Re: [PATCH 13/16] drm/i915: don't use the first stolen page on Broadwell

From: Daniel Vetter <daniel@ffwll.ch>
To: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 13/16] drm/i915: don't use the first stolen page on Broadwell
Date: Wed, 26 Aug 2015 09:48:51 +0200	[thread overview]
Message-ID: <20150826074851.GT20434@phenom.ffwll.local> (raw)
In-Reply-To: <20150819115534.GP5176@intel.com>

On Wed, Aug 19, 2015 at 02:55:34PM +0300, Ville Syrjälä wrote:
> On Sat, Aug 15, 2015 at 09:30:18AM +0100, Chris Wilson wrote:
> > On Fri, Aug 14, 2015 at 06:34:18PM -0300, Paulo Zanoni wrote:
> > > The spec says we just can't use it.
> > 
> > But what about when we inherit a framebuffer at that address?
> 
> Indeed. I asked the same question several times during the past attempts
> at this, and even tried to outline a potential solution at least once [1]

Paulo's only patching the insert_node_in_range allocator, for fbcon
takeover we use reserve_node. I think this patch seems to do what you want
it to do, no need for fancier schemes.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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