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Type: Sub-task
Resolution: Fixed
Priority: P2
Fix Version/s: 26
Affects Version/s: 24, 25
Component/s: hotspot
Labels:

Subcomponent:
runtime
Resolved In Build:
b10

Issue	Fix Version	Assignee	Priority	Status	Resolution	Resolved In Build
JDK-8365946	25.0.2	Coleen Phillimore	P2	Closed	Fixed	b01

There have been bugs and suspected C2 bugs in allocating interface and abstract classes in non-class metaspace. This RFE adds an option to disable this feature. Testing has been done with the feature on, so the new option UseClassMetaspaceForAllClasses is added with the initial default value (false) to maintain the status quo. We may still want to reduce the number of Klass stored in class-metaspace so nobody add new code to assume that it's ok to decode interface and abstract classes. Or we might remove this feature altogether.

backported by

JDK-8365946 Add option to disable allocating interface and abstract classes in non-class metaspace

Closed

relates to

JDK-8365823 Revert storing abstract and interface Klasses to non-class metaspace

Resolved

JDK-8338526 Don't store abstract and interface Klasses in 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/56a40f32

Commit(master) openjdk/jdk/da3a5da8

Review(master) openjdk/jdk25u/123

Review(master) openjdk/jdk/21769

Review(master) openjdk/jdk/26579

(5 links to)

Assignee:: Coleen Phillimore
Reporter:: Coleen Phillimore
Votes:: 0 Vote for this issue
Watchers:: 8 Start watching this issue

Created:: 2024-10-29 09:59
Updated:: 2025-08-21 09:51
Resolved:: 2025-08-04 13:15

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