Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Halil Pasic
On 10/27/2017 07:12 PM, Jiri Denemark wrote: > On Fri, Oct 27, 2017 at 17:18:44 +0200, Halil Pasic wrote: >> On 10/27/2017 04:06 PM, Christian Borntraeger wrote: > ... >>> I talked to several people and it seems that on x86 the host model will >>> also enable new features >>> that are not known

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Jiri Denemark
On Fri, Oct 27, 2017 at 17:18:44 +0200, Halil Pasic wrote: > On 10/27/2017 04:06 PM, Christian Borntraeger wrote: ... > > I talked to several people and it seems that on x86 the host model will > > also enable new features > > that are not known by older QEMUs and its considered works as designed.

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Halil Pasic
On 10/27/2017 04:06 PM, Christian Borntraeger wrote: > > > On 10/27/2017 03:40 PM, Halil Pasic wrote: >> >> >> On 10/27/2017 02:57 PM, Christian Borntraeger wrote: >>> >>> >>> On 10/27/2017 02:45 PM, Christian Borntraeger wrote: On 10/27/2017 02:31 PM, Halil Pasic wrote: gs

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Christian Borntraeger
On 10/27/2017 03:40 PM, Halil Pasic wrote: > > > On 10/27/2017 02:57 PM, Christian Borntraeger wrote: >> >> >> 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 th

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Halil Pasic
On 10/27/2017 02:57 PM, Christian Borntraeger wrote: > > > 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 a

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Christian Borntraeger
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? > >

Re: [Qemu-devel] [libvirt] [PATCH/QEMU] s390x/kvm: use cpu_model_available for guarded storage on compat machines

2017-10-27 Thread Christian Borntraeger
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 wi