PMD_SECT_WB        44 arch/arm/include/asm/pgtable-2level-hwdef.h #define PMD_SECT_WB		(PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
PMD_SECT_WB        51 arch/arm/include/asm/pgtable-3level-hwdef.h #define PMD_SECT_WB		(_AT(pmdval_t, 3) << 2)	/* normal inner write-back */