PTE_TABLE_BIT      61 arch/arm/include/asm/pgtable-3level-hwdef.h #define PTE_TABLE_BIT		(_AT(pteval_t, 1) << 1)
PTE_TABLE_BIT     147 arch/arm64/include/asm/pgtable-hwdef.h #define PTE_TABLE_BIT		(_AT(pteval_t, 1) << 1)