[linux-pm] Re: [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump
Rafael J. Wysocki
rjw at sisk.pl
Wed Oct 24 16:38:02 EDT 2007
On Thursday, 11 October 2007 22:54, Pavel Machek wrote:
> > > That's certainly possible. We already pass a very small amount of data between
> > > the boot and resuming kernels at the moment, and it's done quite simply - by
> > > putting the variables we want to 'transfer' in a nosave page/section.
> > Well, if the boot and image kernels are different, which is now possible on
> > x86_64 with some recent patches (currently in -mm), the nosave trick won't
> > work.
> I guess we should remove the nosave.... at least from x86-64. If
> someone tries to use it, he'll get a nasty surprise.
I'll try to prepare a patch for that when I have a bit of time.
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