[jdk11u-dev] Integrated: 8253015: Aarch64: Move linux code out from generic CPU feature detection

[Reka Kovacs]

On Fri, 27 Aug 2021 20:38:26 GMT, Reka Kovacs <duke at openjdk.java.net> wrote:

> Not a clean backport. Differences to the original commit:
> 
> - Changes to files under `src/hotspot/cpu/aarch64/` and `src/hotspot/os_cpu/linux_aarch64/` are adjusted to cover hardware features supported in JDK 11.
> - As JDK 11 is built using an older C++ standard than tip, `static_assert`s need to be replaced with `STATIC_ASSERT` macros in `vm_version_linux_aarch64.cpp`.
> - The GraalVM related changes in `vmStructs_jvmci.cpp`, `AArch64HotSpotLIRGenerator.java` and `GraalHotSpotVMConfig.java` are skipped as they seem to be modifying code added in JDK 14 ([JDK-8226222](https://bugs.openjdk.java.net/browse/JDK-8226222) and [JDK-8231973](https://bugs.openjdk.java.net/browse/JDK-8229201)).
> 
> This is part of the Windows/AArch64 port.

This pull request has now been integrated.

Changeset: d336b240
Author:    Reka Kovacs <rekakovacs at microsoft.com>
Committer: Christoph Langer <clanger at openjdk.org>
URL:       https://git.openjdk.java.net/jdk11u-dev/commit/d336b240c36474c4ccbceabc33fdf7cbe618da85
Stats:     252 lines in 3 files changed: 96 ins; 124 del; 32 mod

8253015: Aarch64: Move linux code out from generic CPU feature detection
8255716: AArch64: Regression: JVM crashes if manually offline a core

Co-authored-by: Bernhard Urban-Forster <burban at openjdk.org>
Reviewed-by: akozlov, mdoerr
Backport-of: ec9bee68660acd6abf0b4dd4023ae69514542256

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PR: https://git.openjdk.java.net/jdk11u-dev/pull/299