__PAGE_KERNEL_WC  105 include/asm-x86/pgtable.h #define __PAGE_KERNEL_IO_WC		(__PAGE_KERNEL_WC | _PAGE_IOMAP)
__PAGE_KERNEL_WC  111 include/asm-x86/pgtable.h #define PAGE_KERNEL_WC			__pgprot(__PAGE_KERNEL_WC)