On 6 February 2017 at 08:45, Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> wrote: > The drm_mm range manager (within i915_address_space) uses a special > drm_mm_node that excludes the unavailable range (beyond the end of the > drm_mm). However, we play games with the global GTT to use the head_node > to exclude the tail page but tell ourselves that the whole range is > available. This causes an issue when we try to evict using the full > range of the global GTT which is wider than the drm_mm, resulting in > complete confusion and castrophe. One way to resolve this would be to catastrophe > use a reserved node to exclude the guard page, or we can treat the > drm_mm's head_node as our guard page and assign it the appropriate > colour. > > Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx> Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx> _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
