RFR: 8257901: ZGC: Take virtual memory usage into account when sizing heap [v4]

[Per Liden]

On Thu, 10 Dec 2020 10:51:47 GMT, Erik Österlund <eosterlund at openjdk.org> wrote:

>> Per Liden has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Add workaround for AggressiveHeap
>
> Marked as reviewed by eosterlund (Reviewer).

Thanks all for reviewing!

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PR: https://git.openjdk.java.net/jdk/pull/1696