8367694: Fix jtreg test failure when Intel APX is enabled for KNL platforms

[vamsi-parasa]

Hi All,

This pull request contains a backport of commit e883dec6 from the openjdk/jdk repository.

The commit being backported was authored by Srinivas Vamsi Parasa on 16 Sep 2025 and was reviewed by Sandhya Viswanathan and Emanuel Peter.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8367694 needs maintainer approval

Issue

• JDK-8367694: Fix jtreg test failure when Intel APX is enabled for KNL platforms (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u.git pull/251/head:pull/251
$ git checkout pull/251

Update a local copy of the PR:
$ git checkout pull/251
$ git pull https://git.openjdk.org/jdk25u.git pull/251/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 251

View PR using the GUI difftool:
$ git pr show -t 251

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk25u/pull/251.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back sparasa! 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]

@vamsi-parasa This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8367694: Fix jtreg test failure when Intel APX is enabled for KNL platforms

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 14 new commits pushed to the master branch:

• a3854cf: 8368698: runtime/cds/appcds/aotCache/OldClassSupport.java assert(can_add()) failed: Cannot add TrainingData objects
• f5c2756: 8362204: test/jdk/sun/awt/font/TestDevTransform.java fails on Ubuntu 24.04
• ee6a040: 8365265: x86 short forward jump exceeds 8-bit offset in methodHandles_x86.cpp when using Intel APX
• ... and 11 more: https://git.openjdk.org/jdk25u/compare/3747153d91e8f412fec9b3db4e42691eafc4f290...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[openjdk]

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

[openjdk]

⚠️ @vamsi-parasa 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.

[vamsi-parasa]

/approval

[openjdk]

@vamsi-parasa usage: /approval [<id>] (request|cancel) [<text>]

[mlbridge]

Webrevs

• 00: Full (dc7f5086)

[vamsi-parasa]

/integrate

[openjdk]

@vamsi-parasa
Your change (at version dc7f508) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit e80db07.
Since your change was applied there have been 20 commits pushed to the master branch:

• 9305ebf: 8365425: [macos26] javax/swing/JInternalFrame/8160248/JInternalFrameDraggingTest.java fails on macOS 26
• a1e42d7: 8366750: Remove test 'java/awt/Choice/ChoiceMouseWheelTest/ChoiceMouseWheelTest.java' from problemlist
• a98b243: 8364454: ProblemList runtime/cds/DeterministicDump.java on macos for JDK-8363986
• ... and 17 more: https://git.openjdk.org/jdk25u/compare/3747153d91e8f412fec9b3db4e42691eafc4f290...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @vamsi-parasa Pushed as commit e80db07.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

[dwhite-intel]

looks good.

/sponsor

ha -Paul beat me to it :-)

[openjdk]

@dwhite-intel The command sponsor can only be used in open pull requests.