Re: irq-disabled vs vmap vs text_poke

[Mathieu Desnoyers]

* Steven Rostedt (rostedt@xxxxxxxxxxx) 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


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Mathieu Desnoyers
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