diff options
Diffstat (limited to 'tools/testing/selftests/mm/hugepage-mremap.c')
| -rw-r--r-- | tools/testing/selftests/mm/hugepage-mremap.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/tools/testing/selftests/mm/hugepage-mremap.c b/tools/testing/selftests/mm/hugepage-mremap.c index c463d1c09c9b..b8f7d92e5a35 100644 --- a/tools/testing/selftests/mm/hugepage-mremap.c +++ b/tools/testing/selftests/mm/hugepage-mremap.c @@ -24,7 +24,7 @@ #include <sys/ioctl.h> #include <string.h> #include <stdbool.h> -#include "../kselftest.h" +#include "kselftest.h" #include "vm_util.h" #define DEFAULT_LENGTH_MB 10UL @@ -65,10 +65,20 @@ static void register_region_with_uffd(char *addr, size_t len) struct uffdio_api uffdio_api; /* Create and enable userfaultfd object. */ - uffd = syscall(__NR_userfaultfd, O_CLOEXEC | O_NONBLOCK); - if (uffd == -1) - ksft_exit_fail_msg("userfaultfd: %s\n", strerror(errno)); + if (uffd == -1) { + switch (errno) { + case EPERM: + ksft_exit_skip("Insufficient permissions, try running as root.\n"); + break; + case ENOSYS: + ksft_exit_skip("userfaultfd is not supported/not enabled.\n"); + break; + default: + ksft_exit_fail_msg("userfaultfd failed with %s\n", strerror(errno)); + break; + } + } uffdio_api.api = UFFD_API; uffdio_api.features = 0; |