Hi. On Thu, 2008-11-06 at 09:53 +0900, KAMEZAWA Hiroyuki wrote: > On Wed, 05 Nov 2008 16:28:01 -0800 > Dave Hansen <dave@xxxxxxxxxxxxxxxxxx> wrote: > > > On Thu, 2008-11-06 at 09:14 +0900, KAMEZAWA Hiroyuki wrote: > > > Ok, please consider "when memory hotplug happens." > > > > > > In general, it happens when > > > 1. memory is inserted to slot. > > > 2. the firmware notifes the system to enable already inserted memory. > > > > > > To trigger "1", you have to open cover of server/pc. Do you open pc while the system > > > starts hibernation ? for usual people, no. > > > > You're right, this won't happen very often. We're trying to close a > > theoretical hole that hasn't ever been observed in practice. But, we > > don't exactly leave races in code just because we haven't observed them. > > I think this is a classic race. > > > > If we don't close it now, then someone doing some really weirdo hotplug > > is going to run into it at some point. Who knows what tomorrow's > > hardware/firmware will do? > > > Hmm, people tend to make crazy hardware, oh yes. the pc may fly in the sky with rocket engine. It doesn't even have to be crazy. Just imagine someone bumping a button on the case while plugging in the memory and that button being configured to make the machine hibernate. Regards, Nigel _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
