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Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_availab


From: Christian Borntraeger
Subject: Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines
Date: Fri, 27 Oct 2017 14:45:55 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0


On 10/27/2017 02:31 PM, Halil Pasic wrote:
gs is explicitly disabled.
> 
> Now that I think about it, maybe the 2.9 binary is going to reject
> the explicit gs flag altogether, because it's unknown.
> 
> Isn't this a problem? 

No. This is exactly the _solution_ and not the problem. The target will reject
unknown cpu features and migration will be aborted. This is exactly what the CPU
model is for.





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