[Intel-gfx] [PATCH] drm/i915: Codify our assumption that the Global GTT is <= 4GiB

Chris Wilson chris at chris-wilson.co.uk
Fri Jan 15 03:28:16 PST 2016

On Fri, Jan 15, 2016 at 10:20:11AM +0000, Chris Wilson wrote:
> Throughout the code base, we use u32 for offsets into the global GTT. If
> we ever see any hardware with a larger GGTT, then we run the real risk
> of silent corruption. So test for our assumption up front so that we
> have a nice reminder should the time come when it fails.
> Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
> Cc: Daniel Vetter <daniel at ffwll.ch>

>From the earlier cut-n-paste,

Reviewed-by: Ville Syrjälä <ville.syrjala at linux.intel.com>

(so I hope it still holds with the minor correction applied :)

Chris Wilson, Intel Open Source Technology Centre

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