Quoting Matthew Auld (2019-10-21 20:27:43)
> @@ -244,6 +247,13 @@ static void *i915_gem_object_map(const struct drm_i915_gem_object *obj,
> pgprot_t pgprot;
> void *addr;
>
> + if (i915_gem_object_is_lmem(obj)) {
> + if (type != I915_MAP_WC)
> + return NULL;
return ERR_PTR(-EINVAL) or ERR_PTR(-ENODEV);
> +
> + return i915_gem_object_lmem_io_map(obj, 0, obj->base.size);
> + }
> +
> /* A single page can always be kmapped */
> if (n_pages == 1 && type == I915_MAP_WB)
> return kmap(sg_page(sgt->sgl));
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