[PATCH] drm/i915: By default, enable RC6 on IVB and SNB when reasonable

[Eugeni Dodonov]

On Tue, Nov 22, 2011 at 18:15, Matthew Garrett <mjg at redhat.com> wrote:

> On Fri, Nov 18, 2011 at 10:41:29PM -0800, Keith Packard wrote:
>
> > +     /*
> > +      * Only enable RC6 if all dma remapping is disabled, or if
> > +      * there's no iommu present in the machine.
> > +      */
> > +     if (INTEL_INFO(dev)->gen == 6)
> > +             return no_iommu || dmar_disabled;
>
> So the user has to choose between 5W of power saving or having dmar? And
> we default to giving them dmar?