Small objects that only occupy a single page are naturally contiguous,
so mark them as such and allow them the special abilities that come with
it.
A more thorough treatment would extend i915_gem_object_pin_map() to
support discontiguous lmem objects, following the example of
ioremap_prot() and use get_vm_area() + remap_io_sg().
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/i915/gem/i915_gem_region.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_region.c b/drivers/gpu/drm/i915/gem/i915_gem_region.c
index d50adac12249..1515384d7e0e 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_region.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_region.c
@@ -107,7 +107,10 @@ void i915_gem_object_init_memory_region(struct drm_i915_gem_object *obj,
{
INIT_LIST_HEAD(&obj->mm.blocks);
obj->mm.region = intel_memory_region_get(mem);
+
obj->flags |= flags;
+ if (obj->base.size <= mem->min_page_size)
+ obj->flags |= I915_BO_ALLOC_CONTIGUOUS;
mutex_lock(&mem->objects.lock);
--
2.25.0.rc0
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