From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Gleixner <tglx@linutronix.de>
Subject: Re: 3.0.4-rt14 "shutdown -h now" hangs on x86 32b
Date: Tue, 4 Oct 2011 23:20:24 +0200 (CEST)
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Cc: Simon Sudler <Simon.Sudler@iis.fraunhofer.de>,
	Darren Hart <dvhart@linux.intel.com>,
	linux-rt-users <linux-rt-users@vger.kernel.org>
To: Mike Galbraith <efault@gmx.de>
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On Tue, 4 Oct 2011, Mike Galbraith wrote:

> On Tue, 2011-10-04 at 09:52 +0200, Simon Sudler wrote: 
> > Hi Darren,
> > 
> > i had the same problem on a Z530 with all RT kernels 3.0. I didn't 
> > search for the reason, however the problem went away when i used the 
> > "Intel Atom" at the "Processor family" option.
> 
> I see something similar at least on my Q6600 and E5620 boxen.

That should be solved by a CPU hotplug fix in rt16. Could you please
verify?

Thanks,

	tglx