Hello Ian
> > I tried without unload the 8250 driver and starting the domU resuted
> > in an IRQ 4 error.
>
> So what you really need is to inhibit the 8250 driver from claiming the
> ports/irqs associated with the serial points. I don't think you need to
> inhibit the driver loading to do this.
>
> I see /sys/bus/platform/drivers/serial8250/{un,}bind on my systems, so
> it's perhaps possible that you can also control this stuff even more
> dynamically on a per-port basis too.
Thanks a lot-lot for the hint!
I was indeed able to unbind the driver from the port with the following command:
echo -n "serial8250" > /sys/bus/platform/drivers/serial8250/unbind
And domU could be started with serial access!
The subject can also be closed.
Cheers
David
>
> Ian.
