.Yuan@amd.com/T/#m4616d857ca472937d1e1d31131ddc3261fa17b2a
>
> [Regression potential]
>
> Clean cherry-picks of upstream fixes, impact a single driver (amd-pstate)
> and
> the new mode (passive) is disabled by default/opt-in. Cherry-picked three
> additional documentation patches to make the entire set apply cleanly.
>
> Jan Engelhardt (1):
>   Documentation: amd-pstate: grammar and sentence structure updates
>
> Jinzhou Su (1):
>   Documentation: amd-pstate: add tracer tool introduction
>
> Meng Li (1):
>   Documentation: amd-pstate: Add unit test introduction
>
> Perry Yuan (4):
>   cpufreq: amd-pstate: change amd-pstate driver to be built-in type
>   cpufreq: amd-pstate: add amd-pstate driver parameter for mode
>     selection
>   Documentation: amd-pstate: add driver working mode introduction
>   Documentation: add amd-pstate kernel command line options
>
> Wyes Karny (1):
>   cpufreq: amd-pstate: cpufreq: amd-pstate: reset MSR_AMD_PERF_CTL
>     register at init
>
>  .../admin-guide/kernel-parameters.txt         |  11 +
>  Documentation/admin-guide/pm/amd-pstate.rst   | 249 ++++++++++++------
>  drivers/cpufreq/Kconfig.x86                   |   2 +-
>  drivers/cpufreq/amd-pstate.c                  |  49 ++--
>  4 files changed, 219 insertions(+), 92 deletions(-)
>
> --
> 2.34.1
>
>
> --
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