[Planetlab-devel] BootCD

[Aki NAKAO]

Hi Marc,
Both kernels are patched and hacked, but not that *extensively* (for  
instance we have enabled KVM etc).
Hearing what you say, it sounds like kexec is tested primarily for the  
vanilla kernels?

Aki NAKAO
nakao at iii.u-tokyo.ac.jp
PGPKey: http://nakao.iii.u-tokyo.ac.jp/nakao.asc

On Sep 1, 2009, at 8:57 PM, Marc Fiuczynski wrote:

> Hi Aki,
>
> kexec problems are, as you said, very hairy problems.  Using kexec  
> terminology, what is the version of the "first" and "second" kernel.  
> Is the "second" kernel a vanilla kernel or something you've hacked/ 
> patched extensively?
>
> Best regards,
> Marc
>
> On Sep 1, 2009, at 7:49 AM, Aki NAKAO wrote:
>
>> Thanks for answering Yuji's questions.
>> We have not decided taking this road and modifying the original  
>> boot sequence for CoreLab (and we know we should avoid that since  
>> we have limited engineering resources).
>> The real problem is that we have recently encountered a problem in  
>> kexecing to a different version of kernel.
>> The symptom is like the one reported here and it seems a hairy  
>> problem,  and that made Yuji wonder why we are using kexec in the  
>> first place.
>> https://lists.linux-foundation.org/pipermail/fastboot/2008-February/014272.html
>>
>> I now recall you have a lot of expertise on kexec from the time  
>> when you worked on Xen+vserver kernels.
>> Do you know anything about this issue?
>
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