Re: [PATCH] x86/ibt: make is_endbr() notrace

[Peter Zijlstra]

On Mon, Sep 22, 2025 at 03:13:38PM +0800, menglong.dong@xxxxxxxxx wrote:

> > Anyway, I don't mind making is_endbr() invisible to tracing, that might
> > just have security benefits too. But I think first the ftrace folks need
> > to figure out how to best kill that recursion, because I don't think
> > is_endbr is particularly special here.
> 
> So, does this patch seem useful after all?

The use lies in making it harder to find/manipulate endbr things.

> OK, I'll send a V2 base on your following suggestion.

Hold off until Masami/Steve have fixed the ftrace recursion issue. After
that we can do this.