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Re: [Xen-users] Xen 4.3.1 / Linux 3.12 panic


  • To: xen-users@xxxxxxxxxxxxx
  • From: Wouter de Geus <benv-xensource.com@xxxxxxxxxxxxx>
  • Date: Wed, 6 Nov 2013 11:20:05 +0100
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* Ian Campbell <Ian.Campbell@xxxxxxxxxx> [2013-11-06 09:41:39 +0000]:

> The is a cpufreq thing from the looks of it.
> 
> cpufreq differences between native Linux and Xen could cause weird
> memory corruption, manifesting as a variety of page faults, GPFs etc, I
> guess.
> 
> Perhaps investigate disabling cpufreq stuff under Xen? I'm not sure how
> one does this exactly but google through up
> http://wiki.xen.org/wiki/Xen_power_management and I saw some references
> in http://xenbits.xen.org/docs/unstable/misc/xen-command-line.html
> 
> Ian.

Thanks a lot for the insight!

I've booted my 3.12-Desman kernel under xen with 'cpufreq=none' on the xen
commandline.  So far so good (trying some kernel compiles to see if it's
stable, system has been up for 20 minutes now).
If this turns out to be stable I'll try again with cpufreq=dom0 to see if
that's also stable. I'll report my findings if you care.

If there's anything you guys want me to test please let me know.

Thanks again!

Wouter.

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