On Thu, 14 Apr 2011 10:03:46 +0100, Chris Wilson wrote: > Older chipsets do not support snooping (i.e. cache sharing between the > CPU and GPU) on tiled surfaces. So prevent userspace from being silly > should we one day expose the ability to change cache levels from > userspace. We will not need this as there is no plan to have user-mode use snooped access on older chipsets. -- keith.packard@intel.com