--- wikisrc/ports/xen/howto.mdwn	2021/03/15 00:11:52	1.203
+++ wikisrc/ports/xen/howto.mdwn	2021/03/15 00:25:54	1.204
@@ -27,7 +27,7 @@ PR.
 
 The basic concept of Xen is that the hypervisor (xenkernel) runs on
 the hardware, and runs a privileged domain ("dom0") that can access
-disks/networking/etc.  One then runs additonal unprivileged domains
+disks/networking/etc.  One then runs additional unprivileged domains
 (each a "domU"), presumably to do something useful.
 
 This HOWTO addresses how to run a NetBSD dom0 (and hence also build
@@ -45,9 +45,9 @@ Xen supports different styles of guests.
 [[!table data="""
 Style of guest	|description				|NetBSD dom0?	|NetBSD domU?
 PV		|Paravirtualization (hypercalls)   	|yes		|yes
-HVM		|unmodified guest - domU perceives HW	|N/A		|yes
-PVHVM		|Like HVM but also PV drivers		|N/A		|current only
-PVH		|					|not yet	|current only
+HVM		|unmodified guest - domU perceives HW	|can run guests	|yes
+PVHVM		|Like HVM but also PV drivers		|can run guests	|current only
+PVH		|Lightweight HVM (no qemu) and PV	|not yet	|current only
 """]]
 
 In Para-Virtualized (PV) mode, the guest OS does not attempt to access
@@ -85,8 +85,9 @@ There is a concept of Xen running on ARM
 
 The dom0 system should be amd64.  (Instructions for i386PAE dom0 have been removed from the HOWTO.)
 
-The domU can be i386PAE or amd64.
-i386PAE at one point was considered as [faster](https://lists.xen.org/archives/html/xen-devel/2012-07/msg00085.html) than amd64.
+The domU can be i386 PAE or amd64.
+i386 PAE at one point was considered as [faster](https://lists.xen.org/archives/html/xen-devel/2012-07/msg00085.html) than amd64.
+However, as of 2021 it is normal to use amd64 as the domU architecture, and use of i386 is dwindling.
 
 ## Xen Versions
 
@@ -105,17 +106,17 @@ Xen Version	|Package Name	|Xen CPU Suppo
 
 See also the [Xen Security Advisory page](http://xenbits.xen.org/xsa/).
 
-Older Xen had a python-based management tool called xm, now replaced
-by xl.
+Older Xen had a python-based management tool called xm; this has been
+replaced by xl.
 
 ## NetBSD versions
 
 Xen has been supported in NetBSD for a long time, at least since 2005.
 Initially Xen was PV only.
 
-NetBSD has supported PV for a very long time, in both dom0 and domU.
-NetBSD >=8 supports HVM mode as a domU (HVM as a dom0 does not make
-sense).
+NetBSD Xen has always supported PV, in both dom0 and domU; for a long
+time this was the only way.  NetBSD >=8 as a dom0 supports HVM mode in
+domUs (HVM as a dom0 does not make sense).
 
 Support for PVHVM and PVH is available only in NetBSD-current; this is
 currently somewhat experimental, although PVHVM appears reasonably