mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-11-09 23:10:08 +00:00
f7dd3a4e62
The mode can be either of "custom" (default), "host-model",
"host-passthrough". The semantics of each mode is described in the
following examples:
- guest CPU is a default model with specified topology:
<cpu>
<topology sockets='1' cores='2' threads='1'/>
</cpu>
- guest CPU matches selected model:
<cpu mode='custom' match='exact'>
<model>core2duo</model>
</cpu>
- guest CPU should be a copy of host CPU as advertised by capabilities
XML (this is a short cut for manually copying host CPU specification
from capabilities to domain XML):
<cpu mode='host-model'/>
In case a hypervisor does not support the exact host model, libvirt
automatically falls back to a closest supported CPU model and
removes/adds features to match host. This behavior can be disabled by
<cpu mode='host-model'>
<model fallback='forbid'/>
</cpu>
- the same as previous returned by virDomainGetXMLDesc with
VIR_DOMAIN_XML_UPDATE_CPU flag:
<cpu mode='host-model' match='exact'>
<model fallback='allow'>Penryn</model> --+
<vendor>Intel</vendor> |
<topology sockets='2' cores='4' threads='1'/> + copied from
<feature policy='require' name='dca'/> | capabilities XML
<feature policy='require' name='xtpr'/> |
... --+
</cpu>
- guest CPU should be exactly the same as host CPU even in the aspects
libvirt doesn't model (such domain cannot be migrated unless both
hosts contain exactly the same CPUs):
<cpu mode='host-passthrough'/>
- the same as previous returned by virDomainGetXMLDesc with
VIR_DOMAIN_XML_UPDATE_CPU flag:
<cpu mode='host-passthrough' match='minimal'>
<model>Penryn</model> --+ copied from caps
<vendor>Intel</vendor> | XML but doesn't
<topology sockets='2' cores='4' threads='1'/> | describe all
<feature policy='require' name='dca'/> | aspects of the
<feature policy='require' name='xtpr'/> | actual guest CPU
... --+
</cpu>
87 lines
3.0 KiB
XML
87 lines
3.0 KiB
XML
<domain type='qemu'>
|
|
<name>f14</name>
|
|
<uuid>553effab-b5e1-2d80-dfe3-da4344826c43</uuid>
|
|
<memory>1048576</memory>
|
|
<currentMemory>1048576</currentMemory>
|
|
<vcpu>2</vcpu>
|
|
<os>
|
|
<type arch='i686' machine='pc'>hvm</type>
|
|
<boot dev='cdrom'/>
|
|
<boot dev='hd'/>
|
|
<bootmenu enable='yes'/>
|
|
</os>
|
|
<features>
|
|
<acpi/>
|
|
<apic/>
|
|
<pae/>
|
|
</features>
|
|
<cpu mode='custom' match='exact'>
|
|
<model fallback='allow'>core2duo</model>
|
|
<vendor>Intel</vendor>
|
|
<topology sockets='1' cores='2' threads='1'/>
|
|
<feature policy='require' name='lahf_lm'/>
|
|
<feature policy='require' name='xtpr'/>
|
|
<feature policy='require' name='cx16'/>
|
|
<feature policy='require' name='tm2'/>
|
|
<feature policy='require' name='est'/>
|
|
<feature policy='require' name='vmx'/>
|
|
<feature policy='require' name='ds_cpl'/>
|
|
<feature policy='require' name='pbe'/>
|
|
<feature policy='require' name='tm'/>
|
|
<feature policy='require' name='ht'/>
|
|
<feature policy='require' name='ss'/>
|
|
<feature policy='require' name='acpi'/>
|
|
<feature policy='require' name='ds'/>
|
|
</cpu>
|
|
<clock offset='utc'/>
|
|
<on_poweroff>destroy</on_poweroff>
|
|
<on_reboot>restart</on_reboot>
|
|
<on_crash>restart</on_crash>
|
|
<devices>
|
|
<emulator>/./qemu.sh</emulator>
|
|
<disk type='file' device='disk'>
|
|
<driver name='qemu' type='qcow2'/>
|
|
<source file='/var/lib/libvirt/images/f14.img'/>
|
|
<target dev='vda' bus='virtio'/>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
|
|
</disk>
|
|
<disk type='file' device='cdrom'>
|
|
<driver name='qemu' type='raw'/>
|
|
<source file='/var/lib/libvirt/Fedora-14-x86_64-Live-KDE.iso'/>
|
|
<target dev='hdc' bus='ide'/>
|
|
<readonly/>
|
|
<address type='drive' controller='0' bus='1' unit='0'/>
|
|
</disk>
|
|
<controller type='ide' index='0'>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
|
|
</controller>
|
|
<controller type='virtio-serial' index='0'>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
|
|
</controller>
|
|
<interface type='ethernet'>
|
|
<mac address='52:54:00:71:70:89'/>
|
|
<script path='/etc/qemu-ifup'/>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/>
|
|
</interface>
|
|
<serial type='pty'>
|
|
<target port='0'/>
|
|
</serial>
|
|
<console type='pty'>
|
|
<target type='serial' port='0'/>
|
|
</console>
|
|
<input type='tablet' bus='usb'/>
|
|
<input type='mouse' bus='ps2'/>
|
|
<graphics type='spice' port='5900' autoport='no' passwd='sercet' passwdValidTo='2011-05-31T16:11:22' connected='disconnect'/>
|
|
<sound model='ac97'>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
|
|
</sound>
|
|
<video>
|
|
<model type='vga' vram='9216' heads='1'/>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
|
|
</video>
|
|
<memballoon model='virtio'>
|
|
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
|
|
</memballoon>
|
|
</devices>
|
|
</domain>
|