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Subject[PATCH v3 0/4] userfaultfd: selftest: Improve behavior with older kernels
Date
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(-)

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