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Date: Tue, 28 Jun 2016 13:28:00 +0530
From: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reply-To: bharata@linux.vnet.ibm.com
References: <5772275D.8090400@redhat.com>
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Message-Id: <20160628075800.GF27296@in.ibm.com>
Subject: Re: [Qemu-devel] pseries machine does not like older CPUs anymore
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To: Thomas Huth <thuth@redhat.com>
Cc: qemu-ppc@nongnu.org, David Gibson <david@gibson.dropbear.id.au>, QEMU Developers <qemu-devel@nongnu.org>

On Tue, Jun 28, 2016 at 09:29:33AM +0200, Thomas Huth wrote:
> 
>  Hi Bharata,
> 
> there seems to be a regression with current QEMU master: The pseries
> machine does not work with older 64-bit ppc CPUs anymore. With QEMU
> 2.6.0, it is possible to run:
> 
>  qemu-system-ppc64 -nographic -M pseries -cpu 970
> 
> or
> 
>  qemu-system-ppc64 -nographic -M pseries -cpu POWER5+
> 
> but with QEMU master, I now only get a "Unable to find sPAPR CPU Core
> definition" error message and then QEMU quits.
> 
> At a quick glance, this seems to be related to the new CPU hotplug
> code... so could you maybe have a look?

Yes, I had added core support for POWER7 and POWER8 only. Let me send
a patch to add the support for 970, POWER5 and POWER6.

Regards,
Bharata.