Re: [Intel-gfx] [PATCH v2 21/22] drm/i915: Only preallocate the aliasing GTT to the extents of the global GTT

On 10 February 2017 at 19:38, Chris Wilson wrote: > 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,

[Intel-gfx] [PATCH v2 21/22] drm/i915: Only preallocate the aliasing GTT to the extents of the global GTT

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