RFR: 8253332: ZGC: Make heap views reservation platform independent [v2]

[Stefan Karlsson]

On Fri, 18 Sep 2020 08:40:47 GMT, Aleksey Shipilev <shade at openjdk.org> wrote:

>> Stefan Karlsson has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Review 1
>
> Looks fine to me.

Thanks @shipilev. I went ahead and updated the code to not leak out the bad address, fixed a parameter name, and added
a windows assert.

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PR: https://git.openjdk.java.net/jdk/pull/236