RFR: 8298059: Linked stack watermarks don't support nesting [v4]

Tue Dec 13 16:09:14 UTC 2022

On Tue, 13 Dec 2022 16:02:11 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

>> The KeepStackGCProcessedMark facility used to ensure a thread (possibly remote) remains fully processed in its scope, has not yet had to support nesting. As it turns out, they can now nest after JDK-8294924. So this patch adds support for nesting. Tested ZGC specific tests tier 1-8, general testing 1-3 and manually tested the two tests that failed and got problem listed.
>
> Erik Österlund has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Make linked stack watermarks explicitly thread unsafe

Looks good.

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Marked as reviewed by rehn (Reviewer).

PR: https://git.openjdk.org/jdk/pull/11530