git: openjdk/loom: fibers: AArch64 fixes

[duke]

Changeset: 2203df96
Author:    Ron Pressler <ron.pressler at oracle.com>
Date:      2021-06-15 12:25:42 +0000
URL:       https://git.openjdk.java.net/loom/commit/2203df96b2a10f9b46eca0b1c5fd53d53cca11b6

AArch64 fixes

! src/hotspot/cpu/aarch64/continuation_aarch64.inline.hpp
! src/hotspot/cpu/aarch64/stubGenerator_aarch64.cpp
! src/hotspot/cpu/x86/continuation_x86.inline.hpp
! src/hotspot/share/oops/instanceStackChunkKlass.cpp
! src/hotspot/share/runtime/continuation.cpp