[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt
From: |
Daniel P. Berrange |
Subject: |
Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt |
Date: |
Thu, 15 Dec 2011 15:42:44 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Dec 15, 2011 at 03:54:15PM +0100, Jiri Denemark wrote:
> Hi,
>
> Recently I realized that all modern CPU models defined in
> /etc/qemu/target-x86_64.conf are useless when qemu is used through libvirt.
> That's because we start qemu with -nodefconfig which results in qemu ignoring
> that file with CPU model definitions. We have a very good reason for using
> -nodefconfig because we need to control the ABI presented to a guest OS and we
> don't want any configuration file that can contain lots of things including
> device definitions to be read by qemu. However, we would really like the new
> CPU models to be understood by qemu even if used through libvirt. What would
> be the best way to solve this?
Ideally libvirt would just write out a config file with the CPU
that was configured in libvirt and pass -readconfig
/var/lib/libvirt/qemu/guestcpu.conf
That way libvirt can configure CPU models without regard for
what the particular QEMU version might have in its config.
Daniel
--
|: http://berrange.com -o- http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org -o- http://virt-manager.org :|
|: http://autobuild.org -o- http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org -o- http://live.gnome.org/gtk-vnc :|