--- wikisrc/ports/xen/howto.mdwn	2021/03/05 21:52:36	1.198
+++ wikisrc/ports/xen/howto.mdwn	2021/03/07 00:41:16	1.199
@@ -49,11 +49,12 @@ See [PV](https://wiki.xen.org/wiki/Parav
 
 In HVM mode, no guest modification is required; however, hardware
 support is required, such as VT-x on Intel CPUs and SVM on AMD CPUs.
-The dom0 runs qemu to emulate hardware.
+The dom0 runs qemu to emulate hardware.  It is therefore non-sensical
+to have an HVM dom0.
 
 In PVHVM mode, the guest runs as HVM, but additionally can use PV
-drivers for efficiency.
-See [PV on HVM](https://wiki.xen.org/wiki/PV_on_HVM).
+drivers for efficiency.  Therefore it is non-sensical for to have a
+PVHVM dom0.  See [PV on HVM](https://wiki.xen.org/wiki/PV_on_HVM).
 
 There have been two PVH modes: original PVH and PVHv2.  Original PVH
 was based on PV mode and is no longer relevant at all.  PVHv2 is