drm/i915: Only preallocate the aliasing GTT to the extents of the global GTT

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As the aliasing GTT is only accessed via the global GTT, we will never
use more of it than we expose via the Global GTT and so we only need to
preallocate sufficient space within the ppgtt for the full GTT. Equally,
if the aliasing GTT is smaller than the global GTT, we have a serious
issue and must bail.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170215084357.19977-21-chris@chris-wilson.co.uk

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Chris Wilson 2017-02-15 08:43:55 +00:00

parent 381b943b07

commit e565ceb086

1 changed files with 11 additions and 1 deletions

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drivers/gpu/drm/i915/i915_gem_gtt.c

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