Author: Luis R. Rodriguez <mcgrof@suse.com> This driver uses strong UC for the MMIO region, and ioremap_wc() for the framebuffer to whitelist for the WC MTRR that can be changed to WC. On PAT systems we don’t need the MTRR call so just use arch_phys_wc_add() there, this lets us remove all those ifdefs. Let’s also be …