From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jay Lan <jlan@sgi.com>
Date: Fri, 04 Aug 2006 01:47:14 +0000
Subject: Re: [Fastboot] Ia64 kdump patch
Message-Id: <44D2A722.3000304@sgi.com>
List-Id: <linux-ia64.vger.kernel.org>
References: <20060608083516.GH28607@verge.net.au>
In-Reply-To: <20060608083516.GH28607@verge.net.au>
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To: linux-ia64@vger.kernel.org

Zou Nan hai wrote:
> On Fri, 2006-07-28 at 05:41, Jay Lan wrote:
> 
>>Hi,
>>
>>I applied the patch to 2.6.18-rc2. However, compilation failed
>>at machine_shutdown() of arch/ia64/kernel/machine_kexec.c on
>>an sn2 machine.
>>
>>It was easy to figure out irq_descp() is gone and idesc->handle
>>is replaced with idesc->chip. But this code in machine_shutdown()
>>caused an error:
>>
>>...
>>if (cpu != smp_processor_id())
>>cpu_down(cpu);
>>}
>>}
>>#elif defined(CONFIG_SMP)
>>smp_call_function(kexec_stop_this_cpu, (void *)image->start, 0, 0); <=>>#endif
>>
>>'image' is undefined in the code. Was it a global? Where was it
>>declared?
>>
>>Thanks,
>>- jay
>>
> 
>   Hi, can you try if it works with CONFIG_HOTPLUG_CPU enabled?
>   Thanks
>   Zou Nan hai

Sorry i have been pulled away on something else...
With CONFIG_HOTPLUG_CPU enabled, the problem code would not get
compiled, thus i was able to create a kernel rpm. Unfortunately
i failed to boot the sn2 kernel...

So i switched to my reference box, an ia64 HP zx box. It booted
up OK (tiger defconfig). Then i got stuck on a stupid quesiton:
I was not able to run the 'kexec' command to load the kernel
specified in the '-p' parameter. What kernel was i supposed
to specify there? The one i built? Or, a reqular kernel that
proves to work?

Thanks,
  - jay