diff mbox series

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

Message ID 20210412232753.1012412-2-peterx@redhat.com (mailing list archive)
State New, archived
Headers show
Series userfaultfd/selftests: A few cleanups | expand

Commit Message

Peter Xu April 12, 2021, 11:27 p.m. UTC 
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 <axelrasmussen@google.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
 tools/testing/selftests/vm/userfaultfd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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");