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  1. JDK
  2. JDK-8151775

aarch64: add support for 8.1 LSE atomic operations

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Details

    • Enhancement
    • Status: Resolved
    • P4
    • Resolution: Fixed
    • 9
    • 9
    • hotspot
    • None
    • b115
    • aarch64
    • linux

    Backports

      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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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8260765 aarch64: add support for 8.1 LSE atomic operations

            • P4 - Minor loss of function, or other problem where easy workaround is present.
            • Resolved
            relates to

            Enhancement - null JDK-8257192 Integrate AArch64 JIT port into 8u

            • P3 - Major loss of function.
            • Resolved

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                enevill Ed Nevill
                enevill Ed Nevill
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                Dates

                  Created:
                  Updated:
                  Resolved: