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linux/tools/testing/selftests/arm64
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Mark Brown 67f4986910 kselftest/arm64: Skip non-power of 2 SVE vector lengths in fp-stress 
As documented in issue C215 in the known issues list for DDI0487I.a [1] Arm
will be making a retroactive change to SVE to remove the possibility of
selecting non power of two vector lengths. This has no impact on existing
physical implementations but most virtual implementations have implemented
the full range of permissible vector lengths. Given how demanding fp-stress
is for these implementations update to only attempt to enumerate the power
of two vector lengths, reducing the load created on existing virtual
implementations and only exercising the functionality that will be seen in
physical implementations.

[1] https://developer.arm.com/documentation/102105/ia-00/

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20221220-arm64-fp-stress-pow2-v1-1-d0ce756b57af@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2023-01-12 16:20:59 +00:00
..
abi kselftest/arm64: Only enumerate power of two VLs in syscall-abi 2023-01-12 16:20:32 +00:00
bti kselftest/arm64: Explicitly build no BTI tests with BTI disabled 2022-05-16 19:43:40 +01:00
fp kselftest/arm64: Skip non-power of 2 SVE vector lengths in fp-stress 2023-01-12 16:20:59 +00:00
mte kselftest/arm64: fix array_size.cocci warning 2022-11-14 14:43:49 +00:00
pauth kselftest/arm64: pac: Fix skipping of tests on systems without PAC 2021-08-20 12:06:59 +01:00
signal kselftest/arm64: Print ASCII version of unknown signal frame magic values 2022-11-08 16:04:51 +00:00
tags .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile kselftest/arm64: Fix ABI header directory location 2022-05-04 10:02:36 +01:00
README kselftest: arm64: extend toplevel skeleton Makefile 2019-11-08 11:10:30 +00:00

README 

KSelfTest ARM64
===============

- These tests are arm64 specific and so not built or run but just skipped
  completely when env-variable ARCH is found to be different than 'arm64'
  and `uname -m` reports other than 'aarch64'.

- Holding true the above, ARM64 KSFT tests can be run within the KSelfTest
  framework using standard Linux top-level-makefile targets:

      $ make TARGETS=arm64 kselftest-clean
      $ make TARGETS=arm64 kselftest

      or

      $ make -C tools/testing/selftests TARGETS=arm64 \
		INSTALL_PATH=<your-installation-path> install

      or, alternatively, only specific arm64/ subtargets can be picked:

      $ make -C tools/testing/selftests TARGETS=arm64 ARM64_SUBTARGETS="tags signal" \
		INSTALL_PATH=<your-installation-path> install

   Further details on building and running KFST can be found in:
     Documentation/dev-tools/kselftest.rst