Thanks for spelling this out. When I read the post I was actually wondering if there isn't a fundamental trade-off between fast and safe. A hypervisor's basic f

Thanks for spelling this out. When I read the post I was actually wondering if there isn't a fundamental trade-off between fast and safe. A hypervisor's basic function is to add the minimum number of CPU cycles to emulate a real machine, its memory and its devices. Using safe operations, which would add a lot of cycles to do checks, would make QEMU a worse hypervisor.