Force feature policy doesn't work
I have a Core 2 Quad, and for reasons I need to be able to report the CPUID of an unsupported feature.
In libvirt though, not even with this I'm able to get it.
<cpu mode="custom" match="exact" check="none">
<model fallback="forbid">Nehalem</model>
<feature policy="force" name="popcnt"/>
<feature policy="force" name="sse4.2"/>
</cpu>
This happens because QEMU just emits an internal warning and gracefully disables unsupported features without also getting passed the x-force-features
parameter.
I'm not sure how that should intertwine with "fallback" and "check", but anyway it should be supported.