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Type: Enhancement
Resolution: Fixed
Priority: P3
Fix Version/s: 26
Affects Version/s: 25
Component/s: hotspot
Labels:

Subcomponent:
runtime
Resolved In Build:
b17

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8368995	25.0.2	Coleen Phillimore	P3	Resolved	Fixed	master

The change to store interface and abstract classes to non-class metaspace doesn't save that much space in the class metaspace or materially increase the number of classes that can be stored there, and it's found to have obscure bugs in C2 and other parts of the system. So this should be reverted. All Klasses should be stored in Class Metaspace if UseCompressedKlassPointers (deprecated) is true.

backported by

JDK-8368995 Revert storing abstract and interface Klasses to non-class metaspace

Resolved

relates to

JDK-8343218 Add option to disable allocating interface and abstract classes in non-class metaspace

Resolved

JDK-8361211 C2: Final graph reshaping generates unencodeable klass constants

Resolved

JDK-8338526 Don't store abstract and interface Klasses in class metaspace

Resolved

links to

Commit(master) openjdk/jdk25u/ee89511e

Commit(master) openjdk/jdk/fa00b249

Review(master) openjdk/jdk25u/256

Review(master) openjdk/jdk/27295

(3 links to)

Assignee:: Coleen Phillimore

Reporter:: Coleen Phillimore

Votes:: 0 Vote for this issue

Watchers:: 7 Start watching this issue

Created:: 2025-08-19 13:52

Updated:: 1 week ago 05:42

Resolved:: 2025-09-19 05:01

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