* kexec on SMP mips64?
@ 2008-01-31 18:25 Chris Friesen
2008-02-01 9:32 ` Ralf Baechle
2008-02-01 12:21 ` Nicolas Schichan
0 siblings, 2 replies; 3+ messages in thread
From: Chris Friesen @ 2008-01-31 18:25 UTC (permalink / raw)
To: linux-mips
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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kexec on SMP mips64?
2008-01-31 18:25 kexec on SMP mips64? Chris Friesen
@ 2008-02-01 9:32 ` Ralf Baechle
2008-02-01 12:21 ` Nicolas Schichan
1 sibling, 0 replies; 3+ messages in thread
From: Ralf Baechle @ 2008-02-01 9:32 UTC (permalink / raw)
To: Chris Friesen; +Cc: linux-mips
On Thu, Jan 31, 2008 at 12:25:10PM -0600, Chris Friesen wrote:
> 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
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: kexec on SMP mips64?
2008-01-31 18:25 kexec on SMP mips64? Chris Friesen
2008-02-01 9:32 ` Ralf Baechle
@ 2008-02-01 12:21 ` Nicolas Schichan
1 sibling, 0 replies; 3+ messages in thread
From: Nicolas Schichan @ 2008-02-01 12:21 UTC (permalink / raw)
To: Chris Friesen; +Cc: linux-mips
On Thursday 31 January 2008 19:25:10 you wrote:
Hi,
> 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,
--
Nicolas Schichan
^ permalink raw reply [flat|nested] 3+ messages in thread
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2008-01-31 18:25 kexec on SMP mips64? Chris Friesen
2008-02-01 9:32 ` Ralf Baechle
2008-02-01 12:21 ` Nicolas Schichan
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