Re: [RFC v2 03/12] drm/i915/svm: Implicitly migrate BOs upon CPU access

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On Sat, Dec 14, 2019 at 10:58:35AM +0000, Chris Wilson wrote:
Quoting Niranjana Vishwanathapura (2019-12-13 21:56:05)
+int i915_gem_object_migrate_region(struct drm_i915_gem_object *obj,
+                                  u32 *regions, int size)
+{
+       struct drm_i915_private *dev_priv = to_i915(obj->base.dev);
+       struct intel_context *ce = dev_priv->engine[BCS0]->kernel_context;
+       int i, ret;
+
        mutex_lock(&dev_priv->drm.struct_mutex);
        ret = i915_gem_object_prepare_move(obj);

You appear to be based on a very broken code base. I'd recommend not
doing that.

Yah, this patch is dependent on the object migration support posted in LMEM
patch series. I only included this for RFC to give a full picture.

Niranjana

-Chris

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