Comment by FeepingCreature

What if QEMU ends up faster than native? I could imagine a future where programs are built unoptimized or with `-Os` for download size, and optimized by the operating system before or during execution, with x86 or arm (or risc-v!) ending up as the default "portable executable instruction format" for a whole bunch of CPU architectures. Where the first thing the OS or even the BIOS loads is qemu...