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  1. JDK
  2. JDK-8151775

aarch64: add support for 8.1 LSE atomic operations

    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:
      b115
    • CPU:
      aarch64
    • OS:
      linux

      Description

      This issue proposes the addition of support for 8.1 LSE atomic operations.

      There are 2 atomic operations which may be useful

      ldadd which atomically adds a value to memory
      swp which atomically swaps a value into memory

      These new instructions offer performance advantages over the existing implementations using exclusive regions.

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

              • Created:
                Updated:
                Resolved: