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  1. JDK
  2. JDK-8150394

aarch64: add support for 8.1 LSE CAS instructions

    Details

    • Type: Enhancement
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 9
    • Fix Version/s: 9
    • Component/s: hotspot
    • Labels:
      None
    • Subcomponent:
    • Resolved In Build:
      b112
    • CPU:
      aarch64
    • OS:
      linux

      Description

      armv8.1 LSE supports compare and swap instructions.

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

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            • Assignee:
              enevill Ed Nevill
              Reporter:
              enevill Ed Nevill
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              Dates

              • Created:
                Updated:
                Resolved: