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Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt
From: |
Eduardo Habkost |
Subject: |
Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt |
Date: |
Thu, 22 Mar 2012 14:14:45 -0300 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Thu, Mar 22, 2012 at 11:37:39AM -0500, Anthony Liguori wrote:
> On 03/22/2012 04:32 AM, Gleb Natapov wrote:
> >On Tue, Mar 13, 2012 at 11:53:19AM -0300, Eduardo Habkost wrote:
> >>So, this problem is solved if the defaults are easily found on
> >>/usr/share.
> >>
> >What problem is solved and why are we mixing machine configuration files
> >and cpu configuration files? They are different and should be treated
> >differently. -nodefconfig exists only because there is not machine
> >configuration files currently. With machine configuration files
> >libvirt does not need -nodefconfig because it can create its own machine
> >file and make QEMU use it. So specifying machine file on QEMU's command
> >line implies -nodefconfig. The option itself loses its meaning and can be
> >dropped.
>
> No, -nodefconfig means "no default config".
>
> As with many projects, we can have *some* configuration required.
>
> The default configure should have a:
>
> [system]
> address@hidden@/cpu-models-x86_64.cfg
Not @SYSCONFDIR@, but @address@hidden CPU models belong to /usr/share because
they aren't meant to be changed by the user (I think I already explained
why: because we have to be able to deploy fixes to them).
>
> Stanza by default. If libvirt wants to reuse this, they can use
> -readconfig if they use -nodefconfig.
You are just repeating how you believe it should work based on the
premise that "cpudefs are configuration". We're discussing/questioning
this exact premise, here, and I would really appreciate to hear why the
model Gleb is proposing is not valid.
More precisely, this part:
> >cpu-models-x86.conf is not a configuration file. It is hardware
> >description file. QEMU should not lose capability just because you run
> >it with -nodefconfig. -nodefconfig means that QEMU does not create
> >machine for you, but all parts needed to create a machine that would have
> >been created without -nodefconfig are still present. Not been able to
> >create Nehalem CPU after specifying -nodefconfig is the same as not been
> >able to create virtio-net i.e the bug.
And the related points Gleb mentioned further in this thread.
--
Eduardo
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, (continued)
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/12
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/13
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Eduardo Habkost, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt,
Eduardo Habkost <=
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/22
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Gleb Natapov, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Anthony Liguori, 2012/03/25
- Re: [Qemu-devel] [libvirt] Modern CPU models cannot be used with libvirt, Avi Kivity, 2012/03/25