Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-25 Thread Collin Walling
On 11/14/19 10:44 AM, Jiri Denemark wrote: > On s390 machines host-passthrough and host-model CPUs result in the same > guest ABI (with QEMU new enough to be able to tell us what "host" CPU is > expanded to, which was implemented around 2.9.0). So instead of using > host-passthrough CPU when there'

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-25 Thread Ján Tomko
On Thu, Nov 14, 2019 at 04:44:54PM +0100, Jiri Denemark wrote: On s390 machines host-passthrough and host-model CPUs result in the same guest ABI (with QEMU new enough to be able to tell us what "host" CPU is expanded to, which was implemented around 2.9.0). So instead of using host-passthrough C

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-22 Thread Boris Fiuczynski
On 11/19/19 3:02 PM, Jiri Denemark wrote: On Mon, Nov 18, 2019 at 18:34:36 +0100, Boris Fiuczynski wrote: On 11/15/19 4:14 PM, Jiri Denemark wrote: On Fri, Nov 15, 2019 at 15:55:04 +0100, Christian Borntraeger wrote: On 15.11.19 15:47, Jiri Denemark wrote: On Fri, Nov 15, 2019 at 15:12:18

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-19 Thread Jiri Denemark
On Mon, Nov 18, 2019 at 18:34:36 +0100, Boris Fiuczynski wrote: > > > On 11/15/19 4:14 PM, Jiri Denemark wrote: > > On Fri, Nov 15, 2019 at 15:55:04 +0100, Christian Borntraeger wrote: > >> > >> > >> On 15.11.19 15:47, Jiri Denemark wrote: > >>> On Fri, Nov 15, 2019 at 15:12:18 +0100, Boris Fiucz

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-18 Thread Boris Fiuczynski
On 11/15/19 4:14 PM, Jiri Denemark wrote: On Fri, Nov 15, 2019 at 15:55:04 +0100, Christian Borntraeger wrote: On 15.11.19 15:47, Jiri Denemark wrote: On Fri, Nov 15, 2019 at 15:12:18 +0100, Boris Fiuczynski wrote: Just a heads up. After installing libvirt rpms of this branch all my existi

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-15 Thread Jiri Denemark
On Fri, Nov 15, 2019 at 15:55:04 +0100, Christian Borntraeger wrote: > > > On 15.11.19 15:47, Jiri Denemark wrote: > > On Fri, Nov 15, 2019 at 15:12:18 +0100, Boris Fiuczynski wrote: > >> Just a heads up. > >> After installing libvirt rpms of this branch all my existing kvm s390 > >> domains end

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-15 Thread Christian Borntraeger
On 15.11.19 15:47, Jiri Denemark wrote: > On Fri, Nov 15, 2019 at 15:12:18 +0100, Boris Fiuczynski wrote: >> Just a heads up. >> After installing libvirt rpms of this branch all my existing kvm s390 >> domains ended up with >> >> >> qemu >> >> >> Newly defined domains without speci

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-15 Thread Jiri Denemark
On Fri, Nov 15, 2019 at 15:12:18 +0100, Boris Fiuczynski wrote: > Just a heads up. > After installing libvirt rpms of this branch all my existing kvm s390 > domains ended up with > > > qemu > > > Newly defined domains without specified cpu do so as well. Unless the domains are all

Re: [libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-15 Thread Boris Fiuczynski
Just a heads up. After installing libvirt rpms of this branch all my existing kvm s390 domains ended up with qemu Newly defined domains without specified cpu do so as well. On 11/14/19 4:44 PM, Jiri Denemark wrote: On s390 machines host-passthrough and host-model CPUs result in th

[libvirt] [PATCH 0/4] qemu: Use host-model CPU on s390 by default

2019-11-14 Thread Jiri Denemark
On s390 machines host-passthrough and host-model CPUs result in the same guest ABI (with QEMU new enough to be able to tell us what "host" CPU is expanded to, which was implemented around 2.9.0). So instead of using host-passthrough CPU when there's no CPU specified in a domain XML we can safely us