Re: [Qemu-devel] [PATCH] target-i386: add a list of enforceable CPU models to the help output

[Eduardo Habkost]

On Mon, Aug 24, 2015 at 09:36:23PM +0200, Peter Lieven wrote:
> Am 24.08.2015 um 17:46 schrieb Eric Blake:
> > On 08/24/2015 03:17 AM, Peter Lieven wrote:
> >> this patch adds a probe that lists all enforceable and migrateable
> >> CPU models to the -cpu help output. The idea is to know a priory
> >> which CPU modules can be exposed to the user without loosing any
> >> feature flags.
> >>
> >> Signed-off-by: Peter Lieven <address@hidden>
> >> ---
> >>  target-i386/cpu.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
> >>  1 file changed, 49 insertions(+)
> > Is this same sort of listing available through QMP? Parsing '-cpu help'
> > output is undesirable from libvirt point of view.
> >
> 
> A good point. But is there a QMP command to list available CPU types?
> In this case it should be easy to extend.

Yes, that's query-cpu-definitions. See past discussion at:
http://thread.gmane.org/gmane.comp.emulators.qemu/332554

Some of the assumptions at that thread changed. See:
http://thread.gmane.org/gmane.comp.emulators.qemu/342582/focus=346651
That means runnability should depend only on the accelerator type, and
not on the machine-type anymore.

> 
> But, I wonder how to issue a QMP command before the vserver is actually
> running? Is there a common way to do it?

What's a vserver?

-- 
Eduardo