RFR: 8370389: JavaFrameAnchor on s390 has unnecessary barriers

[Andrew Haley]

On Wed, 22 Oct 2025 07:21:45 GMT, Amit Kumar <amitkumar at openjdk.org> wrote:

> No hardware barriers are necessary. All members are volatile and the profiler is run from a signal handler.

Marked as reviewed by aph (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/27930#pullrequestreview-3368847875