ACK: [PATCH 0/6] [SRU][k:linux] Fix AMD-PState driver for Genoa CPU

[Cory Todd]

On Mon, Nov 28, 2022 at 05:38:42PM +0100, Paolo Pisati 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 one
> additional documentation patch to make the entire set apply cleanly.
> 
> 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   | 98 ++++++++++++++++---
>  drivers/cpufreq/Kconfig.x86                   |  2 +-
>  drivers/cpufreq/amd-pstate.c                  | 49 +++++++---
>  4 files changed, 131 insertions(+), 29 deletions(-)
> 

Acked-by: Cory Todd <cory.todd at canonical.com>