+=item B<hyperv>
+
+This is Hyper-V.
+
+Status: from MSDN description, not tested.
+
+=item B<linux_vserver>
+
+This process is running in a Linux VServer container.
+
+Status: contributed by Barış Metin
+
+=item B<kvm>
+
+This is KVM.
+
+Status: confirmed by RWMJ.
+