On Thursday, 12 July 2007 15:51, Mark Lord wrote: > Rafael J. Wysocki wrote: > > On Thursday, 12 July 2007 08:43, david@xxxxxxx wrote: > >> On Wed, 11 Jul 2007, Jeremy Fitzhardinge wrote: > >> > >>> Andrew Morton wrote: > .. > >> 8. hibernate kernel does syspend-to-ram to put the devices into a known > >> safe state. > > Again, the devices should be quiesced rather then suspended in this step. > > That's just not possible. The Hibernate kernel will not have all > of the same device drivers as the mainline kernel. Or at least that's > what people have previously stated here. OK, one more problem to solve. :-) > >>>> This sounds awesome. Am I correct in expecting that ultimately the > >>>> existing hibernation implementation just goes away and we reuse (and hence > >>>> strengthen) the existing kexec (and kdump?) infrastructure? > > No, not so simple. We still need much of the code to santize devices > upon wakeup from hibernation. And adding this extra reboot-kernel step > in the midst of hibernate will double the time it takes (ugh). > > Currently, TuxOnIce(suspend2) takes about 10 seconds to suspend my notebook. > Switching to this new scheme would double that to 10 seconds to boot/probe, > plus the original 10 seconds to hibernate. Assuming the new implementation > even comes close to suspend2 speed. How much RAM is there in your machine? Greetings, Rafael -- "Premature optimization is the root of all evil." - Donald Knuth _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
