8346713: [testsuite] NeverActAsServerClassMachine breaks TestPLABAdaptToMinTLABSize.java TestPinnedHumongousFragmentation.java TestPinnedObjectContents.java

[jankratochvil]

Only TestPLABAdaptToMinTLABSize.java is a clean backport.
TestPinnedHumongousFragmentation.java and TestPinnedObjectContents.java did not exist in JDK 21.

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Progress

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• JDK-8346713 needs maintainer approval

Issue

• JDK-8346713: [testsuite] NeverActAsServerClassMachine breaks TestPLABAdaptToMinTLABSize.java TestPinnedHumongousFragmentation.java TestPinnedObjectContents.java (Bug - P4)

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[bridgekeeper]

👋 Welcome back jkratochvil! 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.

[mlbridge]

Webrevs

• 00: Full (804127b4)