8363986: Heap region in CDS archive is not at deterministic address

[GoeLin]

I backport this for parity with 25.0.4-oracle.

The change needed a row of adaptions. The code touched has been refactored by two
changes before this was applied in head. JDK-8362566 would work nicely in 25, too,
but I don't see need to backport this as prereq.

SAP nghtly testing passes.
Unfortunately the tests don't force enough compressed oop modes, thus only
the tests on mac gave meaningful results, as there a shift is used.

Backporting follow-up jdk-8374712 as dependent PR

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Progress

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• JDK-8363986 needs maintainer approval

Issue

• JDK-8363986: Heap region in CDS archive is not at deterministic address (Bug - P3 - Requested)

Reviewers

• Martin Doerr (@TheRealMDoerr - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

❗ This change is not yet ready to be integrated.
See the Progress checklist in the description for automated requirements.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

@GoeLin Please do not rebase or force-push to an active PR as it invalidates existing review comments. Note for future reference, the bots always squash all changes into a single commit automatically as part of the integration. See OpenJDK Developers’ Guide for more information.

[mlbridge]

Webrevs

• 01: Full - Incremental (09b395aa)
• 00: Full (9c73d8cf)

[openjdk]

@GoeLin Please do not rebase or force-push to an active PR as it invalidates existing review comments. Note for future reference, the bots always squash all changes into a single commit automatically as part of the integration. See OpenJDK Developers’ Guide for more information.

[TheRealMDoerr]

LGTM. It's unfortunate that we don't have the refactoring in 25u.

[openjdk]

⚠️ @GoeLin This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.