[SRU] [OEM-5.10] [PATCH 0/2] Pull in AMD Ryzen CPPC fixes

[Kai-Heng Feng]

BugLink: https://bugs.launchpad.net/bugs/1928482

[Impact]
Incorrect frequencies are calculated, so the performance can be
affected.

[Fix]

[Test]
Without the fix:
$ lscpu | grep MHz
CPU MHz:                         1391.161
CPU max MHz:                     4806.6401
CPU min MHz:                     1600.0000

Witht he fix:
$ lscpu | grep MHz                                              
CPU MHz:                         1600.000     
CPU max MHz:                     4287.7920                                                           
CPU min MHz:                     1600.0000

[Where problems could occur]
This change is specific to limited AMD CPU models, unless there's a
typo on the numbers, regression risk is rather low.

Huang Rui (1):
  x86, sched: Fix the AMD CPPC maximum performance value on certain AMD
    Ryzen generations

Nathan Fontenot (1):
  x86, sched: Calculate frequency invariance for AMD systems

 arch/x86/include/asm/processor.h |  2 +
 arch/x86/include/asm/topology.h  |  5 +++
 arch/x86/kernel/cpu/amd.c        | 16 +++++++
 arch/x86/kernel/smpboot.c        | 76 +++++++++++++++++++++++++++++---
 drivers/acpi/cppc_acpi.c         |  7 +++
 drivers/cpufreq/acpi-cpufreq.c   |  6 ++-
 6 files changed, 106 insertions(+), 6 deletions(-)

-- 
2.31.1