Comment 8 for bug 1756118

It is true that libvirt does not know how to detect host CPU model on AArch64, but even if it _wants_ to know, it cannot, because even the `/proc/cpuinfo` on AArch64 doesn't show anything interesting. There are lots of vendors making different AArch64 CPUs, and they are not easily comparable. They all differ in various ways. (This is also confirmed by Jiri Denemark of libvirt.)

So it doesn't make sense to do CPU compatibility check on AArch64. And the AArch64 folks themselves recommend that the way to run KVM guests on AArch64 is via 'host-passthrough'.

So with that in mind, I'd suggest the error to be something like:

  "Host CPU compatibility check does not make
   sense on AArch64; skip CPU comparison"