RFR: 8294729: [s390] Implement nmethod entry barriers [v2]

[Tyler Steele]

On Wed, 26 Oct 2022 20:48:32 GMT, Martin Doerr <mdoerr at openjdk.org> wrote:

>> Tyler Steele has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fixup comments
>
> src/hotspot/cpu/s390/stubGenerator_s390.cpp line 2888:
> 
>> 2886: 
>> 2887:     // Check return val of vm call
>> 2888:     // if (return val != 0)
> 
> Comment should also get updated.

Agreed. This change is complete.

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PR: https://git.openjdk.org/jdk/pull/10558