[PATCH v2 1/5] userfaultfd/selftests: Use user mode only

[Peter Xu]

Userfaultfd selftest does not need to handle kernel initiated fault.  Set user
mode so it can be run even if unprivileged_userfaultfd=0 (which is the default).

Reviewed-by: Axel Rasmussen <axelrasmus...@google.com>
Signed-off-by: Peter Xu <pet...@redhat.com>
---
 tools/testing/selftests/vm/userfaultfd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/vm/userfaultfd.c 
b/tools/testing/selftests/vm/userfaultfd.c
index f5ab5e0312e7..ce23db8eec26 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -831,7 +831,7 @@ static int userfaultfd_open_ext(uint64_t *features)
 {
        struct uffdio_api uffdio_api;
 
-       uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK);
+       uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK | 
UFFD_USER_MODE_ONLY);
        if (uffd < 0) {
                fprintf(stderr,
                        "userfaultfd syscall not available in this kernel\n");
-- 
2.26.2