Re: [RFC PATCH 5/6] drm/qxl: don't use ttm bo->offset

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> @@ -311,10 +311,8 @@ qxl_bo_physical_address(struct qxl_device *qdev, struct qxl_bo *bo,
>  		(bo->tbo.mem.mem_type == TTM_PL_VRAM)
>  		? &qdev->main_slot : &qdev->surfaces_slot;
>  
> -	WARN_ON_ONCE((bo->tbo.offset & slot->gpu_offset) != slot->gpu_offset);
> -
> -	/* TODO - need to hold one of the locks to read tbo.offset */
> -	return slot->high_bits | (bo->tbo.offset - slot->gpu_offset + offset);
> +	return slot->high_bits | ((bo->tbo.mem.start << PAGE_SHIFT) +
> +				  slot->gpu_offset + offset);
>  }

--verbose please.

I don't get the logic behind this change.

The other chunks look sane, calculating slot->gpu_offset
in setup_slot() certainly makes sense.

cheers,
  Gerd

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