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SubjectRe: [PATCH v2 1/6] selftests: vm: add hugetlb_shared userfaultfd test to run_vmtests.sh
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On 4/22/22 3:29 PM, Axel Rasmussen wrote:
> This not being included was just a simple oversight. There are certain
> features (like minor fault support) which are only enabled on shared
> mappings, so without including hugetlb_shared we actually lose a
> significant amount of test coverage.
>
> Signed-off-by: Axel Rasmussen <axelrasmussen@google.com>
> ---
> tools/testing/selftests/vm/run_vmtests.sh | 6 ++++--
> 1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/tools/testing/selftests/vm/run_vmtests.sh b/tools/testing/selftests/vm/run_vmtests.sh
> index a2302b5faaf2..5065dbd89bdb 100755
> --- a/tools/testing/selftests/vm/run_vmtests.sh
> +++ b/tools/testing/selftests/vm/run_vmtests.sh
> @@ -121,9 +121,11 @@ run_test ./gup_test -a
> run_test ./gup_test -ct -F 0x1 0 19 0x1000
>
> run_test ./userfaultfd anon 20 16
> -# Test requires source and destination huge pages. Size of source
> -# (half_ufd_size_MB) is passed as argument to test.
> +# Hugetlb tests require source and destination huge pages. Pass in half the
> +# size ($half_ufd_size_MB), which is used for *each*.
> run_test ./userfaultfd hugetlb "$half_ufd_size_MB" 32
> +run_test ./userfaultfd hugetlb_shared "$half_ufd_size_MB" 32 "$mnt"/uffd-test
> +rm -f "$mnt"/uffd-test
> run_test ./userfaultfd shmem 20 16
>
> #cleanup
>

Looks good to me.

Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>

thanks,
-- Shuah

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