On Mon, Sep 23, 2019 at 11:54:46AM +0200, Kamil Rytarowski wrote: > I propose to add a fallback inside libc to the older syscalls. In case > of ENOSYS pick older syscall and zero the new struct field.
This is not how we do compat. You always have to have a new kernel before updating userland. Why would this change be different? Martin