Re: [libvirt] [Qemu-devel] Configuring pflash devices for OVMF firmware
Hi,
> (Migration compat is left as an exercise for the reader :-))
It's not just migration compatibility, it's also guest ABI: "the guest
can tell the difference".
Is that actually the case on x86? I don't think so.
Note: arm is different, because the flash is listed in the device tree
which is guest visible.
So, old machine types continue to get two flash devices, and new
machine types get one. In other words, we're stuck maintaining (a)
even if we decide to switch to (b).
I think that'll be true nevertheless for live migration compatibility.
cheers,
Gerd