Re: [Qemu-devel] [qemu-s390x] [PATCH v1 3/5] s390-ccw: parse and set boot menu options

[Cornelia Huck <cohuck@redhat.com>]

On Thu, 30 Nov 2017 16:52:37 +0100
David Hildenbrand <david@redhat.com> wrote:

> On 29.11.2017 23:33, Collin L. Walling wrote:
> > On 11/29/2017 05:28 PM, David Hildenbrand wrote:  
> >> On 27.11.2017 21:55, Collin L. Walling wrote:  
> >>> Set boot menu options for an s390 guest and store them in
> >>> the iplb. These options are set via the QEMU command line
> >>> option:
> >>>
> >>>      -boot menu=on|off[,splash-time=X]
> >>>
> >>> or via the libvirt domain xml:
> >>>
> >>>      <os>
> >>>        <bootmenu enable='yes|no' timeout='X'/>
> >>>      </os>
> >>>
> >>> Where X represents some positive integer representing
> >>> milliseconds.  
> >> Aren't this properties usually contained in the zIPL block? (e.g.
> >> written and configured by zipl)
> >>  
> > I believe the timeout value is nestled in there somewhere, yes.
> > However it was requested that we control the boot menu timeout value
> > via the Qemu command line instead. :)
> >   
> 
> Wonder if it makes sense to always act like the zIPL loader (display
> menu/timeout) but allow to overwrite it via cmd line.
> 

I think that make quite a bit of sense.