kernel/tools/testing/selftests/arm64/fp/vec-syscfg.c, branch linux-6.2.y

kselftest/arm64: Extend vector configuration API tests to cover SME

2022-04-28T16:57:11Z

Provide RDVL helpers for SME and extend the main vector configuration tests to cover SME. Signed-off-by: Mark Brown Reviewed-by: Shuah Khan Acked-by: Catalin Marinas Link: https://lore.kernel.org/r/20220419112247.711548-32-broonie@kernel.org Signed-off-by: Catalin Marinas

selftests/arm64: remove ARRAY_SIZE define from vec-syscfg.c

2021-12-11T00:50:25Z

ARRAY_SIZE is defined in several selftests. Remove definitions from individual test files and include header file for the define instead. ARRAY_SIZE define is added in a separate patch to prepare for this change. Remove ARRAY_SIZE from vec-syscfg.c and pickup the one defined in kselftest.h. Signed-off-by: Shuah Khan

selftests: arm64: Verify that all possible vector lengths are handled

2021-09-29T15:33:04Z

As part of the enumeration interface for setting vector lengths it is valid to set vector lengths not supported in the system, these will be rounded to a supported vector length and returned from the prctl(). Add a test which exercises this for every valid vector length and makes sure that the return value is as expected and that this is reflected in the actual system state. Signed-off-by: Mark Brown Reviewed-by: Tomohiro Misono Link: https://lore.kernel.org/r/20210929151925.9601-5-broonie@kernel.org Signed-off-by: Will Deacon

selftests: arm64: Fix and enable test for setting current VL in vec-syscfg

2021-09-29T15:33:04Z

We had some test code for verifying that we can write the current VL via the prctl() interface but the condition for the test was inverted which wasn't noticed as it was never actually hooked up to the array of tests we execute. Fix this. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20210929151925.9601-4-broonie@kernel.org Signed-off-by: Will Deacon

selftests: arm64: Remove bogus error check on writing to files

2021-09-29T15:33:04Z

Due to some refactoring with the error handling we ended up mangling things so we never actually set ret and therefore shouldn't be checking it. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20210929151925.9601-3-broonie@kernel.org Signed-off-by: Will Deacon

selftests: arm64: Fix printf() format mismatch in vec-syscfg

2021-09-29T15:33:04Z

The format for this error message calls for the plain text version of the error but we weren't supply it. Signed-off-by: Mark Brown Link: https://lore.kernel.org/r/20210929151925.9601-2-broonie@kernel.org Signed-off-by: Will Deacon

kselftest/arm64: Add tests for SVE vector configuration

2021-08-03T15:20:05Z

We provide interfaces for configuring the SVE vector length seen by processes using prctl and also via /proc for configuring the default values. Provide tests that exercise all these interfaces and verify that they take effect as expected, though at present no test fully enumerates all the possible vector lengths. A subset of this is already tested via sve-probe-vls but the /proc interfaces are not currently covered at all. In preparation for the forthcoming support for SME, the Scalable Matrix Extension, which has separately but similarly configured vector lengths which we expect to offer similar userspace interfaces for, all the actual files and prctls used are parameterised and we don't validate that the architectural minimum vector length is the minimum we see. Signed-off-by: Mark Brown Reviewed-by: Dave Martin Link: https://lore.kernel.org/r/20210803140450.46624-4-broonie@kernel.org Signed-off-by: Catalin Marinas