Re: [RESEND PATCH 1/4] selftests/mm/guard-regions: skip collapse test when thp not enabled

[Zi Yan]

On 12 Mar 2026, at 7:40, Chunyu Hu wrote:

> When thp is not available, just skip the collape tests to avoid the false
> positive.
>
> Without the change, run with a thp disabled kernel:
>   ./run_vmtests.sh -t madv_guard
>   <snip/>
>   # #  RUN           guard_regions.file.multi_vma ...
>   # #            OK  guard_regions.file.multi_vma
>   # ok 89 guard_regions.file.multi_vma
>   # #  RUN           guard_regions.file.basic ...
>   # #            OK  guard_regions.file.basic
>   # ok 90 guard_regions.file.basic
>   # # FAILED: 87 / 90 tests passed.
>   # # 17 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
>   # # Totals: pass:70 fail:3 xfail:0 xpass:0 skip:17 error:0
>   # [FAIL]
>   not ok 1 guard-regions # exit=1
>   hwpoison_inject
>   # SUMMARY: PASS=0 SKIP=0 FAIL=1
>
> With this change, run with thp disabled kernel:
>   ./run_vmtests.sh -t madv_guard
>   <snip/>
>   # ok 90 guard_regions.file.basic
>   # # PASSED: 90 / 90 tests passed.
>   # # 20 skipped test(s) detected. Consider enabling relevant config options to improve coverage.
>   # # Totals: pass:70 fail:0 xfail:0 xpass:0 skip:20 error:0
>   # [PASS]
>   ok 1 guard-regions
>   hwpoison_inject
>   # SUMMARY: PASS=1 SKIP=0 FAIL=0
>   1..1
> CC: Li Wang <liwang@xxxxxxxxxx>
> Signed-off-by: Chunyu Hu <chuhu@xxxxxxxxxx>
> ---
>  tools/testing/selftests/mm/guard-regions.c | 4 ++++
>  1 file changed, 4 insertions(+)
>
LGTM.

Reviewed-by: Zi Yan <ziy@xxxxxxxxxx>

Best Regards,
Yan, Zi