RFR: 8368722: Vector API intrinsics enabled wrongly on platforms without support for misaligned vector access [v3]

[Dingli Zhang]

On Thu, 16 Oct 2025 21:20:01 GMT, Vladimir Ivanov <vlivanov at openjdk.org> wrote:

> I'm strongly in favor of improving detection logic. In the worst case, it would require performing a misaligned vector access during VM bootstrapping and checking whether it traps or not.

That makes sense to me. I will try to improve the detection making it more reliable on old kernels without good hwprobe support. I think performing a misaligned vector access during VM bootstrapping and checking whether it traps or not is a good way. Thanks for the suggestion!

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PR Review Comment: https://git.openjdk.org/jdk/pull/27506#discussion_r2443765140