[systemd-devel] [PATCH 1/2] detect-virt: detect in best-heuristic order

Mantas Mikulėnas grawity at gmail.com
Wed Nov 4 05:55:19 PST 2015

On Wed, Nov 4, 2015 at 3:52 PM, Lennart Poettering <lennart at poettering.net>

> On Wed, 04.11.15 15:54, Andrei Borzenkov (arvidjaar at gmail.com) wrote:
> > 04.11.2015 00:04, Andrew Jones пишет:
> > >afaict, this will fix a regression caused by commit 75f86906c5.
> > >Where we used to report "kvm" before that patch, without this patch,
> > >we would only report "qemu".
> >
> > Are you sure it is regression? QEMU is a program (platform) while KVM is
> > technology. Modern VirtualBox can use KVM as PV interface but it still
> > remains VirtualBox. QEMU may use KVM as PV interface but it still remains
> > QEMU.
> >
> > Where does it matter? Is anything broken because of this change?
> I am pretty sure that vbox should be reported as vbox even if it uses
> kvm as backend. qemu-kvm should be reported as kvm, and any other qemu
> as qemu.

As I understand it, VirtualBox doesn't use KVM as *backend*; it only
exposes a KVM-like paravirt interface to *guests*.

Mantas Mikulėnas <grawity at gmail.com>
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