Messages in this thread | | | Subject | Re: Query: Kdump: Core Image ELF Format | From | (Eric W. Biederman) | Date | 23 Mar 2005 12:54:05 -0700 |
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Vivek Goyal <vgoyal@in.ibm.com> writes:
> On Wed, 2005-03-23 at 13:26 +0900, Fernando Luis Vazquez Cao wrote: > > Hi all. > > > > On Tue, 2005-03-08 at 18:20 +0530, vivek goyal wrote: > > > Core image ELF headers are prepared before crash and stored at a safe > > > place in memory. These headers are retrieved over a kexec boot and final > > > elf core image is prepared for analysis. > > > > Regarding the preparation of the ELF headers, I think we should also > > take into consideration hot-plug memory and create appropriate > > mechanisms to deal with it. > > > > Assuming that both insertion and removal of memory trigger a hotplug > > event that is subsequently handled by the relevant hotplug agent(*), the > > latter could be modified so that, on successful memory onlining, > > additional PT_LOAD headers are created and tucked in a safe place > > together with the others. > > I think, re-loading the panic kernel in such event should be an easier > solution. Current kexec system call interface does not allow to read > back already stored segments, which is necessary to append new PT_LOAD > headers to the existing program header list and update ELF header.
I thought that is what he was describing.
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