8.12. Guest Virtual Machine Power Management

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It is possible to forcibly enable or disable BIOS advertisements to the guest virtual machine's operating system by changing the following parameters in the Domain XML for Libvirt:
    <suspend-to-disk enabled='no'/>
    <suspend-to-mem enabled='yes'/>
The element pm enables ('yes') or disables ('no') BIOS support for S3 (suspend-to-disk) and S4 (suspend-to-mem) ACPI sleep states. If nothing is specified, then the hypervisor will be left with its default value.
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