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SubjectRe: irq-disabled vs vmap vs text_poke
* Steven Rostedt (rostedt@goodmis.org) wrote:
>
> On Tue, 17 Feb 2009, Mathieu Desnoyers wrote:
> > >
> >
> > Anyway dynamic ftrace only need to do code patching at early boot,
> > right? Or do you need also to patch the call sites a bit later too ?
> > Because there is a text_poke_early for that purpose : modifying code
> > when it is still writable.
>
> It modifies the code both at early boot up, and when it is enabled later
> on at run time.
>
> -- Steve
>

OK, so without text_poke, how does it deal with kernel with text pages
marked read-only after boot ?

Mathieu


--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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