Re: [PATCH v3 5/6] x86/ftrace: Use text_poke()

[Peter Zijlstra]

On Thu, Oct 10, 2019 at 07:28:19PM +0200, Peter Zijlstra wrote:

> Really the best solution is to move all the poking into
> ftrace_module_init(), before we mark it RO+X. That's what I'm going to
> do for jump_label and static_call as well, I just need to add that extra
> notifier callback.

OK, so I started writing that patch... or rather, I wrote the patch and
started on the Changelog when I ran into trouble describing why we need
it.

That is, I'm struggling to explain why we cannot flip
prepare_coming_module() and complete_formation().

Yes, it breaks ftrace, but I'm thinking that is all it breaks. So let me
see if we can cure that.