RFR: 8317368: [JVMCI] SIGSEGV in JVMCIEnv::initialize_installed_code on libgraal [v3]

[Tom Rodriguez]

On Tue, 6 Feb 2024 16:25:04 GMT, Tom Rodriguez <never at openjdk.org> wrote:

>> This fixes some lurking issues with JVMCI and nmethod related both BarrierSetNMethod and the garbage collection of nmethods.  In particular the stack walking in c2v_iterateFrames visits many frames and needs a KeepStackGCProcessedMark for safety.  Additionally, JVMCI interacts with nmethods in complex ways and needs some sort of strong root during these interactions.  A new JavaThread field has been added that mirrors the way JVMTI keeps nmethods alive.
>
> Tom Rodriguez has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Comment updates

I resync'ed with master and mach5 testing was clean. I'll ping some likely reviewers.

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PR Comment: https://git.openjdk.org/jdk/pull/17714#issuecomment-2057493068