[PATCH v3 0/6] add more test coverage to MTE kselftests

[Joey Gouly <joey.gouly@arm.com>]

This is a series which refactors and then adds some extra tests for MTE
in the kselftest framework.

The issue that these tests are for was was fixed by Robin in
295cf156231c ("arm64: Avoid premature usercopy failure") and based on a
simplified example by Catalin [1].

They test some combinations of pointer offsets, sizes and syscalls to
exercise different paths in the kernel.

Changes since v2 [3]:
  - simplified error handling further
  - added more detailed commit messages
  - add reviewed-by and tested-by

Changes since v1 [2]:
  - add a page_sz to the tests, for non-4K kernels
  - use loops to generate more tests and avoid long lines

Thanks,
Joey

[1] https://lore.kernel.org/all/20210624150911.GA25097@arm.com/
[2] https://lore.kernel.org/linux-arm-kernel/20220125150920.23955-1-joey.gouly@arm.com/
[3] https://lore.kernel.org/linux-arm-kernel/45ab2d96-c8e0-7b72-a384-c4160b9312ac@linuxfoundation.org/T/

Joey Gouly (6):
  kselftest/arm64: mte: user_mem: introduce tag_offset and tag_len
  kselftest/arm64: mte: user_mem: rework error handling
  kselftest/arm64: mte: user_mem: check different offsets and sizes
  kselftest/arm64: mte: user_mem: add test type enum
  kselftest/arm64: mte: user_mem: add more test types
  kselftest/arm64: mte: user_mem: test a wider range of values

 .../selftests/arm64/mte/check_user_mem.c      | 193 +++++++++++++++---
 1 file changed, 160 insertions(+), 33 deletions(-)

-- 
2.17.1


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