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    SubjectRe: [Fastboot] [PATCH] kexec on ia64
    On Tue, 04 Apr 2006 20:49:49 -0600 (Eric W. Biederman) wrote:

    > KAMEZAWA Hiroyuki <> writes:
    > > Hi, I have a question about kexec/kdump.
    > >
    > > How does kdump know memory layout (of old kernel) now ?
    > >
    > > I'm working for memory hotplug. When memory is hot-added, memory layout changes.
    > > But I think there is no code to manage memory layout information of added
    > > memory.
    > It is passed from one kernel to another, and it is memorized when you load
    > the crash dump kernel. If your memory layout changes you need to reload
    > the crash dump kernel from user space with the appropriate hotplug script.
    > Unless this happens often it shouldn't be a problem.

    > And yes this does leave a small race during which kexec on panic won't
    > work.

    Hmm.. Okay.
    Before reloading kdump kernel, kdump continues to use old information.
    (when adding, it's not be big problem.)

    Thank you.
    - Kame

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