From: Abdalla Eldoumani <[email protected]> Two small changes to the vector length configuration test.
The first makes vec-syscfg report failures through its exit status. It currently always exits 0, so a kernel that fails its checks still shows as passing in the kselftest runner. The second implements the "Test PR_SVE_VL_INHERIT after a double fork" item from the fp TODO list by also checking the VL in a grandchild, two fork() and exec() generations down. Tested under QEMU (-cpu max, -cpu max,sme=off and -cpu cortex-a57) on mainline (58161ead2, after v7.3-rc7). To check that the new test can fail, it was also run on a kernel modified to clear the inherit flag on exec(): the existing check passed, the new check failed for SVE and SME, and vec-syscfg exited 1. Assisted-by: LLM Abdalla Eldoumani (2): kselftest/arm64: Report test failures in vec-syscfg's exit status kselftest/arm64: Check that PR_SVE_VL_INHERIT survives a second exec tools/testing/selftests/arm64/fp/TODO | 1 - tools/testing/selftests/arm64/fp/vec-syscfg.c | 64 +++++++++++++++++-- 2 files changed, 60 insertions(+), 5 deletions(-) base-commit: 58161ead29e50d70a317ea26b472e0c7508e69da -- 2.49.0.windows.1
