Cross posting from reddit here:
So, I have an Intel 660p that im going to pass through to a VM. Following the steps in the patch notes for the SM2262 controller, I put
<hostdev mode='subsystem' type='pci' managed='yes'>
<source>
<address domain='0x0000' bus='0x07' slot='0x00' function='0x0'/>
</source>
<alias name='ua-sm2262'/>
<address type='pci' domain='0x0000' bus='0x07' slot='0x00' function='0x0'/>
</hostdev>
...
<qemu:commandline>
<qemu:arg value='-set'/>
<qemu:arg value='device.ua-sm2262.x-msix-relocation=bar2'/>
</qemu:commandline>
But it seems that I get Property '.x-msix-relocation' not found , so I’m stuck. I even built qemu 5.0.0 from source. Not sure what else I’m missing.