Re: [2.6 patch] mark virt_to_bus/bus_to_virt as __deprecated oni386

[Arjan van de Ven]

On Tue, 2006-06-27 at 21:09 +0200, Jan Engelhardt wrote:
> >> > > cli/sti should just be removed, or at least have those drivers marked
> >> > > BROKEN... nobody is apparently using them anyway...
> >> >
> >> >Just ISDN really.
> >> >
> >> And ISDN is widespread in Germany (besides 56k and DSL(PPPOE)).
> >
> >Then there should be lots of Germans eager to fix it when it gets dealt
> >with.
> >
> 
> /* Heh, heh */
> 
> So what do I need to replace cli/sti with?

proper spinlocks ;)

cli/sti assumed to disable interrupts on all processors, and so when an
old driver uses cli/sti it's sort of a lock against any interrupt
handler (yes this is locking code not data!). In general you need to
find out what data the author wanted to protect, and just create proper
locking for that data.  

yes this is not a mechanical transformation.. if it was it would have
been done already :)


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