Re: [Qemu-devel] [PATCH] vl: verify if combination of cpus, sockets, cores and threads is sane

[Peter Lieven]

On 22.11.2013 11:16, Paolo Bonzini wrote:
> Il 21/11/2013 15:37, Peter Lieven ha scritto:
> > -        max_cpus = qemu_opt_get_number(opts, "maxcpus", 0);
> > +        if (cpus != sockets * cores * threads) {
> > +            fprintf(stderr, "Illegal CPU layout: %d cpus with %d sockets,"
> > +                            " %d cores per socket and %d threads per core"
> > +                            " (cpus != sockets * cores * threads)\n",
> > +                            cpus, sockets, cores, threads);
> > +            exit(1);
> > +        }
> Should max_cpus be checked instead if non-zero?
>
> I see where you come from, but I think the potential for this patch to
> break some working configuration (for some definition of working) is too
> high.  Can you split out the fixes to the "fill in the blanks" logic?
I can, but the number of sockets is logal to the parse function.

What would you think is it okay to just send a warning about
the illegal config and drop the exit(1).

Peter