Hi Reinette,
On 1/8/26 09:02, Reinette Chatre wrote:
Dear Shuah,
Could you please consider this series for inclusion?
Thank you very much.
Reinette
On 12/16/25 7:04 PM, Xiaochen Shen wrote:
The resctrl selftest currently exhibits several failures on Hygon CPUs
due to missing vendor detection and edge-case handling specific to
Hygon's architecture.
This patch series addresses three distinct issues:
1. A division-by-zero crash in SNC detection on some platforms (e.g.,
Hygon).
2. Missing CPU vendor detection, causing the test to fail with
"# Can not get vendor info..." on Hygon CPUs.
3. Incorrect handling of non-contiguous CBM support on Hygon CPUs.
These changes enable resctrl selftest to run successfully on
Hygon CPUs that support Platform QoS features.
Maintainer notes:
-----------------
Patch 1: selftests/resctrl: Fix a division by zero error on Hygon
- This is a candidate for backport with "Fixes:" tag.
Patch 2: selftests/resctrl: Define CPU vendor IDs as bits to match usage
- This is *not* a candidate for backport since it is an enhancement and
preparatory patch for patch 3.
Patch 3: selftests/resctrl: Add CPU vendor detection for Hygon
Patch 4: selftests/resctrl: Fix non-contiguous CBM check for Hygon
- Even though they are fixes they are *not* candidates for backport
since they are based on another patch series (x86/resctrl: Fix
Platform QoS issues for Hygon) which is in process of being added to
resctrl.
-----------------
Applied to linux-kselftest next branch for Linux 6.20-rc1
thanks,
-- Shuah
