RFR: 8292591: Experimentally add back barrier-less Java thread transitions [v5]

[Robbin Ehn]

On Fri, 9 Sep 2022 16:52:24 GMT, Daniel D. Daugherty <dcubed at openjdk.org> wrote:

>> Robbin Ehn has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Fixed ws
>
> Changes requested by dcubed (Reviewer).

@dcubed-ojdk thanks for reviewing, I think I got all!

> src/hotspot/os/linux/systemMemoryBarrier_linux.cpp line 22:
> 
>> 20:  * or visit www.oracle.com if you need additional information or have any
>> 21:  * questions.
>> 22:  *
> 
> Nit: extra "*" blank line in the header should be deleted.

We have some variation, those files I look at same to have this style, so I'll leave it.

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PR: https://git.openjdk.org/jdk/pull/10123