[Intel-gfx] [PATCH 05/17] drm/i915: fallback to normal pages on vma insert failure

[Chris Wilson]

On Tue, May 16, 2017 at 09:29:36AM +0100, Matthew Auld wrote:
> Part of the cost in choosing huge-gtt-pages is potentially using a
> larger alignment and/or size. Therefore if our vma insert fails either
> because of the insert/reserve or the pin-offset-fixed we should fallback
> to normal pages and retry before giving up.

Too late. By the point you do this, we will already have been evicting
from the GTT. We need a larger shakeup to take this trial-and-error
approach into consideration, though perhaps with just including NOEVICT,
it may make more sense.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre