8277137: Set OnSpinWaitInst/OnSpinWaitInstCount defaults to "isb"/1 for Arm Neoverse N1

[eastig]

Tested:

• make test TEST=gtest: Passed
• make run-test TEST=tier1: Passed
• make run-test TEST=tier2: Passed
• make run-test TEST=hotspot/jtreg/compiler/onSpinWait: Passed with an expected failure

Expected failure: https://bugs.openjdk.java.net/browse/JDK-8277503
The failure will be fixed by the backport of JDK-8277503.

---

Progress

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• Commit message must refer to an issue

Issue

• JDK-8277137: Set OnSpinWaitInst/OnSpinWaitInstCount defaults to "isb"/1 for Arm Neoverse N1

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk17u-dev pull/103/head:pull/103
$ git checkout pull/103

Update a local copy of the PR:
$ git checkout pull/103
$ git pull https://git.openjdk.java.net/jdk17u-dev pull/103/head

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Checkout this PR locally:
$ git pr checkout 103

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Download this PR as a diff file:
https://git.openjdk.java.net/jdk17u-dev/pull/103.diff

[bridgekeeper]

👋 Welcome back eastig! 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 backport pull request has now been updated with issue from the original commit.

[openjdk]

@eastig 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:

8277137: Set OnSpinWaitInst/OnSpinWaitInstCount defaults to "isb"/1 for Arm Neoverse N1

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 2 new commits pushed to the master branch:

• 36fc98b: 8273341: Update Siphash to version 1.0
• 3ca676c: 8269032: Stringdedup tests are failing if the ergonomically select GC does not support it

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
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.

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➡️ 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).

[mlbridge]

Webrevs

• 00: Full (695a7897)

[eastig]

/integrate

[openjdk]

@eastig
Your change (at version 695a789) is now ready to be sponsored by a Committer.

[phohensee]

/sponsor

[openjdk]

Going to push as commit fe1d8e9.
Since your change was applied there have been 65 commits pushed to the master branch:

• 5e93008: Merge
• 6f0f426: Merge
• e80c9fb: Merge
• d1df469: Merge
• 07eac08: Merge
• 6351767: Merge
• 7349d64: Merge
• f63d565: Merge
• 8cf3c0c: 8276076: Updating RE Configs for BUILD REQUEST 17.0.2+3
• dc66c34: Merge
• ... and 55 more: https://git.openjdk.java.net/jdk17u-dev/compare/c7329f33153d1f9a47dc84df240a9efe955d61f3...master

Your commit was automatically rebased without conflicts.

[openjdk]

@phohensee @eastig Pushed as commit fe1d8e9.

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