RFR: 8286302: Port JEP 425 to PPC64 [v3]

[Richard Reingruber]

On Mon, 14 Nov 2022 23:08:09 GMT, Tyler Steele <tsteele at openjdk.org> wrote:

> I see a couple failures on Linux/ppc64le when testing with `-XX:+VerifyContinuations`.
> 
> jdk/internal/vm/Continuation/Fuzz.java#default jdk/internal/vm/Continuation/Fuzz.java#preserve-fp
> 
> It may be reasonable to add these to a ProblemList.txt and address them at a different time.

Thanks for looking at the pr. The failures are due to timeouts. Depending on the load on your test system it might be necessary to increment the timeout factor (JTREG="TIMEOUT_FACTOR=8"). There were issues with the test before (see https://bugs.openjdk.org/browse/JDK-8290211).

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PR: https://git.openjdk.org/jdk/pull/10961