Integrated: 8348647: CDS dumping commits 3GB when large pages are used

[Stefan Karlsson]

On Fri, 24 Jan 2025 13:34:18 GMT, Stefan Karlsson <stefank at openjdk.org> wrote:

> CDS inadvertently commits large pages when dumping and -XX:+UseLargePages is used. The fix is simply to use the memory reservation API that doesn't try to allocate large pages.
> 
> FWIW, In the future, as a separate RFE, I think that we should change the overloads so that the simplest overloaded function reserves memory without large pages.
> 
> I verified manually by looking at /proc/meminfo that we're not using large pages for the symbols after this change.

This pull request has now been integrated.

Changeset: f81772a4
Author:    Stefan Karlsson <stefank at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/f81772a49ebfa197bac7bf05cf7d468d819f742a
Stats:     4 lines in 1 file changed: 3 ins; 0 del; 1 mod

8348647: CDS dumping commits 3GB when large pages are used

Reviewed-by: aboldtch, iklam

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PR: https://git.openjdk.org/jdk/pull/23299