On Sun, 11 Nov 2007, Benjamin Herrenschmidt wrote:
>
> > Removed this as well, also seemed to work. Please note, however, that
> > this is just running kernbench. But this did seem to get rid of some
> > of the warnings as well. ;-) Now only have the xics_startup() warning.
> >
> > > Overall, looks fine !
> >
> > I bet that there are more gotchas lurking in there somewhere, but in
> > the meantime here is the updated patch.
> >
> > Signed-off-by: Paul E. McKenney <[email protected]>
> > ---
>
> Well, I suppose the patch could go in, maybe with some ifdef's around
> the bits in _switch_to, there's little point in doing that on non-rt
> kernels.
As Nick Piggin already stated, and I'll even state it for the RT kernel,
we do not allow preemption in switch_to. So it is safe to remove those
"preempt_disable" bits from the patch.
-- Steve
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