Question about forcing kernel panic on PowerMac G5 by kexec command
Mohan Kumar M
mohan at in.ibm.com
Wed May 14 00:25:41 EDT 2008
> Hi Mohan,
> Sorry for the late reply.
>> I am not sure about the latest kexec tools. Is it possible to test with
>> the kexec-tools shipped with the distro?
> I tried to test with the kexec-tools shipped with the distro before and it
> gave me the same result as the latest kexec-tools (kexec-tools-testing
>> Can you give us the contents of the reg property in the last memory node
>> in device tree?
> With the command # hexdump /proc/device-tree/memory at 0,0/reg I got
> 0000000 0000 0000 0000 0000 2000 0000 0000 0000
> 0000010 0000 0000 0000 0000 0000 0000 2000 0000
> 0000020 2000 0000 0000 0000 4000 0000 2000 0000
> 0000030 0000 0000 0000 0000 0000 0000 0000 0000
Do you have only one entry for memory node in the /proc/device-tree
Do you know last good working version of kernel (for kdump) and try to
boot into that kernel and check the memory nodes in device-tree?
kexec-tools uses reg property in the memory device nodes to calculate
the total system memory.
From above "hexdump", I could not parse the memory properties.
> Is it because of this problem that cause the system did not go the next step
> and kept showing "Sending IPI to other CPU" message?
> Thanks for your help,
More information about the kexec