hg: jdk/jdk: 8234794: AArch64: runtime/memory/ReadFromNoaccessArea.java crashes

[ningsheng.jian at arm.com]

Changeset: dd4b4f273274
Author:    ngasson
Date:      2019-12-19 09:47 +0800
URL:       https://hg.openjdk.java.net/jdk/jdk/rev/dd4b4f273274

8234794: AArch64: runtime/memory/ReadFromNoaccessArea.java crashes
Summary: try to map CDS shared space at 4G aligned address on AArch64
Reviewed-by: adinn, aph, jiangli, iklam

! src/hotspot/cpu/aarch64/globalDefinitions_aarch64.hpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
! src/hotspot/cpu/aarch64/macroAssembler_aarch64.hpp
! src/hotspot/cpu/ppc/globalDefinitions_ppc.hpp
! src/hotspot/share/memory/metaspace.cpp
! src/hotspot/share/memory/metaspace.hpp
! src/hotspot/share/memory/metaspaceShared.cpp
! test/hotspot/jtreg/runtime/cds/appcds/SharedBaseAddress.java