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drm/i915: fall back to shmem pwrite when the buffer is not accessible

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It's too expensive to move it around just for that pwrite, especially
when we're trashing on the mappable gtt part like crazy.

Tested-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
2012-03-25 19:47:38 +02:00
parent 586428852a
commit ffc62976d2
1 changed files with 1 additions and 0 deletions
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drivers/gpu/drm/i915/i915_gem.c
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@@ -771,6 +771,7 @@ i915_gem_pwrite_ioctl(struct drm_device *dev, void *data,
if (obj->gtt_space &&
obj->cache_level == I915_CACHE_NONE &&
obj->map_and_fenceable &&
obj->base.write_domain != I915_GEM_DOMAIN_CPU) {
ret = i915_gem_gtt_pwrite_fast(dev, obj, args, file);
/* Note that the gtt paths might fail with non-page-backed user