On Mon, Jan 20, 2014 at 09:38:59AM +0100, Peter Zijlstra wrote:
> On Fri, Jan 17, 2014 at 10:41:41AM -0500, Don Zickus wrote:
> > I could have removed the ENABLE bit too, but was worried it would impact
> > BIOS vendors secret ability to monitor cpu states. I figured the ability to
> > generate a
On Fri, Jan 17, 2014 at 10:41:41AM -0500, Don Zickus wrote:
> I could have removed the ENABLE bit too, but was worried it would impact
> BIOS vendors secret ability to monitor cpu states. I figured the ability to
> generate a PMI or not is not interesting to them and chose that route instead.
Yo
On Fri, Jan 17, 2014 at 10:41:41AM -0500, Don Zickus wrote:
> I tested this on a P4 we have in our lab. After two or three crashes, I could
> normally reproduce the problem. Now after 10 crashes, everything continues
> to boot correctly.
>
> Cc: Dave Young
> Cc: Vivek Goyal
> Cc: Cyrill Gorcun
A bunch of unknown NMIs have popped up on a Pentium4 recently when booting
into a kdump kernel. This was exposed because the watchdog timer went
from 60 seconds down to 10 seconds (increasing the ability to reproduce
this problem).
What is happening is on boot up of the second kernel (the kdump o
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