aarch64: add support for 8.1 LSE CAS instructions

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 9
    • Affects Version/s: 9
    • Component/s: hotspot
    • None
    • b112
    • aarch64
    • linux

        armv8.1 LSE supports compare and swap instructions.

        Using CAS has significant performance benefits over using exclusive regions on large multi core systems.

              Assignee:
              Ed Nevill
              Reporter:
              Ed Nevill
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