RFR: 8327990: [macosx-aarch64] Various tests fail with -XX:+AssertWXAtThreadSync [v3]

[dean.long at oracle.com]

On 3/19/24 8:20 AM, Thomas Stuefe wrote:

> I wonder wheter we could - at least as workaround for if we missed a
> spot - do wx switching as a reaction to a SIBBUS related to WX violation
>   in code cache. Switch state around, return from signal handler and
> retry operation.
>
> (Edit: tested it, does not seem to work. I guess when the SIGBUS is
> triggered in the kernel thread WX state had already been processed
> somehow).


That makes sense if the WX state is part of the signal context saved and 
restored by the signal handler.

dl
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