Run PV in PVH container: Difference between revisions

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Xen 4.11 support running of unmodified legacy PV-only guest to be run in PVH mode. This allows users to run old, PV-only distros. This simplifies management and reduces the surface of attack significantly.
Xen 4.11 support running of unmodified legacy PV-only guest to be run in PVH mode. This allows users to run old, PV-only distros. This simplifies management and reduces the surface of attack significantly. Note that slide 15 of [https://www.slideshare.net/xen_com_mgr/xpdds17-keynote-towards-a-configurable-and-slimmer-x86-hypervisor-wei-liu-citrix this presentation gives an architectural overview of PVH shim].


== Converting a PV config to a PVH shim config ==
== Converting a PV config to a PVH shim config ==

Revision as of 17:06, 14 May 2018

Xen 4.11 support running of unmodified legacy PV-only guest to be run in PVH mode. This allows users to run old, PV-only distros. This simplifies management and reduces the surface of attack significantly. Note that slide 15 of this presentation gives an architectural overview of PVH shim.

Converting a PV config to a PVH shim config

  • Shutdown VM
  • Remove any reference to builder (e.g., builder="generic")
  • Add the following two lines:
 type="pvh"
 pvshim=1
  • Restart VM

Converting a PV config to a PVH config

Icon Info.png If you have a kernel capable of booting PVH, then PVH mode is both faster and more secure than PV or PVH-shim mode.


  • Shutdown VM
  • Remove any reference to builder (e.g., builder="generic")
  • Add the following two lines:
 type="pvh"
  • Restart VM
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