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Date: Tue, 13 Dec 2011 03:45:58 +0000 From: Matthew Garrett <mjg59@...f.ucam.org> To: Keith Packard <keithp@...thp.com> Cc: intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, Ted Phelps <phelps@...sto.com>, Peter <pab1612@...il.com>, Lukas Hejtmanek <xhejtman@...muni.cz>, Andrew Lutomirski <luto@....edu> Subject: Re: [PATCH 2/2] drm/i915: By default, enable RC6 on IVB and SNB when reasonable On Fri, Dec 09, 2011 at 03:53:49PM -0800, Keith Packard wrote: > RC6 should always work on IVB, and should work on SNB whenever IO > remapping is disabled. RC6 never works on Ironlake. Make the default > value for the parameter follow these guidelines. Setting the value > to either 0 or 1 will force the specified behavior. I still don't like this. We're in a situation where we clearly have to disable one feature or the other on SNB - but we're disabling the one that's going to be useful to a large number of people, and leaving the niche feature enabled. If we're going to merge this then let's turn off iommu on SNB by default. -- Matthew Garrett | mjg59@...f.ucam.org -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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