Messages in this thread | | | Date | Fri, 8 Aug 2008 10:06:02 -0500 | From | Cliff Wickman <> | Subject | Re: [ANNOUNCE] Merkey's Kernel Debugger |
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On Fri, Aug 08, 2008 at 02:20:52PM +0200, Andi Kleen wrote: > > In a partitioned system [I work for SGI, so I'm talking about an Altix], > > there is memory sharing among multiple single-system images. And if > > one of those partitions were to panic the other partitions need to > > be informed that they cannot address the panic'd partition's memory. > > (Once that partition is rebooted any such access will cause an MCA > > in the accessor.) > > There are already existing shutdown hooks. Aren't they good enough > for that?
For shutdown, yes. But on a panic crash_kexec() gets called before the panic_notifier_list is run.
> I would feel uneasy about having arbitary drivers hook into panic(). > While I'm sure your code is great there is unfortunately a lot > of crappy driver code around.
That is Eric Biederman's concern as well. But it seems we should have a way for a user/customer to customize those events and their order, as I noted in a previous post.
-- Cliff Wickman Silicon Graphics, Inc. cpw@sgi.com (651) 683-3824
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