23.14. Hypervisor Features
23.14. Hypervisor Features Hypervisors may allow certain CPU or machine features to be enabled ( state='on' ) or disabled ( state='off' ). ... <features> <pae/> <acpi/> <apic/> <hap/> <privnet/> <hyperv> <relaxed state='on'/> </hyperv> </features> ... Figure 23.24. Hypervisor features All features are listed within the <features> element, if a <state> is not specified it is disabled. The available features can be found by calling the capabilities XML, but a common set for fully virtualized domains are: Table 23.10. Hypervisor features elements State Description <pae> Physical address extension mode allows 32-bit guest virtual machines to address more than 4 GB of memory. <acpi> Useful for power management. For example, with KVM guest virtual machines it is required for graceful shutdown to work. <apic> Allows the use of programmable IRQ management. This element has an optional attribute eoi with values on and off , which sets the availability of EOI (End of Interrupt) for the guest virtual machine. <hap> Enables the use of hardware assisted paging if it is available in the hardware.
<features> <pae/> <acpi/> <apic/> <hap/> <privnet/> <hyperv> <relaxed state='on'/> </hyperv> </features>