kselftest/arm64: Verify all different mmap MTE options

Browse source

This testcase checks the different unsupported/supported options for mmap
if used with PROT_MTE memory protection flag. These checks are,

* Either pstate.tco enable or prctl PR_MTE_TCF_NONE option should not cause
  any tag mismatch faults.
* Different combinations of anonymous/file memory mmap, mprotect,
  sync/async error mode and private/shared mappings should work.
* mprotect should not be able to clear the PROT_MTE page property.

Co-developed-by: Gabor Kertesz <gabor.kertesz@arm.com>
Signed-off-by: Gabor Kertesz <gabor.kertesz@arm.com>
Signed-off-by: Amit Daniel Kachhap <amit.kachhap@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201002115630.24683-5-amit.kachhap@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

...

This commit is contained in:

Amit Daniel Kachhap 2020-10-02 17:26:28 +05:30 • committed by Will Deacon

parent dfe537cf47

commit 53ec81d232

2 changed files with 263 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

tools/testing/selftests/arm64/mte/.gitignore vendored

View file

262

tools/testing/selftests/arm64/mte/check_mmap_options.c

View file