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kexec on SMP mips64?

DISCUSSION Chris Friesen 3 participants 3 messages Jan 31, 2008 – Feb 1, 2008 MIPS

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Hi all,

We're starting work on an embedded highly-available product using dual Octeon cpus, and I'm looking into the possibility of using kexec/kdump as a "flight recorder" to dump fault information to a persistant storage location.

I saw the patch adding initial support for kexec, but I was curious about the current status. Is anyone using kexec for mips64 SMP systems?
Is it known to be broken? I'm just trying to get a feel for how much
work might be involved.

Thanks,

Chris

#1 lore raw
Quoted 9 lines · Chris Friesen

We're starting work on an embedded highly-available product using dual Octeon cpus, and I'm looking into the possibility of using kexec/kdump as a "flight recorder" to dump fault information to a persistant storage location.

I saw the patch adding initial support for kexec, but I was curious about the current status. Is anyone using kexec for mips64 SMP systems? Is it known to be broken? I'm just trying to get a feel for how much work might be involved.

I would classify the code as untested and suspect.

Ralf

#2 lore raw
In reply to Chris Friesen

On Thursday 31 January 2008 19:25:10 you wrote:

Hi,

Quoted 9 lines

We're starting work on an embedded highly-available product using dual Octeon cpus, and I'm looking into the possibility of using kexec/kdump as a "flight recorder" to dump fault information to a persistant storage location.

I saw the patch adding initial support for kexec, but I was curious about the current status. Is anyone using kexec for mips64 SMP systems?
Is it known to be broken? I'm just trying to get a feel for how much
work might be involved.

The code used to work on the 32bit mips board I have access to, but as far as I know it has not been tested on 64bit. I have not tested it on SMP, but chances are that kexec on mips is broken here too.

Regards,

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Nicolas Schichan