RFR: 8315856: RISC-V: Use Zacas extension for cmpxchg [v6]

[Robbin Ehn]

On Fri, 15 Dec 2023 14:51:06 GMT, Ludovic Henry <luhenry at openjdk.org> wrote:

>> 8315856: RISC-V: Use Zacas extension for cmpxchg
>
> Ludovic Henry has updated the pull request incrementally with one additional commit since the last revision:
> 
>   review

Thanks

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Marked as reviewed by rehn (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/16910#pullrequestreview-1788270314