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initial version

There is now a patch to fix the VERR_VERSION_MISMATCH error, and it should come to a repository near you in the near future.

+From 58b89b03f14fde3b5eda78b9137109b7a860a607 Mon Sep 17 00:00:00 2001
+From: Hans de Goede <hdegoede@redhat.com>
+Date: Tue, 19 Mar 2019 14:05:31 +0100
+Subject: [PATCH] virt: vbox: Implement passing requestor info to the host for
+ VirtualBox 6.0.x
+
+VirtualBox 6.0.x has a new feature where the guest kernel driver passes
+info about the origin of the request (e.g. userspace or kernelspace) to
+the hypervisor.
+
+If we do not pass this information then when running the 6.0.x userspace
+guest-additions tools on a 6.0.x host, some requests will get denied
+with a VERR_VERSION_MISMATCH error, breaking vboxservice.service and
+the mounting of shared folders marked to be auto-mounted.
+
+This commit implements passing the requestor info to the host, fixing this.