Re: [linux-pm] Re: [PATCH 0/2] Kexec jump: The first step to kexec base hibernation

Alan Stern
2007-07-12T16:09:17Z

On Thu, 12 Jul 2007, Mark Lord wrote:

> Rafael J. Wysocki wrote:
> > On Thursday, 12 July 2007 08:43, david@lang.hm 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.

It doesn't matter. The Hibernate kernel needs to quiesce only the
devices it has been using, since it is the only kernel to run since the
system was started.

Alan Stern