On Sat, 2007-01-06 at 12:55 -0800, Zachary Amsden wrote:
> Rusty Russell wrote:
> >
> > +int paravirt_write_msr(unsigned int msr, u64 val);
>
> If binary modules using debug registers makes us nervous, the
> reprogramming MSRs is also similarly bad.
Yes, but this is simply from experience. Several modules wrote msrs
(you can take out the EXPORT_SYMBOL and find them quite quickly).
> > +void raw_safe_halt(void);
> > +void halt(void);
>
> These shouldn't be done by modules, ever. Only the scheduler should
> decide to halt.
Several modules implement alternate halt loops. I guess being in a
module for specific CPUs makes sense...
Cheers!
Rusty.
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