On 6/26/24 10:55, Reinette Chatre wrote:
Hi Shuah,
Could you please consider this fix for inclusion into kselftests?
Thank you very much.
Reinette
On 6/11/24 3:18 PM, Babu Moger wrote:
The non-contiguous CBM test fails on AMD with: Starting L3_NONCONT_CAT test ... Mounting resctrl to "/sys/fs/resctrl" CPUID output doesn't match 'sparse_masks' file content! not ok 5 L3_NONCONT_CAT: test
AMD always supports non-contiguous CBM but does not report it via CPUID.
Fix the non-contiguous CBM test to use CPUID to discover non-contiguous CBM support only on Intel.
Fixes: ae638551ab64 ("selftests/resctrl: Add non-contiguous CBMs CAT test") Signed-off-by: Babu Moger babu.moger@amd.com Reviewed-by: Reinette Chatre reinette.chatre@intel.com
v3: Reworked changelong.
v2: Moved the non-contiguous CBM verification to a new function arch_supports_noncont_cat.
v1: This was part of the series https://lore.kernel.org/lkml/cover.1708637563.git.babu.moger@amd.com/ Sending this as a separate fix per review comments.
tools/testing/selftests/resctrl/cat_test.c | 32 +++++++++++++++------- 1 file changed, 22 insertions(+), 10 deletions(-)
Applied to linux-kselftest fixes branch for 6.10-rc6
thanks, -- Shuah