SWP_OFFSET_FIRST_BIT 252 arch/x86/include/asm/pgtable-3level.h #define SWP_OFFSET_FIRST_BIT (_PAGE_BIT_PROTNONE + 1) SWP_OFFSET_FIRST_BIT 211 arch/x86/include/asm/pgtable_64.h #define SWP_OFFSET_FIRST_BIT (_PAGE_BIT_PROTNONE + 1)