JDK-8303575: adjust Xen handling on Linux aarch64

[MBaesken]

After JDK-8301050 the Xen handling on aarch64 should be slightly adjusted.
The output in VM_Version::print_platform_virtualization_info was missed and needs to be added for Xen.
Additionally a new XenPVHVM virtualization type could be introduced because this describes the Xen on aarch64 better.
See also https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/virtualization-on-arm-with-xen where the naming is used.

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Progress

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• Commit message must refer to an issue

Issue

• JDK-8303575: adjust Xen handling on Linux aarch64

Reviewers

• Lutz Schmidt (@RealLucy - Reviewer)
• Martin Doerr (@TheRealMDoerr - Reviewer)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk pull/12853/head:pull/12853
$ git checkout pull/12853

Update a local copy of the PR:
$ git checkout pull/12853
$ git pull https://git.openjdk.org/jdk pull/12853/head

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Checkout this PR locally:
$ git pr checkout 12853

View PR using the GUI difftool:
$ git pr show -t 12853

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Download this PR as a diff file:
https://git.openjdk.org/jdk/pull/12853.diff

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[openjdk]

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[mlbridge]

Webrevs

• 00: Full (01b4b410)

[RealLucy]

Looks good to me.

[openjdk]

@MBaesken 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:

8303575: adjust Xen handling on Linux aarch64

Reviewed-by: lucy, mdoerr

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 68 new commits pushed to the master branch:

• d988252: 8303443: IGV: Syntax highlighting and resizing for filter editor
• afda8fb: 8303136: MemoryPoolMBean/isCollectionUsageThresholdExceeded/isexceeded005 failed with "isCollectionUsageThresholdExceeded() returned true, while threshold = 1 and used = 0"
• 1d071d0: 8303690: Prefer ArrayList to LinkedList in com.sun.jmx.mbeanserver.Introspector
• 09d469e: 8252255: Blurry rendering of SwingNode with HiDPI scaling in JavaFX
• 21a6ab1: 8303799: [BACKOUT] JDK-8302801 Remove fdlibm C sources
• 5fa9bd4: 8302189: Mark assertion failures noreturn
• 9b10c69: 8303622: JFR: Missing message with Objects.requireNonNull
• d729824: 8286781: Replace the deprecated/obsolete gethostbyname and inet_addr calls
• 5f1108f: 8303151: DCmd framework cleanups
• 32f4d8b: 8303681: JFR: RemoteRecordingStream::setMaxAge() should accept null
• ... and 58 more: https://git.openjdk.org/jdk/compare/339ca887835d6456da9fcccdc32fb7716cbc60bb...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.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[TheRealMDoerr]

LGTM.

[MBaesken]

Hi Martin and Lutz, thanks for the reviews !

/integrate

[openjdk]

Going to push as commit 8eaf84f.
Since your change was applied there have been 68 commits pushed to the master branch:

• d988252: 8303443: IGV: Syntax highlighting and resizing for filter editor
• afda8fb: 8303136: MemoryPoolMBean/isCollectionUsageThresholdExceeded/isexceeded005 failed with "isCollectionUsageThresholdExceeded() returned true, while threshold = 1 and used = 0"
• 1d071d0: 8303690: Prefer ArrayList to LinkedList in com.sun.jmx.mbeanserver.Introspector
• 09d469e: 8252255: Blurry rendering of SwingNode with HiDPI scaling in JavaFX
• 21a6ab1: 8303799: [BACKOUT] JDK-8302801 Remove fdlibm C sources
• 5fa9bd4: 8302189: Mark assertion failures noreturn
• 9b10c69: 8303622: JFR: Missing message with Objects.requireNonNull
• d729824: 8286781: Replace the deprecated/obsolete gethostbyname and inet_addr calls
• 5f1108f: 8303151: DCmd framework cleanups
• 32f4d8b: 8303681: JFR: RemoteRecordingStream::setMaxAge() should accept null
• ... and 58 more: https://git.openjdk.org/jdk/compare/339ca887835d6456da9fcccdc32fb7716cbc60bb...master

Your commit was automatically rebased without conflicts.

[openjdk]

@MBaesken Pushed as commit 8eaf84f.

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