RFR: 8271195: Use largest available large page size smaller than LargePageSizeInBytes when available [v3]

[Thomas Stuefe]

On Fri, 4 Feb 2022 15:37:33 GMT, Albert Mingkun Yang <ayang at openjdk.org> wrote:

> > For the heap, LargePageSizeInBytes means "use that or no large pages at all".
> 
> @tstuefe, with https://bugs.openjdk.java.net/browse/JDK-8265517, such flag has the same semantic for code cache and heap.

Thank you @albertnetymk! I now remember this again. So the rule is the JVM is free to use whatever large pages it finds, up to and including LargePageSizeInBytes. Okay, then this patch makes sense.

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PR: https://git.openjdk.java.net/jdk/pull/7326