RFR: 8370947: Mitigate Neoverse-N1 erratum 1542419 negative impact on GCs and JIT performance [v21]

[Andrew Haley]

On Wed, 31 Dec 2025 16:06:53 GMT, Evgeny Astigeevich <eastigeevich at openjdk.org> wrote:

> > Is there any reason not to do this by default on all AArch64?
> 
> It will be turned on if AArch64 has `ctr_el0.IDC` and `ctr_el0.DIC` set. See https://github.com/openjdk/jdk/pull/28328/changes#diff-a87e260510f34ca7d9b0feb089ad982be8268c5c8aa5a71221f6738b051ea488R663

Sure, I can see that, but is there any reason not to do this by default on all AArch64?

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PR Comment: https://git.openjdk.org/jdk/pull/28328#issuecomment-3703679652