RFR: 8334135: RISC-V: check vector support in VM_Version::os_aux_features

[Fei Yang]

On Thu, 13 Jun 2024 09:07:00 GMT, Hamlin Li <mli at openjdk.org> wrote:

> Ah, I see what's the `only Linux Kernel v6.5+ supports V` mean now. Thanks for pointing out. OK, then seems the board I just got is not good enough to test the RVV related features. Or, maybe I need more work to make it work, as my kernel now is `5.10.4`

Yeah. But I guess it's no big issue if the purpose is to do some simple JMH performance evaluation locally with this change.

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PR Comment: https://git.openjdk.org/jdk/pull/19679#issuecomment-2165170455