RFR: 8362193: Re-work MacOS/AArch64 SpinPause to handle SB

Mon Jul 21 12:57:40 UTC 2025

On Mon, 21 Jul 2025 09:02:17 GMT, Andrew Haley <aph at openjdk.org> wrote:

> Do you not think we should implement the Arm-recommended solution in https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/multi-threaded-applications-arm?

When we get armv8.7 hardware, I'd like to try their solution.
`ISB`-based solution is looked tuned for Graviton 2/3/4. I see it is implemented to support delays requested in ns. Do we request ns delays in Hotspot?

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PR Comment: https://git.openjdk.org/jdk/pull/26387#issuecomment-3096687839