Re: [PATCH] [2/11] x86: Fix alternatives and kprobes to remap write-protected kernel text

[Mathieu Desnoyers <compudj@krystal.dyndns.org>]

* Jeremy Fitzhardinge (jeremy@goop.org) wrote:
> Mathieu Desnoyers wrote:
> > Hi Rusty,
> >
> > Good catch. I also still wonder why alternative (except alternative smp,
> > which is ok) and paravirt patching functions are not marked __init. I really
> > hope they are never used when NMI, MCE are enabled or when threads may
> > have been preempted in the site being patched, or it could result in an
> > illegal instruction.
> >   
> 
> We need to patch modules at load time.  Presumably an NMI/MCE handler
> will not depend on code in a being-loaded module.
> 
>     J
> 

Oh yes, I see. That's ok since the code of a being-loaded module is not
executed yet.

Thanks,

Mathieu

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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