RFR: 8370240: [PPC64] jhsdb jstack cannot handle continuation stub

[Richard Reingruber]

On Tue, 21 Oct 2025 05:31:25 GMT, Christoph Langer <clanger at openjdk.org> wrote:

>> This is a port of 8369979 for PPC. It allows to calculate caller SP from `CodeBlob` for continuation stub.
>> It also enables the test `test/hotspot/jtreg/serviceability/sa/TestJhsdbJstackWithVirtualThread.java` for PPC.
>
> test/hotspot/jtreg/serviceability/sa/TestJhsdbJstackWithVirtualThread.java line 40:
> 
>> 38:  * @bug 8369505
>> 39:  * @requires vm.hasSA
>> 40:  * @requires (os.arch == "amd64" | os.arch == "x86_64" | os.arch == "aarch64" | os.arch == "riscv64" | os.arch == "ppc64" | os.arch == "ppc64le")
> 
> Is there still an arch that is unsupported? Otherwise the whole line can be dropped, no?

I think it can be removed.

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PR Review Comment: https://git.openjdk.org/jdk/pull/27902#discussion_r2447333892