[crac] RFR: Workaround JDK-8311164: CPU_HT is set randomly on hybrid CPUs like Alder Lake

[Anton Kozlov]

On Fri, 30 Jun 2023 10:19:20 GMT, Jan Kratochvil <jkratochvil at openjdk.org> wrote:

> SSIA

Marked as reviewed by akozlov (Lead).

src/hotspot/cpu/x86/vm_version_x86.cpp line 2597:

> 2595: 
> 2596:   // Workaround JDK-8311164: CPU_HT is set randomly on hybrid CPUs like Alder Lake.
> 2597:   features_missing &= ~CPU_HT;

Note: I just realized these missing features are different from the others, it's more "extra features" -- they are specified via the option, but not available on the current CPU.

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PR Review: https://git.openjdk.org/crac/pull/89#pullrequestreview-1507067082
PR Review Comment: https://git.openjdk.org/crac/pull/89#discussion_r1247787447