Re: [Qemu-devel] [PATCH v3] vl.c: Support multiple CPU ranges on -numa option

[Eduardo Habkost]

On Thu, Jun 20, 2013 at 11:52:42AM +0200, Paolo Bonzini wrote:
> Il 20/06/2013 11:30, Igor Mammedov ha scritto:
> >>>> > > > So, basically the format seemed easier to work with if we are 
> >>>> > > > thinking 
> >>>> > > > of using QemuOpts for -numa. Using -cpu rather than cpus probably
> >>>> > > > makes it less ambiguous as well IMO. However, it's probably not a 
> >>>> > > > good idea
> >>>> > > > if the current syntax is well established ?
> >> > 
> >> > libvirt uses the "cpus" option already, so we have to keep it working.
> > Sure, we can leave it as it's now for some time while a new interface is
> > introduced/adopted. And than later deprecate "cpus".
> 
> So, you used a new name because the new behavior of "-numa
> node,cpus=1-2,cpus=3-4" would be incompatible with the old.

I don't think anybody uses "cpus=1-2,cpus=3-4" today, so I believe we
can change its behavior. The problem was to get agreement on the syntax
to represent multiple CPU ranges.

> 
> Personally I don't think that's a problem, but I remember a long
> discussion in the past.  Igor/Eduardo, do you remember the conclusions?

I don't remember seeing the discussion reach any conclusion,
unfortunately.

-- 
Eduardo