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  1. JDK
  2. JDK-8298472

AArch64: Detect Ampere-1 and Ampere-1A CPUs and set default options

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    • b05
    • aarch64
    • linux

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      Description

        Add CPU detection code for Ampere-1 and Ampere-1A CPUs, and configure default AArch64 options.

        processor : 0
        BogoMIPS :
        Features :
        CPU implementer : 0xc0
        CPU architecture: 8
        CPU variant : 0x0
        CPU part : 0xac3
        CPU revision : 0

        By the way, GCC has already had the changes to support Ampere-1 and Ampere-1A, https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605942.html. So it is time to have similar detection and support in JDK as well.

        Plan to backport to 17 once the MR gets approved to mainline.

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                qpzhang Patrick Zhang
                qpzhang Patrick Zhang
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                  Updated:
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