[my123]

It's because Qemu is several orders of magnitude slower, it's not even in the same class of solution.

FEX is an experimental open-source solution at https://github.com/FEX-Emu/FEX, but it's still in heavy development.

[skissane]

> Qemu is several orders of magnitude slower, it's not even in the same class of solution

Why? QEMU has a JIT

[my123]

Long story... Qemu's JIT is really not what you want for high performance. TCG is much more geared towards portability as a goal.