linux-kernel - [PATCH v4 0/7] selftests/mm: Fix false positives and skip unsupported tests

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Message-ID: <20250816040113.760010-1-aboorvad@linux.ibm.com>
Date: Sat, 16 Aug 2025 09:31:06 +0530
From: Aboorva Devarajan <aboorvad@...ux.ibm.com>
To: akpm@...ux-foundation.org, Liam.Howlett@...cle.com,
        lorenzo.stoakes@...cle.com, shuah@...nel.org, pfalcato@...e.de,
        david@...hat.com, ziy@...dia.com, baolin.wang@...ux.alibaba.com,
        npache@...hat.com, ryan.roberts@....com, dev.jain@....com,
        baohua@...nel.org, richard.weiyang@...il.com
Cc: linux-mm@...ck.org, linux-kselftest@...r.kernel.org,
        linux-kernel@...r.kernel.org, donettom@...ux.ibm.com,
        ritesh.list@...il.com, aboorvad@...ux.ibm.com
Subject: [PATCH v4 0/7] selftests/mm: Fix false positives and skip unsupported tests

Hi all,

This patch series addresses false positives in the generic mm selftests
and skips tests that cannot run correctly due to missing features or system
limitations.


v3: https://lore.kernel.org/all/20250729053403.1071807-1-aboorvad@linux.ibm.com/

Changes in v4:

  - Rebased onto the latest mm-new branch, top commit of the base is commit 916e1f041670 ("drivers/base: move memory_block_add_nid() into the caller"). Dropped the v3 patches that had already been merged and re-applied them to the mm-new branch.
  - Only Patch 4 is updated to address review comments, all other patches remain unchanged from v3.

--- 

v2: https://lore.kernel.org/all/20250703060656.54345-1-aboorvad@linux.ibm.com/

Changes in v3:

  - Rebased onto the latest mm-new branch, top commit of the base is commit 0709ddf8951f ("mm: add zblock allocator").
  - Minor refactor based on the review comments.
  - Included the tags from the previous version.

---

v1: https://lore.kernel.org/all/20250616160632.35250-1-aboorvad@linux.ibm.com/

Changes in v2:

   - Rebased onto the mm-new branch, top commit of the base is commit 3b4a8ad89f7e ("mm: add zblock allocator").
   - Split some patches for clarity.
   - Updated virtual_address_range test to support testing 4PB VA on PPC64.
   - Added proper Fixes: tags.
   - Included a patch to skip a failing userfaultfd test when unsupported,
     instead of reporting a failure.

---

Please let us know if you have any further comments.

Thanks,
Aboorva

Aboorva Devarajan (3):
  selftests/mm: fix child process exit codes in ksm_functional_tests
  selftests/mm: skip thuge-gen test if system is not setup properly
  selftests/mm: skip hugepage-mremap test if userfaultfd unavailable

Donet Tom (4):
  mm/selftests: Fix incorrect pointer being passed to mark_range()
  selftests/mm: Add support to test 4PB VA on PPC64
  selftest/mm: Fix ksm_funtional_test failures
  mm/selftests: Fix split_huge_page_test failure on systems with 64KB
    page size

 tools/testing/selftests/mm/cow.c              |  5 ----
 tools/testing/selftests/mm/hugepage-mremap.c  | 16 +++++++++--
 .../selftests/mm/ksm_functional_tests.c       | 28 +++++++++++++------
 .../selftests/mm/split_huge_page_test.c       | 22 +++++++++------
 tools/testing/selftests/mm/thuge-gen.c        | 11 +++++---
 tools/testing/selftests/mm/uffd-wp-mremap.c   |  5 ----
 .../selftests/mm/virtual_address_range.c      | 13 ++++++++-
 tools/testing/selftests/mm/vm_util.h          |  5 ++++
 8 files changed, 71 insertions(+), 34 deletions(-)

-- 
2.47.1