I use version 0.15 of qemu with marss cycle-accurate simulator.
After making checkpoints in an image, I get this error, while trying to
boot it (i.e. not using loadvm to run checkpoint, but just starting the
image).
This kernel requires an x86-64 CPU, but only detected an i686 CPU.
Unable to boot - please use a kernel appropriate for your CPU
Interesting thing is that when I issue -loadvm checkpointname