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version 1.182, 2020/11/15 14:47:55 version 1.183, 2020/11/15 14:52:16
Line 15  website](http://www.xenproject.org/). Line 15  website](http://www.xenproject.org/).
   
 [[!toc]]  [[!toc]]
   
 # Overview: Versions of Xen, Styles, NetBSD  # Overview
   
 The basic concept of Xen is that the hypervisor (xenkernel) runs on  The basic concept of Xen is that the hypervisor (xenkernel) runs on
 the hardware, and runs a privileged domain ("dom0") that can access  the hardware, and runs a privileged domain ("dom0") that can access
Line 60  is required.  Thus, a dom0 can be PVHv2. Line 60  is required.  Thus, a dom0 can be PVHv2.
 The source code uses PVH and config files use pvh; this refers to PVHv2.  The source code uses PVH and config files use pvh; this refers to PVHv2.
 See [PVH(v2)](https://wiki.xenproject.org/wiki/PVH_(v2\)_Domu).  See [PVH(v2)](https://wiki.xenproject.org/wiki/PVH_(v2\)_Domu).
   
   
 At system boot, the dom0 kernel is loaded as a module with Xen as the kernel.  At system boot, the dom0 kernel is loaded as a module with Xen as the kernel.
 The dom0 can start one or more domUs.  (Booting is explained in detail  The dom0 can start one or more domUs.  (Booting is explained in detail
 in the dom0 section.)  in the dom0 section.)
Line 107  because the hypercall interface has rema Line 106  because the hypercall interface has rema
 Older Xen had a python-based management tool called xm, now replaced  Older Xen had a python-based management tool called xm, now replaced
 by xl.  by xl.
   
   ## NetBSD versions
   
   Xen has been supported in NetBSD for a long time, at least since 2005.
   Initially Xen was PV only.
   
   NetBSD 8 and up support PV and HVM modes.
   
   Support for PVHVM and PVH is available only in NetBSD-current.
   
 # Creating a dom0  # Creating a dom0
   
 In order to install a NetBSD as a dom0, one must first install a normal  In order to install a NetBSD as a dom0, one must first install a normal
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