Re: [Qemu-devel] [PATCH v4] s390: diagnose 318 info reset and migration support

[Cornelia Huck]

On Tue, 14 May 2019 11:07:41 +0200
Christian Borntraeger <address@hidden> wrote:

> On 14.05.19 10:59, David Hildenbrand wrote:

> > We can
> > 
> > 1. Fail to start with #cpus > 240 when diag318=on
> > 2. Remove the error once we support more than one SCLP response page
> > 
> > Or
> > 
> > 1. Allow to start with #cpus > 240 when diag318=on, but indicate only
> >    240 CPUs via SCLP
> > 2. Print a warning
> > 3. Remove the restriction and the warning once we support more than one
> >    SCLP response page

We'd need compat handling for step 3., then?

> > 
> > While I prefer the second approach (similar to defining zPCI devices
> > without zpci=on), I could also live with the first approach.  
> 
> Lets just continue with your other suggestion to simply limit the sclp 
> response and do not do any failure or machine change. That  seems like
> the easiest solution.

That's the second option, right? Should be reasonable.