[jdk25u] RFR: 8359064: Expose reason for marking nmethod non-entrant to JVMCI client

[Aleksey Shipilev]

On Thu, 23 Oct 2025 07:32:10 GMT, Cesar Soares Lucas <cslucas at openjdk.org> wrote:

> Hi all,
> 
> This pull request contains a backport of commit [2fe12984](https://github.com/openjdk/jdk/commit/2fe12984474656a08c4525c04a351d85be73f658) from the [openjdk/jdk](https://git.openjdk.org/jdk) repository.
> 
> The commit being backported was authored by Cesar Soares Lucas on 19 Jun 2025 and was reviewed by Doug Simon and Tom Rodriguez.
> 
> Thanks!

Note for @GoeLin, and a little status update: This one allows downstream Graal/Truffle to fix important performance potholes. Plus, it limits the divergence between mainline and JDK 25, which simplify the maintenance. (We have already picked it up in Corretto 25 for a few months.) So we would like to have it in 25u, pretty please :)

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PR Comment: https://git.openjdk.org/jdk25u/pull/335#issuecomment-3582453577