From: "Prabhakar K." <krishkar99@yahoo.com>
To: Kexec Mailing List <kexec@lists.infradead.org>
Cc: fastboot@lists.linux-foundation.org
Subject: Re: [Fastboot] kexec - 2.6.14 - loads BIOS again
Date: Mon, 28 Sep 2009 11:43:27 -0700 (PDT) [thread overview]
Message-ID: <808738.1314.qm@web65701.mail.ac4.yahoo.com> (raw)
In-Reply-To: <m1iqf6oeuy.fsf@fess.ebiederm.org>
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> Hi - After my previous posting I was able to make some progress.
>
> When I do
>
> kexec -l vmlinux --append="init 1 root=/dev/hda2" --console-serial
>
> and
> kexec -e,
>
> I get message:
>
> Starting new kernel
> I'm in purgatory
>
> And after that it still boots from BIOS (to the same first kernel).
>
> Whats the problem here?
I would recommend instrumenting up purgatory and then your target kernel.
It is quite possible the problem is in your backport.
>>>> I have instrumented the purgatory code. when I run kexec -e, It hangs for a while at
sha256_starts(&ctx); in the function verify_sha256_digest(), and then reboots to the first kernel (from BIOS). I have put debug prints in sha256_starts, but none of those are executed.
Interestingly, the same function sha256_starts is executed during kexec -l, which is called as part of update_purgatory( )( when my_load( ) is called from kexec.c).so its surprise why the same function is giving problems when kexec -e is run.
> What am I missing here?
The appropriate list. Discussion of all things kexec has moved to the kexec
list at infradead which I have cc'd.
>>> Thanks Eric. For directing me to the right mailing list.
I am not subscribed to the list, so please CC me. Thanks !!
Regards,Prabhakar
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next prev parent reply other threads:[~2009-09-28 18:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <473364.90108.qm@web65711.mail.ac4.yahoo.com>
2009-09-25 22:10 ` [Fastboot] kexec - 2.6.14 - loads BIOS again Eric W. Biederman
2009-09-28 18:43 ` Prabhakar K. [this message]
2009-09-29 0:41 ` Eric W. Biederman
2009-09-29 2:48 ` Prabhakar K.
2009-09-30 19:03 ` Prabhakar K.
2009-10-01 0:07 ` Prabhakar K.
2009-10-01 0:59 ` Eric W. Biederman
2009-10-01 21:09 ` Prabhakar K.
2009-10-02 2:03 ` Eric W. Biederman
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