selftests/riscv: Add Zicbop prefetch test

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Add selftests to cbo.c to verify Zicbop extension behavior, and split
the previous `--sigill` mode into two options so they can be tested
independently.

The test checks:
- That hwprobe correctly reports Zicbop presence and block size.
- That prefetch instructions execute without exception on valid and NULL
  addresses when Zicbop is present.

Signed-off-by: Yao Zihong <zihong.plct@isrc.iscas.ac.cn>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Link: https://patch.msgid.link/20251118162436.15485-3-zihong.plct@isrc.iscas.ac.cn
Signed-off-by: Paul Walmsley <pjw@kernel.org>

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Yao Zihong 2025-11-19 00:23:25 +08:00 • committed by Paul Walmsley

parent e0a504984a

commit a131fd6079

1 changed files with 136 additions and 29 deletions

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tools/testing/selftests/riscv/hwprobe/cbo.c

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