RFR: 8284196: RISC-V: Detect supported ISA extensions over cpuinfo [v2]

[Feilong Jiang]

On Thu, 9 Feb 2023 05:30:23 GMT, Fei Yang <fyang at openjdk.org> wrote:

> I guess we might need to stay with the current approach and put off this PR for some while to see

Agree.  Looks like it's still too early to do that. I'll convert this PR to draft then.

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PR: https://git.openjdk.org/jdk/pull/12343