RFR: 8351661: NMT: VMATree should support separate call-stacks for reserve and commit operations [v11]

[Gerard Ziemski]

On Thu, 10 Apr 2025 10:02:29 GMT, Afshin Zafari <azafari at openjdk.org> wrote:

>> In NMT detail mode, we need to have separate call-stacks for Reserve and Commit operations.
>> This PR adds a second stack to every node that will be used when committing (and uncommitting) the start node of a reserved region.
>
> Afshin Zafari has updated the pull request incrementally with one additional commit since the last revision:
> 
>   24 test-cases added for full coverage of cases.

Thank you for this work and your patience accommodating my feedback.

LGTM (if there are any issues I am sure we can address them in follow-ups)

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Marked as reviewed by gziemski (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/24028#pullrequestreview-2757009535