[jdk21u-dev] RFR: 8345296: AArch64: VM crashes with SIGILL when prctl is disallowed [v3]

[Lenny Primak]

On Fri, 13 Dec 2024 08:21:25 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> @GoeLin We should consider fixing this bug in the upcoming January 2025 release. Jvm crash on different platforms, tested Alpine, AL2, AL2023, macOS 15.2+docker.
>> @shipilev please confirm
>
>> @GoeLin We should consider fixing this bug in the upcoming January 2025 release. Jvm crash on different platforms, tested Alpine, AL2, AL2023, macOS 15.2+docker. @shipilev please confirm
> 
> Yes, we are planning to pick this fix in Corretto release for January. I think this patch is beneficial to have in all January releases as well. This is ultimately 21u and 17u maintainers' call.

Hi @shipilev @krk 

Looking a bit further into this, I do not understand what the "root cause" of this issue is.
Is this PR a workaround?
For example, running on any Arm machines I have access to (Mac, Graviton Linux, etc.) I cannot get the
`-XX:UseSVE=1` to actually work.

What architecture does this support currently, if any?
It doesn't work on Mac M4, Mac M1, and under VM in Mac M1 or M4, etc.
Is the root cause somewhere in MacOS? If it is, I can't find one.

Thank you

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/1222#issuecomment-2544230995