Shenandoah and aarch64

[guoge (A)]

>> Well, pretty much same as jdk11. We want to first backport LRB and 
>> friends, which should clean up the shared code changes very 
>> considerably. And after that, we shall comb through:
>> 
>> https://builds.shipilev.net/patch-openjdk-shenandoah-jdk8-only-shared
>> /
>> hotspot/
>> 
>> and sort out whatever is no longer needed.
>> 
>> Right now it's mixed up with aarch64 changes, which is why I'd 
>> probably push aarch64 to jdk8u first, which should be whatever is:
>> 
>> http://hg.openjdk.java.net/aarch64-port/jdk8u/hotspot/
>> 
>> When this is done, we can take the complete patch and push it at once 
>> to jdk8u.
>> 
>> Do you agree?
>
>That sounds sensible. AArch64 is much less intrusive to the 8u code base than Shenandoah.

We are interested in this issue. May I ask if there is any update on this please? 

Guo Ge