The MBA test is skipped on every CPU that does not report "GenuineIntel", although everything the test needs is discoverable at runtime: an MB resource with a bandwidth monitor in resctrl, and a reference PMU backend to validate against. The vendor gate also can never match on architectures whose /proc/cpuinfo has no vendor_id line at all, such as arm64.
Drop .vendor_specific from the MBA test and rely on the feature check. On systems where any required piece is missing - including architectures for which no reference bandwidth backend exists yet - the test reports SKIP exactly as it did under the vendor gate. Signed-off-by: Richard Cheng <[email protected]> --- tools/testing/selftests/resctrl/mba_test.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/resctrl/mba_test.c b/tools/testing/selftests/resctrl/mba_test.c index 6c85107c32ee..22a887a1b4f8 100644 --- a/tools/testing/selftests/resctrl/mba_test.c +++ b/tools/testing/selftests/resctrl/mba_test.c @@ -208,6 +208,12 @@ static int mba_run_test(const struct resctrl_test *test, const struct user_param return ret; } +/* + * The MBA test runs wherever resctrl exposes an MB resource, a memory-bandwidth + * monitor (x86 local bytes under L3_MON or MPAM total bytes under MB_MON), and + * an independent reference-bandwidth PMU exists to + * validate against. It is not gated on CPU vendor. + */ static bool mba_feature_check(const struct resctrl_test *test) { return test_resource_feature_check(test) && @@ -219,7 +225,6 @@ static bool mba_feature_check(const struct resctrl_test *test) struct resctrl_test mba_test = { .name = "MBA", .resource = "MB", - .vendor_specific = ARCH_INTEL, .feature_check = mba_feature_check, .run_test = mba_run_test, .cleanup = mba_test_cleanup, -- 2.43.0
