Re: Hibernation Redesign

Pavel Machek
2007-07-09T13:45:31Z

Hi!

> >> This approach eliminates the need for the freezer, as it would make
> >> hibernate look a lot a bit like suspend to ram from the perspective of
> >> the "old" kernel (the kernel being hibernated), as the hibernate
> >> operation itself would be completely atomic from the perspective of the
> >> "old" kernel. That is not to say, of course, that any code paths would
> >> actually be shared, or that the drivers would do the same things
> >> (because they probably would not).
>
> > Well it basically is suspend to RAM with the additional step that a
> > new kernel gets booted and writes out the data from RAM to disk then
> > shuts down.
>
> There is the key difference, though, that the drivers should do rather
> different things. In particular, rather than place the hardware in a
> low-power mode, it should place it in some state such that the new
> kernel being loaded can handle it.

Actually, when current kernel restores the snapshot... driver
requirements seem to be pretty similar. So that should not be a big
problem.
Pavel
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