The patch titled
Subject: selftests/mm: skip uffd-wp-mremap if userfaultfd not available
has been added to the -mm mm-unstable branch. Its filename is
selftests-mm-skip-uffd-wp-mremap-if-userfaultfd-not-available.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/selftests-mm-skip-uffd-wp-mremap-if-userfaultfd-not-available.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Brendan Jackman <jackmanb@xxxxxxxxxx>
Subject: selftests/mm: skip uffd-wp-mremap if userfaultfd not available
Date: Fri, 21 Feb 2025 18:25:43 +0000
It's obvious that this should fail in that case, but still, save the
reader the effort of figuring out that they've run into this by just
SKIPping
Link: https://lkml.kernel.org/r/20250221-mm-selftests-v2-4-28c4d66383c5@xxxxxxxxxx
Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx>
Cc: Dev Jain <dev.jain@xxxxxxx>
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Mateusz Guzik <mjguzik@xxxxxxxxx>
Cc: Shuah Khan (Samsung OSG) <shuah@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-wp-mremap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
--- a/tools/testing/selftests/mm/uffd-wp-mremap.c~selftests-mm-skip-uffd-wp-mremap-if-userfaultfd-not-available
+++ a/tools/testing/selftests/mm/uffd-wp-mremap.c
@@ -182,7 +182,10 @@ static void test_one_folio(size_t size,
/* Register range for uffd-wp. */
if (userfaultfd_open(&features)) {
- ksft_test_result_fail("userfaultfd_open() failed\n");
+ if (errno == ENOENT)
+ ksft_test_result_skip("userfaultfd not available\n");
+ else
+ ksft_test_result_fail("userfaultfd_open() failed\n");
goto out;
}
if (uffd_register(uffd, mem, size, false, true, false)) {
_
Patches currently in -mm which might be from jackmanb@xxxxxxxxxx are
mm-mmu_gather-update-comment-on-rcu-freeing.patch
selftests-mm-report-errno-when-things-fail-in-gup_longterm.patch
selftests-mm-fix-assumption-that-sudo-is-present.patch
selftests-mm-skip-uffd-stress-if-userfaultfd-not-available.patch
selftests-mm-skip-uffd-wp-mremap-if-userfaultfd-not-available.patch
selftests-mm-uffd-rename-nr_cpus-nr_threads.patch
selftests-mm-print-some-details-when-uffd-stress-gets-bad-params.patch
selftests-mm-dont-fail-uffd-stress-if-too-many-cpus.patch
selftests-mm-skip-map_populate-on-weird-filesystems.patch
selftests-mm-skip-gup_longerm-tests-on-weird-filesystems.patch
