[PATCH v5 0/2] selftests/resctrl: Fix resctrl selftests issues on aarch64

[Richard Cheng <icheng@nvidia.com>]

This series fixes issues in the resctrl selftests on aarch64,
where they currently misreport failures.

Patch 1 adds aarch64 implementations of cl_flush() and sb() in
fill_buf.c so cache flushes are no longer silent no-ops.

Patch 2 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 v4:
- Drop v4 patch 1/3, which was applied to linux-kselftest/next.
- Rebase the remaining patches onto linux-kselftest/next and
  renumber v4 patches 2/3 and 3/3 as patches 1/2 and 2/2.
  No code changes to the remaining patches.

Richard Cheng (2):
  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    |  9 ++++++--
 tools/testing/selftests/resctrl/fill_buf.c    | 11 ++++++++++
 tools/testing/selftests/resctrl/resctrl.h     |  1 +
 .../testing/selftests/resctrl/resctrl_tests.c | 21 +++++++++++++++++++
 4 files changed, 40 insertions(+), 2 deletions(-)


base-commit: 30af56a227e27b892d34bc44c23298b5274913e3
-- 
2.43.0