提交 bb0e0bcf 编写于 作者: K Kashyap Chamarthy 提交者: John Ferlan

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: NKashyap Chamarthy <kchamart@redhat.com>
上级 439c27b1
...@@ -1531,8 +1531,8 @@ ...@@ -1531,8 +1531,8 @@
<dd>The virtual CPU will claim the feature is supported regardless <dd>The virtual CPU will claim the feature is supported regardless
of it being supported by host CPU.</dd> of it being supported by host CPU.</dd>
<dt><code>require</code></dt> <dt><code>require</code></dt>
<dd>Guest creation will fail unless the feature is supported by host <dd>Guest creation will fail unless the feature is supported by the
CPU.</dd> host CPU or the hypervisor is able to emulate it.</dd>
<dt><code>optional</code></dt> <dt><code>optional</code></dt>
<dd>The feature will be supported by virtual CPU if and only if it <dd>The feature will be supported by virtual CPU if and only if it
is supported by host CPU.</dd> is supported by host CPU.</dd>
......
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