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kselftest/arm64: Handle attempts to disable SM on SME only systems

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The ABI for disabling streaming mode via ptrace is to do a write via the
SVE register set. Following the recent round of fixes to the ptrace code
we don't support this operation on systems without SVE, which is detected
as failures by fp-ptrace. Update the program so that it knows that this
operation is not currently supported.

Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20250718-arm64-fp-ptrace-sme-only-v1-3-3b96dd19a503@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Mark Brown 2025-07-18 23:14:52 +01:00 committed by Catalin Marinas
parent aa7d3c8bc2
commit 4752dcc156
1 changed files with 3 additions and 0 deletions
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3
tools/testing/selftests/arm64/fp/fp-ptrace.c
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@ -1061,6 +1061,9 @@ static bool sve_write_supported(struct test_config *config)
if (config->sme_vl_in != config->sme_vl_expected) {
return false;
}
if (!sve_supported())
return false;
}
return true;