lkml.org 
[lkml]   [2020]   [Nov]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[RFC PATCH 0/4] Add processor to the ignore PSD override list
Date
Hi,

While looking into Giovanni's patches to enable frequency invariance
on AMD systems[0], I noticed an issue with initialising frequency
domain information on a recent AMD APU.

Patch 1 refactors the test to ignore firmware provided frequency
domain into a separate function.

Patch 2 adds said APU (Family: 0x17, Model: 0x60, Stepping: 0x01) to
the list of CPUs for which the PSD override is ignored. I am not quite
happy with having to special case a particular CPU but also couldn't
find any documentation to help identify the CPUs that don't need the
override.

Patch 3 and 4 are somewhat independent and a first step towards
improving the situation with regards to the use of raw identifiers for
AMD processors throughout the kernel.

All feedback welcome.

Thanks,
Punit

[0] https://lore.kernel.org/linux-acpi/20201112182614.10700-1-ggherdovich@suse.cz/

Punit Agrawal (4):
cpufreq: acpi-cpufreq: Re-factor overriding ACPI PSD
cpufreq: acpi-cpufreq: Add processor to the ignore PSD override list
x86/cpu: amd: Define processor families
cpufreq: acpi-cpufreq: Use identifiers for AMD processor family

arch/x86/include/asm/amd-family.h | 18 ++++++++++++++++++
arch/x86/include/asm/cpu_device_id.h | 2 ++
drivers/cpufreq/acpi-cpufreq.c | 24 +++++++++++++++++++++---
3 files changed, 41 insertions(+), 3 deletions(-)
create mode 100644 arch/x86/include/asm/amd-family.h

--
2.29.2

\
 
 \ /
  Last update: 2020-11-25 15:49    [W:0.181 / U:0.892 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site