RFR: 8231774: ZGC: ZVirtualMemoryManager unmaps incorrect address

[Per Liden]

Thanks!

/Per

On 10/3/19 8:27 AM, Stefan Karlsson wrote:
> Looks good.
> 
> StefanK
> 
> On 2019-10-02 23:53, Per Liden wrote:
>> When failing to map the requested address, map() in 
>> ZVirtualMemoryManager.cpp, incorrectly calls unmap(start, size) 
>> instead of unmap(res, size).
>>
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8231774
>> Webrev: http://cr.openjdk.java.net/~pliden/8231774/webrev.0
>>
>> /Per