RFR: 8340422: ZGC: TestAllocateHeapAt.java should not run with transparent hugepages

[Stefan Karlsson]

On Mon, 23 Sep 2024 07:43:32 GMT, Axel Boldt-Christmas <aboldtch at openjdk.org> wrote:

> Similarly to [JDK-8340146](https://bugs.openjdk.org/browse/JDK-8340146) / #21127  does not work well with transparent hugepages.
> 
> Because a machine may be configured in such a way that UseTransperetHugePages option gets ignored, the test driver must also check if it will be. As such I extracted the `test/hotspot/jtreg/runtime/os/HugePageConfiguration.java` utility into shared test library.
> 
> On none linux machines the `vm.opt.final.UseTransparentHugePages` will be null, but the test checks `os.family == "linux"` first. I have not observed an issue with the JTREG filter on none linux machines. But will double check that it does not cause an issue.

Marked as reviewed by stefank (Reviewer).

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PR Review: https://git.openjdk.org/jdk/pull/21129#pullrequestreview-2321420577