RFR: JDK-8300266: Detect Virtualization on Linux aarch64 [v2]

[David Holmes]

On Fri, 20 Jan 2023 10:55:50 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Currently we detect virtualization on Linux x86_64 (cpuid call) and Linux ppc64le ; the result is afterwards used e.g. in hs_err and JFR output.
>> 
>> On Linux aarch64 the detection is missing, this should be added.
>> One option would be to look at /sys/devices/virtual/dmi/id/product_name and related files , at least KVM and VMWare can be detected using these files.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   switch from NULL ot nullptr

Looks to me like these should all be moved to vm_version_<os_arch>.cpp.  New RFE?

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PR: https://git.openjdk.org/jdk/pull/12071