Re: [qemu-s390x] [Qemu-devel] [PATCH] hw/s390x: Fix the function arguments in the pci stub file

[Cornelia Huck]

On Fri, 1 Feb 2019 09:23:56 +0100
Cornelia Huck <address@hidden> wrote:

> On Fri, 1 Feb 2019 07:46:40 +0100
> Thomas Huth <address@hidden> wrote:

> > So I see two options now:
> > 
> > 1) Finally really make the device optional, at least for new machine
> > types, so we can really disable CONFIG_PCI and get a working executable.
> > 
> > 2) Scratch the idea completely to make this optional, always link the
> > s390-pci-bus.o and s390-pci-inst.o files unconditionally, and remove the
> > s390-pci-stub.c file.
> > 
> > I assume options 2 is preferred, since we likely rather want to move
> > into the PCI direction in the long run, instead of ignoring it...  
> 
> I think both options are viable, but option 1 is of course more work.
> The win there is that we could disable an entire subsystem.
> 
> I guess that the basic questions are: How important is it that
> subsystems can be compiled out, and do we see a use case for a pci-less
> s390 machine in the future? We really don't want to spend much time on
> something of dubious use...

Any thoughts on this?

I'm currently tending towards option 2 (and can cook up a patch for
that). Unless someone is already working on option 1 :)

Of course, I can also apply the original patch, but the end result is
not very useful...