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  1. JDK
  2. JDK-8324824

AArch64: Detect Ampere-1B core and update default options for Ampere CPUs

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    • b10
    • aarch64
    • generic

    Backports

      Description

        Add CPU detection code for Ampere-B CPUs, and update default AArch64 options for Ampere CPUs

        GCC has already had the changes to support Ampere-1B, https://gcc.gnu.org/pipermail/gcc-patches/2023-November/637622.html.

        Plan to backport to 17 and 21 LTS once the MR gets approved to mainline.

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            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-8327115 AArch64: Detect Ampere-1B core and update default options for Ampere CPUs

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

            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-8327241 AArch64: Detect Ampere-1B core and update default options for Ampere CPUs

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

            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-8327497 AArch64: Detect Ampere-1B core and update default options for Ampere CPUs

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

            Enhancement - null JDK-8298472 AArch64: Detect Ampere-1 and Ampere-1A CPUs and set default options

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

            Commit Commit openjdk/jdk17u-dev/f3e90af7

            Commit Commit openjdk/jdk21u-dev/4243aed4

            Commit Commit openjdk/jdk/9936aeea

            Review Review openjdk/jdk17u-dev/2202

            Review Review openjdk/jdk21u-dev/249

            Review Review openjdk/jdk/17722

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                qpzhang Patrick Zhang
                qpzhang Patrick Zhang
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                Dates

                  Created:
                  Updated:
                  Resolved: