Hi. On Thu, 2008-11-06 at 10:17 +0900, KAMEZAWA Hiroyuki wrote: > On Thu, 6 Nov 2008 09:14:41 +0900 > KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> 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. > > > > To trigger "2", the user have special console to tell firmware "enable this memory". > > Such firmware console or users have to know "the system works well." And, more important, > > when the system is suspended, the firmware can't do hotplug because the kernel is sleeping. > > So, such firmware console or operator have to know the system status. > > > > Am I missing some ? Current linux can know PCI/USB hotplug while the system is suspended ? > > > *OFFTOPIC* > > I hear following answer from my friend. > > - hibernate the system > => plug USB memory > => wake up the system > => panic. > - hibernate the system > => unplug USB memory > => wake up the sytem > => panic. We currently check that the number of physical pages is the same when starting to load the image, so neither of these issues cause real problems. Regards, Nigel _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
