_PAGE_PKEY_BIT3 73 arch/x86/include/asm/pgtable_types.h _PAGE_PKEY_BIT3) _PAGE_PKEY_BIT3 20 arch/x86/include/uapi/asm/mman.h ((vm_flags) & VM_PKEY_BIT3 ? _PAGE_PKEY_BIT3 : 0))