L_PTE_YOUNG       119 arch/arm/include/asm/pgtable-2level.h #define L_PTE_YOUNG		(_AT(pteval_t, 1) << 1)
L_PTE_YOUNG        70 arch/arm/include/asm/pgtable-3level.h #define L_PTE_YOUNG		(_AT(pteval_t, 1) << 10)	/* AF */