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qemu: Add support for hot/cold-(un)plug of shmem devices

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This is needed in order to migrate a domain with shmem devices as that
is not allowed to migrate.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
This commit is contained in:
Martin Kletzander
2016-09-12 15:40:48 +02:00
parent 06524fd52c
commit fb2d0cc633
12 changed files with 445 additions and 5 deletions
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65
tests/qemuhotplugtestdomains/qemuhotplug-base-live+ivshmem-doorbell.xml Normal file
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<domain type='kvm' id='7'>
<name>hotplug</name>
<uuid>d091ea82-29e6-2e34-3005-f02617b36e87</uuid>
<memory unit='KiB'>4194304</memory>
<currentMemory unit='KiB'>4194304</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/libexec/qemu-kvm</emulator>
<controller type='usb' index='0'>
<alias name='usb'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
</controller>
<controller type='ide' index='0'>
<alias name='ide'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='scsi' index='0' model='virtio-scsi'>
<alias name='scsi0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</controller>
<controller type='pci' index='0' model='pci-root'>
<alias name='pci'/>
</controller>
<controller type='virtio-serial' index='0'>
<alias name='virtio-serial0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</controller>
<input type='mouse' bus='ps2'>
<alias name='input0'/>
</input>
<input type='keyboard' bus='ps2'>
<alias name='input1'/>
</input>
<memballoon model='none'>
<alias name='balloon0'/>
</memballoon>
<shmem name='shmem0'>
<model type='ivshmem-plain'/>
<size unit='M'>4</size>
<alias name='shmem0'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
</shmem>
<shmem name='shmem1'>
<model type='ivshmem-doorbell'/>
<server path='/var/lib/libvirt/shmem-shmem1-sock'/>
<msi ioeventfd='on'/>
<alias name='shmem1'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/>
</shmem>
</devices>
<seclabel type='none' model='none'/>
</domain>