[Intel-gfx] [PATCH v3 5/5] drm/i915: stolen memory use ttm backend

[Thomas Hellström]

Hi,


On 4/12/22 21:38, Robert Beckett wrote:
> +struct ttm_resource *
> +i915_gem_stolen_reserve_range(struct drm_i915_private *i915,
> +			      resource_size_t size,
> +			      u64 start, u64 end)
>   {
> -	int ret;
> +	struct intel_memory_region *mem = i915->mm.stolen_region;
>   
> -	if (!drm_mm_initialized(&i915->mm.stolen))
> -		return -ENODEV;
> -
> -	/* WaSkipStolenMemoryFirstPage:bdw+ */
> -	if (GRAPHICS_VER(i915) >= 8 && start < 4096)
> -		start = 4096;

Did we lose this Workaround?

Need to continue reviewing this patchnext week.


Thx,

Thomas




> -
> -	mutex_lock(&i915->mm.stolen_lock);
> -	ret = drm_mm_insert_node_in_range(&i915->mm.stolen, node,
> -					  size, alignment, 0,
> -					  start, end, DRM_MM_INSERT_BEST);
> -	mutex_unlock(&i915->mm.stolen_lock);
> +	if (!mem)
> +		return ERR_PTR(-ENODEV);
> +	return intel_region_ttm_resource_alloc(mem, size, start, end, I915_BO_ALLOC_CONTIGUOUS);
> +}
>   
> -