On 28/02/25 10:24 pm, Brendan Jackman wrote:
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
Signed-off-by: Brendan Jackman <jackmanb@xxxxxxxxxx>
---
tools/testing/selftests/mm/uffd-wp-mremap.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/mm/uffd-wp-mremap.c b/tools/testing/selftests/mm/uffd-wp-mremap.c
index 2c4f984bd73caa17e12b9f4a5bb71e7fdf5d8554..c2ba7d46c7b4581a3c32a6b6acd148e3e89c2172 100644
--- a/tools/testing/selftests/mm/uffd-wp-mremap.c
+++ b/tools/testing/selftests/mm/uffd-wp-mremap.c
@@ -182,7 +182,10 @@ static void test_one_folio(size_t size, bool private, bool swapout, bool hugetlb
/* 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)) {
I think you are correct, just want to confirm whether "uffd not
available" if and only if "errno == ENOENT" is true. That is,
is it possible that errno can be something else and uffd is still not
available, or errno can be ENOENT even if uffd is available.
