2f63315692
Formerly: "drm/i915: Create VMAs (part 1)" In a previous patch, the notion of a VM was introduced. A VMA describes an area of part of the VM address space. A VMA is similar to the concept in the linux mm. However, instead of representing regular memory, a VMA is backed by a GEM BO. There may be many VMAs for a given object, one for each VM the object is to be used in. This may occur through flink, dma-buf, or a number of other transient states. Currently the code depends on only 1 VMA per object, for the global GTT (and aliasing PPGTT). The following patches will address this and make the rest of the infrastructure more suited v2: s/i915_obj/i915_gem_obj (Chris) v3: Only move an object to the now global unbound list if there are no more VMAs for the object which are bound into a VM (ie. the list is empty). v4: killed obj->gtt_space some reworks due to rebase v5: Free vma on error path (Imre) v6: Another missed vma free in i915_gem_object_bind_to_gtt error path (Imre) Fixed vma freeing in stolen preallocation (Imre) Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Reviewed-by: Imre Deak <imre.deak@intel.com> [danvet: Squash in fixup from Ben to not deref a non-existing vma in set_cache_level, reported by Chris.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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