> I don't think this is achievable via EVENT_TUNABLE.

> If you need to detect changes made by guest OS in fwcfg then we need
> QEMU to send an event to libvirt so that it can be relayed to users.

I have already implemented in a local nutanix branch  - I may be throwing a patch set at them soon.

> Once it's merged in QEMU then libvirt can start supporting it too

Okay, thanks, I'll go with the pain-free ordering.

MH.