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c6ff3d1535
Starting a KVM domain on s390 with old machine type (such as
s390-ccw-virtio-2.5) and without any guest CPU model configured fails
with
CPU models are not available: KVM doesn't support CPU models
QEMU error. This is cause by libvirt using host-model CPU as the default
CPU based on QEMU reporting "host" CPU model as being the default one
(see commit v5.9.0-402-g24d8202294: qemu: Use host-model CPU on s390 by
default). However, even though both QEMU and KVM support CPU models on
s390 and QEMU can give us the host-model CPU, we can't use it with old
machine types which only support -cpu host.
https://bugzilla.redhat.com/show_bug.cgi?id=1795651
Reported-by: Christian Ehrhardt <paelzer@gmail.com>
Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
25 lines
773 B
XML
25 lines
773 B
XML
<domain type='kvm'>
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<name>test</name>
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<uuid>9aa4b45c-b9dd-45ef-91fe-862b27b4231f</uuid>
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<memory unit='KiB'>262144</memory>
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<currentMemory unit='KiB'>262144</currentMemory>
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<vcpu placement='static'>1</vcpu>
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<os>
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<type arch='s390x' machine='s390-ccw-virtio-2.7'>hvm</type>
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<boot dev='hd'/>
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</os>
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<cpu mode='host-passthrough' check='none'/>
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<clock offset='utc'/>
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<on_poweroff>destroy</on_poweroff>
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<on_reboot>restart</on_reboot>
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<on_crash>destroy</on_crash>
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<devices>
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<emulator>/usr/bin/qemu-system-s390x</emulator>
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<controller type='pci' index='0' model='pci-root'/>
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<memballoon model='virtio'>
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<address type='ccw' cssid='0xfe' ssid='0x0' devno='0x0000'/>
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</memballoon>
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<panic model='s390'/>
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</devices>
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</domain>
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