FIXADDR_USER_END  250 arch/x86/vdso/vdso32-setup.c 	gate_vma.vm_end = FIXADDR_USER_END;
FIXADDR_USER_END 2799 mm/memory.c    	gate_vma.vm_end = FIXADDR_USER_END;
FIXADDR_USER_END 2826 mm/memory.c    	if ((addr >= FIXADDR_USER_START) && (addr < FIXADDR_USER_END))