Details
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Enhancement
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Resolution: Fixed
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P4
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21
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b05
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aarch64
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linux
Backports
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8303003 | 17.0.7 | Patrick Zhang | P4 | Resolved | Fixed | b03 |
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.
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.
Attachments
Issue Links
- backported by
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JDK-8303003 AArch64: Detect Ampere-1 and Ampere-1A CPUs and set default options
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- Resolved
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