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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 14:57:22 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 |
On 10/27/2017 02:45 PM, Christian Borntraeger wrote: > > > 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. FWIW, I think in your particular case the QEMU will reject the z14 cpu and not even come to checking the gs.
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