RFR: 8345296: AArch64: VM crashes with SIGILL when prctl is disallowed

[Aleksey Shipilev]

On Mon, 2 Dec 2024 15:03:33 GMT, Andrew Haley <aph at openjdk.org> wrote:

> I understand, but there are compatibility issues. As far as I can tell this issue is only likely to manifest on systems where the console isn't monitored, so I'm not sure I'd print the warning unconditionally, but your call.

We print all sorts of unconditional warnings in the adjacent code, so I think it stays :)
 
> Anyway, please print something like "Use -XX:UseSVE=0 to remove this warning."

Added another blurb into the warning message.

I am running tests to see if any Hotspot test cares about any of this.

-------------

PR Comment: https://git.openjdk.org/jdk/pull/22479#issuecomment-2511803424