LDT_END_ADDR       56 arch/x86/include/asm/pgtable_32_types.h #define LDT_END_ADDR		(LDT_BASE_ADDR + PMD_SIZE)
LDT_END_ADDR      121 arch/x86/include/asm/pgtable_64_types.h #define LDT_END_ADDR		(LDT_BASE_ADDR + PGDIR_SIZE)