[PATCH v3 0/4] userfaultfd: selftest: Improve behavior with older kernels

Thiago Jung Bauermann
2018-08-28T17:26:30Z

Hello,

This version of the series is unchanged from v2 except for the last patch
which is completely new, and is provided by Mike Rapoport.

Original series description:

> A tester ran the upstream selftest on a distro kernel and sounded the
> alarm when it reported failures for features which aren't included in
> that kernel.
>
> This patch set improves the test behavior in that scenario.

Changes since v2:

- Added Mike Rapoport's Reviewed-by's and Acked-by's to patches 1-3.
- Replaced patch 4/4 by the one provided by Mike Rapoport.

Changes since v1:

- Patch "userfaultfd: selftest: Skip test if userfaultfd() syscall
not supported"
- New patch, suggested by Mike Rapoport.

- Patch "userfaultfd: selftest: Skip test if a feature isn't supported"
- Try running other tests even if one (or more) of them returns KSFT_SKIP.

- Patch "userfaultfd: selftest: Cope if shmem doesn't support zeropage"
- Ignore lack of UFFDIO_ZEROPAGE in userfaultfd_events_test() and
userfaultfd_stress().
- Make userfaultfd_zeropage_test() return KSFT_SKIP if UFFDIO_ZEROPAGE
isn't supported.

Mike Rapoport (1):
userfaultfd: selftest: make supported range ioctl verification more
robust

Thiago Jung Bauermann (3):
userfaultfd: selftest: Fix checking of userfaultfd_open() result
userfaultfd: selftest: Skip test if userfaultfd() syscall not
supported
userfaultfd: selftest: Skip test if a feature isn't supported

tools/testing/selftests/vm/userfaultfd.c | 113 +++++++++++++++++++------------
1 file changed, 69 insertions(+), 44 deletions(-)