docs: formatdomain: Clarify CPU feature policy option "require"

Using the 'require' value for the 'policy' attribute indicates
that the guest will have the feature so the host CPU does not
need to support it if the hypervisor can emulate it.

E.g. 'x2apic' is emulated by QEMU even if the host does not support it:

    <feature policy='require' name='x2apic'/>

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
This commit is contained in:
Kashyap Chamarthy 2018-03-26 12:53:12 +02:00 committed by John Ferlan
parent 439c27b1ae
commit bb0e0bcf6a

View File

@ -1531,8 +1531,8 @@
<dd>The virtual CPU will claim the feature is supported regardless
of it being supported by host CPU.</dd>
<dt><code>require</code></dt>
<dd>Guest creation will fail unless the feature is supported by host
CPU.</dd>
<dd>Guest creation will fail unless the feature is supported by the
host CPU or the hypervisor is able to emulate it.</dd>
<dt><code>optional</code></dt>
<dd>The feature will be supported by virtual CPU if and only if it
is supported by host CPU.</dd>