> No doubt it's simpler than QEMU but I wonder if adding tests to QEMU, even if they're only for the specific architectures they're running (most likely x86-64)

> No doubt it's simpler than QEMU but I wonder if adding tests to QEMU, even if they're only for the specific architectures they're running (most likely x86-64) would have been just as usable. A little later in the post I believe this is somewhat addressed: > QEMU code lacks unit tests and has many interdependencies that would make unit testing extremely difficult. Personally based on my previous experience at VMware and passing familiarity with QEMU, I think they made the right call. (I work at Google, but not on the hypervisor)