Re: kexec - 2.6.14 - loads BIOS again

["Prabhakar K." <krishkar99@xxxxxxxxx>]

From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Subject: Re: kexec - 2.6.14 - loads BIOS again
To: "Prabhakar K." <krishkar99@xxxxxxxxx>
Cc: "Kexec Mailing List" <kexec@xxxxxxxxxxxxxxxxxxx>, fastboot@xxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Thursday, October 1, 2009, 6:29 AM

"Prabhakar K." <krishkar99@xxxxxxxxx> writes:

> Sending again as it is not posted yet !!
>
> I have back ported to multiple versions of different kexec-tools. Also I
> disabled watchdogs so that the first kernel reboot is not kicked in.
> Now, with all those kexec-tools I see that it hangs
> after post_verification_setup_arch( ).
> And I had to hard reboot the router box.
>
> Is there a specific kexec tools that is known to work with 2.6.14 ? Or any
> additional changes needed ?

Almost certainly if you are getting as far as kexec-tools you are dying
someplace early in your target kernel.

>>> OK. What piece of code can cause in the target kernel to die ?

Can I take any working bzImage or vmlinux of a linux kernel(for that matter any linux kernel) and load that as my target kernel ? or does this has any restriction ?

thanks for your input !!

> Any inputs welcome , thanks in advance !!
>

Please CC me in reply.

Eric

--- On Thu, 10/1/09, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote:

From: Eric W. Biederman <ebiederm@xxxxxxxxxxxx>
Subject: Re: kexec - 2.6.14 - loads BIOS again
To: "Prabhakar K." <krishkar99@xxxxxxxxx>
Cc: "Kexec Mailing List" <kexec@xxxxxxxxxxxxxxxxxxx>, fastboot@xxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Thursday, October 1, 2009, 6:29 AM

"Prabhakar K." <krishkar99@xxxxxxxxx> writes:

> Sending again as it is not posted yet !!
>
> I have back ported to multiple versions of different kexec-tools. Also I
> disabled watchdogs so that the first kernel reboot is not kicked in.
> Now, with all those kexec-tools I see that it hangs
> after post_verification_setup_arch( ).
> And I had to hard reboot the router box.
>
> Is there a specific kexec tools that is known to work with 2.6.14 ? Or any
> additional changes needed ?

Almost certainly if you are getting as far as kexec-tools you are dying
someplace early in your target kernel.


> Any inputs welcome , thanks in advance !!
>
> Please CC me in reply.

Eric

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