Various improvements/fixes for the mm kselftests:
- Patch 1-3 extend support for more build configurations: out-of-tree $KDIR, cross-compilation, etc.
- Patch 4-6 fix issues related to faulting in pages, introducing a new helper for that purpose.
- Patch 7 fixes the value returned by pagemap_ioctl (PASS was always returned, which explains why the issue fixed in patch 6 went unnoticed).
- Patch 8 improves the exit code of pfnmap.
Net results: - 1 test no longer fails (patch 6) - 3 tests are no longer skipped (patch 4) - More accurate return values for whole suites (patch 7, 8) - Extra tests are more likely to be built (patch 1-3)
--- v1..v2: - New patches: 1, 4, 5, 8
v1: https://lore.kernel.org/all/20251216142633.2401447-1-kevin.brodsky@arm.com/ --- Cc: Andrew Morton akpm@linux-foundation.org Cc: David Hildenbrand david@kernel.org Cc: Lorenzo Stoakes lorenzo.stoakes@oracle.com Cc: Mark Brown broonie@kernel.org Cc: Ryan Roberts ryan.roberts@arm.com Cc: Shuah Khan shuah@kernel.org --- Kevin Brodsky (8): selftests/mm: default KDIR to build directory selftests/mm: remove flaky header check selftests/mm: pass down full CC and CFLAGS to check_config.sh selftests/mm: fix usage of FORCE_READ() in cow tests selftests/mm: introduce helper to read every page in range selftests/mm: fix faulting-in code in pagemap_ioctl test selftests/mm: fix exit code in pagemap_ioctl selftests/mm: report SKIP in pfnmap if a check fails
tools/testing/selftests/mm/Makefile | 8 +- tools/testing/selftests/mm/check_config.sh | 3 +- tools/testing/selftests/mm/cow.c | 16 ++-- tools/testing/selftests/mm/hugetlb-madvise.c | 9 +- tools/testing/selftests/mm/page_frag/Makefile | 2 +- tools/testing/selftests/mm/pagemap_ioctl.c | 10 +- tools/testing/selftests/mm/pfnmap.c | 95 ++++++++++++------- .../selftests/mm/split_huge_page_test.c | 6 +- tools/testing/selftests/mm/vm_util.h | 6 ++ 9 files changed, 84 insertions(+), 71 deletions(-)
base-commit: 9ace4753a5202b02191d54e9fdf7f9e3d02b85eb