# Cloud Hypervisor driver

Contents

- Example guest domain XML configurations

Cloud Hypervisor is an open source Virtual Machine Monitor (VMM) that runs on top of KVM. The project focuses on exclusively running modern, cloud workloads, on top of a limited set of hardware architectures and platforms. Cloud workloads refers to those that are usually run by customers inside a cloud provider. For our purposes this means modern operating systems with most I/O handled by paravirtualised devices (i.e. virtio), no requirement for legacy devices, and 64-bit CPUs.

The libvirt Cloud Hypervisor driver is intended to be run as a session driver without privileges. The cloud-hypervisor binary itself should be setcap cap_net_admin+ep (in order to create tap interfaces).

Expected connection URI would be

ch:///session

## Example guest domain XML configurations

The Cloud Hypervisor driver in libvirt is in its early stage under active development only supporting a limited number of Cloud Hypervisor features.

Firmware is from hypervisor-fw

Note: Only virtio devices are supported

    <domain type='kvm'>
      <name>cloudhypervisor</name>
      <uuid>4dea22b3-1d52-d8f3-2516-782e98ab3fa0</uuid>
      <os>
        <type>hvm</type>
        <kernel>hypervisor-fw</kernel>
      </os>
      <memory unit='G'>2</memory>
      <devices>
        <disk type='file'>
          <source file='disk.raw'/>
          <target dev='vda' bus='virtio'/>
        </disk>
        <interface type='ethernet'>
          <model type='virtio'/>
        </interface>
      </devices>
      <vcpu>2</vcpu>
    </domain>