RFR: Fix assertion failure of matrix size due to vm allocation granularity on Win x64

[Roman Kennke]

Am 20.12.2017 um 18:15 schrieb Zhengyu Gu:
> This patch fixes assertion failure of TestGCThreadGroups on Windows x64.
> 
>    Internal Error 
> (c:/Users/zhengyu/workspace/shenandoah-jdk10/src/hotspot/share/memory/virtualspace.cpp:103), 
> pid=6404, tid=4448
>    assert((size & (granularity - 1)) == 0) failed: size not aligned to 
> os::vm_allocation_granularity()
> 
> On Windows x64, vm_allocation_granularity is 64K, instead of 4K.
> 
> 
> Webrev: 
> file:///home/zgu/webrevs/shenandoah/matrix_size/webrev.00/index.html
> 

You posted a link to a local webrev :-)