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ca1c362a30
These tests demonstrate that, while it's now possible for the user to create PHB explicitly and manually assign devices to them, libvirt still defaults to extending the guest PCI topology using PCI bridges and making suboptimal device placement choices. The next few commits will improve on these behaviors and the tests outputs will automatically be updated to reflect this. Signed-off-by: Andrea Bolognani <abologna@redhat.com> Reviewed-by: Laine Stump <laine@laine.org>
38 lines
1.5 KiB
XML
38 lines
1.5 KiB
XML
<domain type='qemu'>
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<name>guest</name>
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<uuid>1ccfd97d-5eb4-478a-bbe6-88d254c16db7</uuid>
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<memory unit='KiB'>524288</memory>
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<vcpu placement='static'>1</vcpu>
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<os>
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<type arch='ppc64' machine='pseries'>hvm</type>
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</os>
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<devices>
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<emulator>/usr/bin/qemu-system-ppc64</emulator>
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<!-- This device will cause a new PHB to be created because of its
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address -->
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<controller type='scsi' model='virtio-scsi'>
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<address type='pci' domain='0x0000' bus='0x01' slot='0x01' function='0x0'/>
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</controller>
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<!-- This hostdev will share the same PHB as the SCSI controller
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despite being in the separate isolation group 1 (IOMMU group 0),
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because the address has been requested explicitly by the user -->
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<hostdev mode='subsystem' type='pci' managed='yes'>
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<driver name='vfio'/>
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<source>
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<address domain='0x0001' bus='0x01' slot='0x00' function='0x0'/>
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</source>
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<address type='pci' domain='0x0000' bus='0x01' slot='0x02' function='0x0'/>
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</hostdev>
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<!-- This hostdev can use neither the PHB that was just created, nor the
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default one, because it's in isolation group 2 (IOMMU group 1) -->
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<hostdev mode='subsystem' type='pci' managed='yes'>
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<driver name='vfio'/>
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<source>
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<address domain='0x0005' bus='0x90' slot='0x01' function='0x0'/>
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</source>
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</hostdev>
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<controller type='usb' model='none'/>
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<memballoon model='none'/>
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</devices>
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</domain>
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