Re: [PATCH 1/4] microvm: make number of virtio transports runtime configurable

[Gerd Hoffmann]

  Hi,

> > +    mms->virtio_irq_base = 5;
> > +    mms->virtio_num_transports = 8;
> > +    if (x86_machine_is_acpi_enabled(x86ms)) {
> > +        mms->virtio_irq_base = 16;
> > +    }
> 
> can we unify and use the same base in both cases?

Well, without ACPI the IO-APIC detection seems to not work reliable,
which in turn makes using IRQs 16+ problematic because the classic PIC
can't handle those ...

take care,
  Gerd