hg: jdk/jdk: 8224820: ZGC: Support discontiguous heap reservations

[erik.osterlund at oracle.com]

Changeset: a7f16447085e
Author:    eosterlund
Date:      2019-09-24 10:04 +0000
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/a7f16447085e

8224820: ZGC: Support discontiguous heap reservations
Reviewed-by: pliden, stefank

- src/hotspot/os/linux/gc/z/zVirtualMemory_linux.cpp
+ src/hotspot/os/posix/gc/z/zVirtualMemory_posix.cpp
! src/hotspot/share/gc/z/zPageAllocator.cpp
! src/hotspot/share/gc/z/zVirtualMemory.cpp
! src/hotspot/share/gc/z/zVirtualMemory.hpp