Re: [Bug #10872] x86_64 boot hang when CONFIG_NUMA=n

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On Tue, 8 Jul 2008 07:16:29 +0200 Ingo Molnar wrote:

> 
> * Randy Dunlap <randy.dunlap@xxxxxxxxxx> wrote:
> 
> > > $ git bisect start
> > > $ git bisect bad v2.6.26-rc1
> > > $ git bisect good v2.6.25
> > > 
> > > That's only about 1.29M lines of changes.
> > 
> > git bisect and normal rebooting did not find a problem.
> > 
> > I'll repeat this using kexec to boot the new kernel and see if that 
> > locates any issues... since I normally use kexec to load/test new 
> > kernels and that was how the failure occurred (occurs).
> 
> ah, so the hang only occurs if you kexec a post-v2.6.25 kernel? (from 
> any other kernel, or from a post-v2.6.25 kernel?)

Host (first) kernel is 2.6.25 with NUMA=y.
kexec of 2.6.25 with NUMA=n works, kexec of 2.6.26-rc[123456789] with
NUMA=n fails/hangs.  kexec of 2.6.26-rc* with NUMA=y works.

kernel configs will be in next email reply to YH.

---
~Randy
Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA
http://linuxplumbersconf.org/
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