RFR: 8256253: Defer Biased Locking obsoletion to JDK 18

[Coleen Phillimore]

On Wed, 18 Nov 2020 12:52:08 GMT, Coleen Phillimore <coleenp at openjdk.org> wrote:

>> Hi all,
>> 
>> Please review the following change to defer biased-locking obsoletion to 18, as discussed in [1].
>> I updated the special_jvm_flags table and re-enabled gtest verify_special_flags.
>> 
>> Thanks,
>> Patricio
>> 
>> [1] https://mail.openjdk.java.net/pipermail/hotspot-dev/2020-November/045454.html
>
> Looks good.  Amazing how many product options there are.

I have an alternate idea.  I wonder if for LTS we should remove the BiasedLocking other options as planned, and leave the main option in place until JDK 18.  Then we wouldn't have to test and support the variations of the code that the other options turn on and off.

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PR: https://git.openjdk.java.net/jdk/pull/1281