Re: [PATCH 04/19] drm/i915/stolen: treat stolen local as normal local memory

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On 12/04/2021 10:05, Matthew Auld wrote:
Underneath it's the same stuff, so things like the PTE_LM bits for the
GTT should just keep working as-is.

Signed-off-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gem/i915_gem_lmem.c | 5 ++++-
  1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
index ce1c83c13d05..017db8f71130 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_lmem.c
@@ -19,7 +19,10 @@ const struct drm_i915_gem_object_ops i915_gem_lmem_obj_ops = {
bool i915_gem_object_is_lmem(struct drm_i915_gem_object *obj)
  {
-	return obj->ops == &i915_gem_lmem_obj_ops;
+	struct intel_memory_region *mr = obj->mm.region;
+
+	return mr && (mr->type == INTEL_MEMORY_LOCAL ||
+		      mr->type == INTEL_MEMORY_STOLEN_LOCAL);
  }
struct drm_i915_gem_object *


Passable I guess. Although there is also i915_gem_object_is_stolen so it is not immediately clear what are the semantics of i915_gem_object_is_lmem vs that one. Almost like we need more "hierarchy" in region types, or flags of some sort, but I haven't looked at the callers to have a good idea what would work best.

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko
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