TASK_SIZE_USER32 48 arch/powerpc/include/asm/task_size_64.h (test_tsk_thread_flag(tsk, TIF_32BIT) ? TASK_SIZE_USER32 : \ TASK_SIZE_USER32 53 arch/powerpc/include/asm/task_size_64.h #define TASK_UNMAPPED_BASE_USER32 (PAGE_ALIGN(TASK_SIZE_USER32 / 4)) TASK_SIZE_USER32 69 arch/powerpc/include/asm/task_size_64.h ((is_32bit_task()) ? TASK_SIZE_USER32 : DEFAULT_MAP_WINDOW_USER64) TASK_SIZE_USER32 75 arch/powerpc/include/asm/task_size_64.h #define STACK_TOP_USER32 TASK_SIZE_USER32