On Fri, 2014-11-28 at 08:45 +0530, Madhavan Srinivasan wrote:
> > Can't we just unconditionally clear at as long as we do that after we've
> > saved it ? In that case, it's just a matter for the fixup code to check
> > the saved version rather than the actual CR..
> >
> I use CR bit setting in the interrupt return path to enter the fixup
> section search. If we unconditionally clear it, we will have to enter
> the fixup section for every kernel return nip right?
As I said above. Can't we look at the saved version ?
IE.
- On interrupt entry:
* Save CR to CCR(r1)
* clear CR5
- On exit
* Check CCR(r1)'s CR5 field
* restore CR
Cheers,
Ben.
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