RFR: 8369444: JavaFrameAnchor on PPC64 has unnecessary barriers [v2]

[Martin Doerr]

On Wed, 15 Oct 2025 07:43:21 GMT, David Briemann <dbriemann at openjdk.org> wrote:

>> No hardware barriers are necessary. All members are volatile and the profiler is run from a signal handler and only observers the thread its running on.
>
> David Briemann has updated the pull request incrementally with one additional commit since the last revision:
> 
>   remove whitespace

Marked as reviewed by mdoerr (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27768#pullrequestreview-3339138044