External/libvirt
1
0
Fork 0
mirror of https://gitlab.com/libvirt/libvirt.git synced 2024-11-05 12:51:12 +00:00
Code Issues Packages Projects Releases Wiki Activity
3a6a725b8f
libvirt/tests/qemuxml2argvdata/q35-multifunction.xml

52 lines
2.0 KiB
XML
Raw Normal View History

qemu: use virDomainPCIAddressSetAllMulti() to set multi when needed If there are multiple devices assigned to the different functions of a single PCI slot, they will not work properly if the device at function 0 doesn't have its "multi" attribute turned on, so it makes sense for libvirt to turn it on during PCI address assignment. Setting multi then assures that the new setting is stored in the config (so it will be used next time the domain is started), preventing any potential problems in the case that a future change in the configuration eliminates the devices on all non-0 functions (multi will still be set for function 0 even though it is the only function in use on the slot, which has no useful purpose, but also doesn't cause any problems). (NB: If we were to instead just decide on the setting for multifunction at runtime, a later removal of the non-0 functions of a slot would result in a silent change in the guest ABI for the remaining device on function 0 (although it may seem like an inconsequential guest ABI change, it *is* a guest ABI change to turn off the multi bit).)
2017-01-10 05:20:11 +00:00
<domain type='qemu'>
<name>q35-test</name>
<uuid>11dbdcdd-4c3b-482b-8903-9bdb8c0a2774</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static' cpuset='0-1'>2</vcpu>
<os>
<type arch='x86_64' machine='q35'>hvm</type>
<boot dev='hd'/>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
tests: unify qemu binary paths for all qemu related tests Our test data used a lot of different qemu binary paths and some of them were based on downstream systems. Note that there is one file where I had to add "accel=kvm" because the qemuargv2xml code parses "/usr/bin/kvm" as virt type="kvm". Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
2017-04-06 16:19:48 +00:00
<emulator>/usr/bin/qemu-system-x86_64</emulator>
qemu: use virDomainPCIAddressSetAllMulti() to set multi when needed If there are multiple devices assigned to the different functions of a single PCI slot, they will not work properly if the device at function 0 doesn't have its "multi" attribute turned on, so it makes sense for libvirt to turn it on during PCI address assignment. Setting multi then assures that the new setting is stored in the config (so it will be used next time the domain is started), preventing any potential problems in the case that a future change in the configuration eliminates the devices on all non-0 functions (multi will still be set for function 0 even though it is the only function in use on the slot, which has no useful purpose, but also doesn't cause any problems). (NB: If we were to instead just decide on the setting for multifunction at runtime, a later removal of the non-0 functions of a slot would result in a silent change in the guest ABI for the remaining device on function 0 (although it may seem like an inconsequential guest ABI change, it *is* a guest ABI change to turn off the multi bit).)
2017-01-10 05:20:11 +00:00
<controller type='pci' model='pcie-root'/>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='2' function='0'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='2' function='1'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='2' function='2'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='3' function='0'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='3' function='1' multifunction='on'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='4' function='0' multifunction='off'/>
</controller>
<controller type='pci' model='pcie-root-port'>
<address type='pci' slot='4' function='1'/>
</controller>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
<controller type='pci' model='pcie-root-port'/>
</devices>
</domain>
Reference in New Issue Copy Permalink