You would replace function calls with syscalls ? Yeah well, if you omit performance and complexity, why not .. io_uring is nice. Yet my application have to call

You would replace function calls with syscalls ? Yeah well, if you omit performance and complexity, why not .. io_uring is nice. Yet my application have to call that lzma function and get the result now : you now add cross-process synchronization (via the kernel => syscall) as well as insert the scheduler in the mix