DT_CODE_EXECUTE_ONLY
desc->long_mode = (type & DT_CODE_EXECUTE_ONLY) ? 1 : 0;
set_segment_descriptor(&gBootGDT[KERNEL_CODE_SEGMENT], DT_CODE_EXECUTE_ONLY,
set_segment_descriptor(&gBootGDT[USER_CODE_SEGMENT], DT_CODE_EXECUTE_ONLY,
set_segment_descriptor(&gBootGDT[KERNEL_CODE_SEGMENT], DT_CODE_EXECUTE_ONLY,
set_segment_descriptor(&gBootGDT[USER_CODE_SEGMENT], DT_CODE_EXECUTE_ONLY,