aarch64: add support for 8.1 LSE atomic operations

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    • Type: Enhancement
    • Resolution: Fixed
    • Priority: P4
    • 9
    • Affects Version/s: 9
    • Component/s: hotspot
    • None
    • b115
    • aarch64
    • linux

        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.

              Assignee:
              Ed Nevill
              Reporter:
              Ed Nevill
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                Created:
                Updated:
                Resolved: