RFR(xs): 8221517: G1: Reserved page size for heap can be wrong

[Kim Barrett]

> On Mar 29, 2019, at 12:54 PM, sangheon.kim at oracle.com wrote:
> All fixed, thanks!
> 
> http://cr.openjdk.java.net/~sangheki/8221517/webrev.1
> http://cr.openjdk.java.net/~sangheki/8221517/webrev.1_inc_0
> Testing: local build

Looks good.