RFR: JDK-8301050: Detect Xen Virtualization on Linux aarch64

[Christoph Langer]

On Thu, 26 Jan 2023 13:22:48 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> With https://bugs.openjdk.org/browse/JDK-8300266 KVM and VMWare virtualization detection has been added; this should be enhanced by Xen detection.
> However it seems that for Xen we should look at other file system locations compared to the other virtualizations.
> more /sys/hypervisor/type
> xen
> seems to be available there.

Hi Matthias,
with this code, you'd open and iterate /sys/devices/virtual/dmi/id/product_name twice. Wouldn't it be better to modify the code to first go through /sys/devices/virtual/dmi/id/product_name and check for anything it could find there in one go?

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PR: https://git.openjdk.org/jdk/pull/12217