_PAGE_CA_WB       119 include/asm-xtensa/pgtable.h #define _PAGE_PRESENT	(_PAGE_VALID | _PAGE_CA_WB | _PAGE_ACCESSED)
_PAGE_CA_WB       137 include/asm-xtensa/pgtable.h # define _PAGE_DIRECTORY (_PAGE_VALID | _PAGE_ACCESSED | _PAGE_CA_WB)