On Wed, 28 Jun 2017, Leonid Yegoshin wrote: > The bigger problem is a prefetch overrun to device registers. AT use is just > nuisance. That isn't however what the patch addresses, not at least according to the description provided. How far beyond the data copied do we prefetch anyway, and can't we simply waste a page's worth of space or so at the physical end of each RAM area present in a given system? Or perhaps use it for something we know for sure that won't ever be copied. Maciej
