[Intel-gfx] [PATCH 4/5] drm/i915: Use eLLC/LLC by default when available

[Ben Widawsky]

On Thu, Jul 04, 2013 at 08:17:09PM +0200, Daniel Vetter wrote:
> On Thu, Jul 04, 2013 at 11:02:06AM -0700, Ben Widawsky wrote:
> > DRI clients really should be using MOCS to get fine grained streaming
> > cache controls. With that note, I *hope* that this patch doesn't improve
> > performance overwhelmingly, because if it does - it means there is a
> > problem elsewhere.
> > 
> > In any case, the kernel, and old userspace should get some benefit from
> > this, so let's do it. eLLC is always a good default, and really not
> > using it is the special case for MOCS.
> > 
> > References: http://www.intel.com/newsroom/kits/restricted/ha$well!/pdfs/4th_Gen_Intel_Core_PressBriefing_5-29.pdf (page 57)
> > 
> > Signed-off-by: Ben Widawsky <ben at bwidawsk.net>
> 
> Iris is the marketing name and likely to stick around for a bit (like HD
> Graphics), I'd vote to use the codename for this thing here, i.e. crw.
> -Daniel
>
I think we've agreed on IRC to leave this as is?
-- 
Ben Widawsky, Intel Open Source Technology Center