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Date:      Tue, 08 Nov 2011 15:14:32 -0600
From:      Russell Cattelan <cattelan@thebarn.com>
To:        Andriy Gapon <avg@FreeBSD.org>
Cc:        freebsd-hackers@FreeBSD.org
Subject:   Re: kexec  or similar for FreeBSD
Message-ID:  <4EB99BB8.3000401@thebarn.com>
In-Reply-To: <4EB67C2A.4000906@FreeBSD.org>
References:  <4DFA4C47.8060503@digitalelves.com> <4EA5A676.5040500@thebarn.com> <4EB67C2A.4000906@FreeBSD.org>

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On 11/6/11 6:23 AM, Andriy Gapon wrote:
> on 24/10/2011 20:55 Russell Cattelan said the following:
>> So it has been a while and a lot of hair pulling but kload is
>> sorta alive and kicking. It can now load the kernel from
>> userspace, copy it over the running kernel and jump the the
>> kernel entry point.
>> 
>> I'm still having problems getting through the boot process due
>> to interrupts arriving for unconfigured handlers. Fatal Trap
>> (30)
> 
> Just in case, is your original kernel running SMP?
> 
I'm working on the SMP stuff now.
Trying to get the processors in a state where
the restart process can complete.

For now I removed the panic call in the unknown interrupt case.


What I finally figured out was that starting up the system
was overwriting the page tables and caused any of AP's still
looking at those locations to cause qemu / kvm to reset  :-(

- -Russell


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