ioremap_change_attr 304 arch/x86/mm/ioremap.c if (ioremap_change_attr(vaddr, size, prot_val) < 0) { ioremap_change_attr 556 arch/x86/mm/pat.c ioremap_change_attr((unsigned long)__va(offset), size, flags) < 0) { ioremap_change_attr 337 arch/x86/pci/i386.c ioremap_change_attr((unsigned long)__va(addr), len, flags)) {