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Commit 07e19ea4 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915: Assert that the partial VMA fits within the object 



When creating a partial VMA assert that it first fits with the parent
object, and that if it covers the whole of the parent a normal view was
created instead.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: default avatarJoonas Lahtinen <joonas.lahtinen@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20161223145804.6605-5-chris@chris-wilson.co.uk
parent 8bfc478f

drivers/gpu/drm/i915/i915_vma.c

+5 −0
Original line number Diff line number Diff line
@@ -95,8 +95,13 @@ __i915_vma_create(struct drm_i915_gem_object *obj, 
	if (view) {

		vma->ggtt_view = *view;

		if (view->type == I915_GGTT_VIEW_PARTIAL) {

			GEM_BUG_ON(range_overflows_t(u64,

						     view->params.partial.offset,

						     view->params.partial.size,

						     obj->base.size >> PAGE_SHIFT));

			vma->size = view->params.partial.size;

			vma->size <<= PAGE_SHIFT;

			GEM_BUG_ON(vma->size >= obj->base.size);

		} else if (view->type == I915_GGTT_VIEW_ROTATED) {

			vma->size =

				intel_rotation_info_size(&view->params.rotated);