RFR: 8280419: Remove dead code related to VerifyThread and verify_thread() [v2]

[Thomas Stuefe]

On Thu, 16 Feb 2023 04:23:17 GMT, David Holmes <dholmes at openjdk.org> wrote:

>> This is code that was copied from the sparc port into the arm, ppc and s390 ports, but was never actually implemented.
>> 
>> I can't really test those platforms, but hopefully GHA builds will suffice, otherwise I need the various porters to confirm the changes.
>> 
>> Thanks.
>
> David Holmes has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains two commits:
> 
>  - Merge branch 'master' into 8280419-verifyThread
>  - 8280419: Remove dead code related to VerifyThread and verify_thread()

Marked as reviewed by stuefe (Reviewer).

Changes look good to me. GHAs are not there though.

I tested arm manually and it runs fine, rejecting VerifyThread as expected.

Maybe @RealLucy can eyeball the IBM platform changes.

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PR: https://git.openjdk.org/jdk/pull/12506