Hi all, This series fixes a few issues in hmm-tests that show up when page-size and huge-page configuration differ from the hardcoded assumptions the tests were written for (PMD/THP sizing, default hugepage size, and related cases).
It also includes a fix to exclusive_cow: the test ignored the return value of fork(), so both parent and child ran the same teardown path. Changes in v3: - Rebased onto current mm-new. - Patch 1: reworked the compound testcase check in response to the Shashiko review. Instead of an ASSERT_TRUE() that ORs the PMD and PUD cases on every page (which loses the expected/observed values on failure and would let a fragmented PMD+PUD mapping pass), determine the mapping level once from the first page and then enforce that every page matches it exactly with ASSERT_EQ(). - Patch 2: Unchanged from v2. - Patch 3: No functional change from v2. v1: https://lore.kernel.org/all/[email protected]/ v2: https://lore.kernel.org/all/[email protected]/ Please let us know if you have any comments. Thanks, Aboorva Aboorva Devarajan (1): selftests/mm: fix exclusive_cow test fork() handling Sayali Patil (2): selftests/mm: allow PUD-level entries in compound testcase of hmm tests selftests/mm: remove hardcoded THP sizing assumptions in hmm tests tools/testing/selftests/mm/hmm-tests.c | 125 +++++++++++++++++++------ 1 file changed, 95 insertions(+), 30 deletions(-) base-commit: 801c5efa788952095586d076fed1ea4902facff8 -- 2.54.0
