From: Peter Maydell <peter.maydell@linaro.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael Mueller" <mimu@linux.vnet.ibm.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
"QEMU Developers" <qemu-devel@nongnu.org>,
"Alexander Graf" <agraf@suse.de>,
"Christian Borntraeger" <borntraeger@de.ibm.com>,
"Igor Mammedov" <imammedo@redhat.com>,
"Jiri Denemark" <jdenemar@redhat.com>,
"Richard Henderson" <rth@twiddle.net>,
"Andreas Färber" <afaerber@suse.de>,
"Eduardo Habkost" <ehabkost@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models
Date: Wed, 24 Jun 2015 15:54:55 +0100 [thread overview]
Message-ID: <CAFEAcA--PKZxMJGs4dmR3d2wi6b4VDHRi33WzRJpAxOP+N9gmw@mail.gmail.com> (raw)
In-Reply-To: <558AC0FB.6090608@redhat.com>
On 24 June 2015 at 15:38, Paolo Bonzini <pbonzini@redhat.com> wrote:
> It's certainly okay for libvirt and OpenStack to use the host CPU
> features in order to check whether a node will run a given VM. However,
> libvirt should trust that QEMU developers will not prevent a VM from
> running on a previously viable host, just because you change the machine
> type.
Note that this might be true for x86 but isn't (in full generality)
necessarily so for other architectures like ARM. For instance if
you have a host machine with a GICv3 with no v2-back-compatibility
support, then you can run a VM whose machine type specifies a GICv3,
but not machine types that require a GICv2...
thanks
-- PMM
next prev parent reply other threads:[~2015-06-24 14:55 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-08 19:07 [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models Eduardo Habkost
2015-06-08 19:07 ` [Qemu-devel] [PATCH 1/2] target-i386: Introduce "-cpu custom" Eduardo Habkost
2015-06-08 19:07 ` [Qemu-devel] [PATCH 2/2] scripts: x86-cpu-model-dump script Eduardo Habkost
2015-06-08 20:18 ` [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models Jiri Denemark
2015-06-09 8:56 ` Daniel P. Berrange
2015-06-09 13:16 ` Eduardo Habkost
2015-06-23 12:32 ` Andreas Färber
2015-06-23 15:08 ` Eduardo Habkost
2015-06-23 15:32 ` Michael S. Tsirkin
2015-06-23 15:58 ` Eduardo Habkost
2015-06-23 16:15 ` Andreas Färber
2015-06-23 16:25 ` Daniel P. Berrange
2015-06-23 16:33 ` Michael S. Tsirkin
2015-06-23 16:38 ` Eduardo Habkost
2015-06-23 16:44 ` Andreas Färber
2015-06-23 17:08 ` Eduardo Habkost
2015-06-23 17:18 ` Andreas Färber
2015-06-23 17:27 ` Daniel P. Berrange
2015-06-23 17:41 ` Andreas Färber
2015-06-23 17:45 ` Eduardo Habkost
2015-06-23 17:58 ` Andreas Färber
2015-06-23 18:05 ` Daniel P. Berrange
2015-06-23 18:11 ` Eduardo Habkost
2015-06-23 17:55 ` Daniel P. Berrange
2015-06-23 17:39 ` Eduardo Habkost
2015-06-23 18:35 ` Andreas Färber
2015-06-23 19:25 ` Eduardo Habkost
2015-06-23 19:41 ` Andreas Färber
2015-06-23 19:53 ` Eduardo Habkost
2015-06-23 20:26 ` Eduardo Habkost
2015-06-23 21:38 ` Michael S. Tsirkin
2015-06-23 16:42 ` Daniel P. Berrange
2015-06-23 16:47 ` Andreas Färber
2015-06-23 17:11 ` Eduardo Habkost
2015-06-23 21:34 ` Michael S. Tsirkin
2015-06-24 14:24 ` Eduardo Habkost
2015-06-24 14:37 ` Michael S. Tsirkin
2015-06-24 15:44 ` [Qemu-devel] Not introducing new host-side requirements on new machine-type versions (was Re: [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models) Eduardo Habkost
2015-06-24 15:58 ` Andreas Färber
2015-06-24 16:08 ` Eduardo Habkost
2015-06-24 16:15 ` Andreas Färber
2015-06-24 15:59 ` Paolo Bonzini
2015-06-23 17:13 ` [Qemu-devel] [PATCH 0/2] target-i386: "custom" CPU model + script to dump existing CPU models Daniel P. Berrange
2015-06-23 17:29 ` Andreas Färber
2015-06-23 17:42 ` Eduardo Habkost
2015-06-23 17:55 ` Andreas Färber
2015-06-23 17:58 ` Daniel P. Berrange
2015-06-23 21:28 ` Michael S. Tsirkin
2015-06-24 14:18 ` Eduardo Habkost
2015-06-24 14:24 ` Michael S. Tsirkin
2015-06-23 21:26 ` Michael S. Tsirkin
2015-06-23 21:23 ` Michael S. Tsirkin
2015-06-24 8:52 ` Daniel P. Berrange
2015-06-24 10:31 ` Michael S. Tsirkin
2015-06-24 14:16 ` Eduardo Habkost
2015-06-24 14:19 ` Michael S. Tsirkin
2015-06-24 14:35 ` Andreas Färber
2015-06-24 14:57 ` Michael S. Tsirkin
2015-06-24 15:43 ` Andreas Färber
2015-06-24 14:38 ` Paolo Bonzini
2015-06-24 14:54 ` Peter Maydell [this message]
2015-06-24 14:56 ` Paolo Bonzini
2015-06-24 15:58 ` Eduardo Habkost
2015-06-24 16:00 ` Paolo Bonzini
2015-06-23 16:40 ` Andreas Färber
2015-06-23 16:53 ` Daniel P. Berrange
2015-06-23 17:10 ` Andreas Färber
2015-06-23 17:24 ` Eduardo Habkost
2015-06-23 17:31 ` Daniel P. Berrange
2015-06-23 16:32 ` Eduardo Habkost
2015-06-23 17:01 ` Andreas Färber
2015-06-23 15:51 ` Daniel P. Berrange
2015-06-23 15:56 ` Michael S. Tsirkin
2015-06-23 16:00 ` Daniel P. Berrange
2015-06-23 16:30 ` Michael S. Tsirkin
2015-06-24 9:20 ` Jiri Denemark
2015-06-24 10:21 ` Michael S. Tsirkin
2015-06-24 10:31 ` Daniel P. Berrange
2015-06-24 10:40 ` Michael S. Tsirkin
2015-06-24 10:32 ` Paolo Bonzini
2015-06-16 17:40 ` Eduardo Habkost
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