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Date: Tue, 12 Jun 2012 12:15:18 +0200
From: Christian Borntraeger <borntraeger@de.ibm.com>
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Subject: Re: [Qemu-devel] [PATCH 4/8] s390: stop target cpu on sigp initial
	reset
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To: Alexander Graf <agraf@suse.de>
Cc: Jens Freimann <jfrei@de.ibm.com>, Cornelia Huck <cornelia.huck@de.ibm.com>, Jens Freimann <jfrei@linux.vnet.ibm.com>, Heinz Graalfs <graalfs@linux.vnet.ibm.com>, qemu-devel <qemu-devel@nongnu.org>

On 12/06/12 11:42, Alexander Graf wrote:
> Jens Freimann wrote:
>> From: Christian Borntraeger <borntraeger@de.ibm.com>
>>
>> We must not run the target cpu after an initial reset. This makes
>> system_reset more reliable for smp guests.
>>   
> 
> Why?

After an initial reset, the cpu is in a state (PSW=0) that causes program check
loops if the cpu thread starts before the cpu is properly set up, iow we might
burn cpu and have the cpu in a state that it is not supposed to be.

Christian