doc: add tooltip for real-time vCPU option checkbox
</xs:element>
<xs:element name="real_time_vcpu" type="Boolean" default="n">
<xs:annotation acrn:title="Real-time vCPU">
- <xs:documentation>Whether this vCPU is used for real-time-critical workloads.</xs:documentation>
+ <xs:documentation>Check "Real-time vCPU" for each vCPU used for real-time workloads. Then configure cache usage in the Hypervisor/Advanced/Cache Allocation Technology (CAT) configuration option. There you'll see Real-time vCPUs separated from vCPUs you allocate to other tasks. See :ref:`rdt_configuration` for more details.</xs:documentation>
</xs:annotation>
</xs:element>
</xs:all>
