kselftest/arm64: add test item that support to capturing the SIGBUS signal

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Some enhanced features, such as the LSE2 feature, do not result in
SILLILL if LSE2 is missing and LSE is present, but will generate a
SIGBUS exception when atomic access unaligned.

Therefore, we add test item to test this type of features.

Notice that testing for SIGBUS only makes sense after make sure that
the instruction does not cause a SIGILL signal.

Signed-off-by: Zeng Heng <zengheng4@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230808134036.668954-5-zengheng4@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

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Zeng Heng 2023-08-08 21:40:35 +08:00 • committed by Will Deacon

parent 71b634aba3

commit fd49cf0888

1 changed files with 23 additions and 10 deletions

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tools/testing/selftests/arm64/abi/hwcap.c

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