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    SubjectRe: [linux-pm] [RFC][PATCH 0/2 -mm] kexec based hibernation -v3
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    Date
    On Fri, 2007-09-21 at 10:43 +0200, Stefan Rompf wrote:
    > Am Donnerstag, 20. September 2007 07:34 schrieb Huang, Ying:
    >
    > > The hibernation procedure with the patch set is as follow:
    > >
    > > 1. Boot a kernel A
    > >
    > > 2. Work under kernel A
    > >
    > > 3. Kexec another kernel B (crash dump enabled) in kernel A.
    >
    > From a short glance over current Linus' arch/i386/kernel/machine_kexec.c,
    > memory for the crash dump kernel B still needs to be reserved statically when
    > booting A.
    >
    > This is one of the biggest issues with kexec based hibernation. For the
    > typical notebook user, it is totally unacceptable to reserve 16 megabytes of
    > memory just to be able to suspend to disk. And given the fact that current
    > distribution kernels are quite modular and require early module loading, even
    > more memory might be needed.
    >
    > IMHO, a plan how to fix this must exist or the concept of kexec based
    > hibernation is a waste of time.

    This issue has been resolved. The implementation method details in
    another mail with title as follow:

    [RFC][PATCH 1/2 -mm] kexec based hibernation -v3: kexec jump

    Best Regards,
    Huang Ying
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