Does kexec on IA64 work?

TuskenTower tuskentower at
Mon May 14 13:13:19 EDT 2007

On 5/11/07, Bernhard Walle <bwalle at> wrote:
> * Amul Shah <amul.shah at> [2007-05-11 23:12]:
> > I am using a redhat derived 2.6.18 linux kernel and I am experiencing a
> > panic when the second kernel boots.  I can't find the exact set of
> > emails that I want to tell me that kexec on IA64 isn't ready yet.
> Well, it basically works ...
> > Horms said this a month ago:
> >
> >         My recommendation is that 2.6.21rc3 is a farily good release for
> >         kexec,
> >         and if you aren't worried about ia64 then 2.6.20 is probably
> >         good too.
> >         If you really need something against 2.6.9, then I guess you
> >         will have
> >         to try to pull the patches out of git, but that is going to be
> >         really hard work given that 2.6.9 is quite old now.
> >
> > For the curious, the panic log is below.  I did a cursory inspection of
> > the kernel sources and found that the function start_secondary is called
> > from head.S.  I don't know much about IA64 arch and assembly, so I
> > thought I would ask first if the IA64 implementation works.
> Did you try the 'maxpus=1' option for the panic kernel?
> Thanks,
>    Bernhard

I'll give the maxcpus option a try.  However, I used a kexec since the
kdump failed and the people testing the functionality weren't sure
what else to do.

Amul (yes the same as the thread initiator)

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