On Fri, May 29, 2026 at 10:23:48AM +0800, Richard Cheng wrote: > This series fixes numerous issues in the resctrl selftests on aarch64, > where they currently misreport failures. > > Patch 1 skips L3_CAT at feature-check time when MPAM legitimately > reports every CBM bit as shareable, instead of failing the test. > > Patch 2 adds aarch64 implementations of cl_flush() and sb() in > fill_buf.c so cache flushes are no longer silent no-ops. > > Patch 3 teaches detect_vendor() about aarch64 (which exposes no > vendor_id in /proc/cpuinfo) and lets arch_supports_noncont_cat() > return true for ARM, fixing spurious L3_NONCONT_CAT failures. > > Changes since v2: > - Patch 1: add Ilpo's Reviewed-by. > - Patch 3: factor the aarch64 check into a detect_aarch64() helper > instead of an inline #ifdef in detect_vendor(). > - Fix the patch ordering in this cover letter to match the series. > > Richard Cheng (3): > selftests/resctrl: Skip L3_CAT when no exclusive cache portion exists > selftests/resctrl: Implement cl_flush() and sb() for aarch64 > selftests/resctrl: Recognise aarch64 as a vendor for L3_NONCONT_CAT > > tools/testing/selftests/resctrl/cat_test.c | 32 +++++++++++++++++-- > tools/testing/selftests/resctrl/fill_buf.c | 6 ++++ > tools/testing/selftests/resctrl/resctrl.h | 1 + > .../testing/selftests/resctrl/resctrl_tests.c | 21 ++++++++++++ > 4 files changed, 57 insertions(+), 3 deletions(-) > > -- > 2.43.0 >
Sorry forgot to cc Ilpo. +Cc. Ilpo Järvinen Best regards, Richard Cheng.
