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9eb9106ea5
Add support for using the new approach to hotplug vcpus using device_add during startup of qemu to allow sparse vcpu topologies. There are a few limitations imposed by qemu on the supported configuration: - vcpu0 needs to be always present and not hotpluggable - non-hotpluggable cpus need to be ordered at the beginning - order of the vcpus needs to be unique for every single hotpluggable entity Qemu also doesn't really allow to query the information necessary to start a VM with the vcpus directly on the commandline. Fortunately they can be hotplugged during startup. The new hotplug code uses the following approach: - non-hotpluggable vcpus are counted and put to the -smp option - qemu is started - qemu is queried for the necessary information - the configuration is checked - the hotpluggable vcpus are hotplugged - vcpus are started This patch adds a lot of checking code and enables the support to specify the individual vcpu element with qemu.
30 lines
951 B
XML
30 lines
951 B
XML
<domain type='qemu'>
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<name>QEMUGuest1</name>
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<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
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<memory unit='KiB'>219100</memory>
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<currentMemory unit='KiB'>219100</currentMemory>
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<vcpu placement='static' current='3'>6</vcpu>
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<vcpus>
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<vcpu id='0' enabled='yes' hotpluggable='no' order='1'/>
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<vcpu id='1' enabled='no' hotpluggable='yes'/>
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<vcpu id='2' enabled='no' hotpluggable='yes'/>
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<vcpu id='3' enabled='no' hotpluggable='yes'/>
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<vcpu id='4' enabled='yes' hotpluggable='yes' order='2'/>
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<vcpu id='5' enabled='yes' hotpluggable='yes' order='3'/>
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</vcpus>
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<os>
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<type arch='x86_64' machine='pc'>hvm</type>
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<boot dev='network'/>
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</os>
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<cpu>
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<topology sockets="3" cores="2" threads="1"/>
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</cpu>
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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</emulator>
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</devices>
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</domain>
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