On Mar 01 2013, Valdis.Kletnieks@xxxxxx wrote: > X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.4-dev > > On Fri, 01 Mar 2013 16:48:12 +0530, sandeep kumar said: > > > Don't you think it should throw panic()while calling the ioremap() itself. > > Because this sounds like a serious violation... > > As you noted, it does give you a warning. > > That's a kernel design philosophy - to reserve the panic() and BUG() > calls for cases where it is *known* that proceeding further is > unsafe or impossible. So the kernel does a panic() if it can't start > /sbin/init at system boot-up - because without that, further progress > is impossible. But once the system is up, we don't panic if PID 1 goes > away - because it's possible that the user has an open window, and can su > and at least do an orderly shutdown. [snippage] > So that's the design philosophy of why it gives you a warning rather than > a panic. Great explanation. Thank you. I figured it would be something vaguely like this, but I'm very new to the *linux* kernel, so I wasn't going to try to answer. -- Arlie (Arlie Stephens arlie@xxxxxxxxxxxx) _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
