RFR: 8369444: JavaFrameAnchor on PPC64 has unnecessary barriers

[Dean Long]

On Mon, 13 Oct 2025 11:48:42 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.

Marked as reviewed by dlong (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27768#pullrequestreview-3337614439