>>>>> "jun" == Jun Sun <jsun@mvista.com> writes: Hi jun> Even if you don't have it cleared in start_thread(), things jun> should be generally OK. You will have some dirty FPU content jun> instead of a all-zero one when you start a new program. But then jun> since all sane program should assign register values before they jun> first time use them, so this bug should be well hidden. I don't remind the exact details, but the problem appears to be the security implications, you can see last values of previous process. Yes, I still have to find a way where that is useful, but ... Later, Juan. -- In theory, practice and theory are the same, but in practice they are different -- Larry McVoy