>> Did only the 9 kernel need modifications or did the applications
>> binaries need to be recompiled as well?
>>

[...]
>
> 9vx requires no host kernel modifications or
> special privileges, and it runs unmodified
> plan9 386 binaries.


but that doesn't answer the question. the plan 9
kernel was modified. how else would it provide
access to the host's fs?

- erik