Re: [Qemu-discuss] Fwd: Writing to guest serial port from the host.

[Mike Lovell]

On 02/14/2012 06:11 AM, Дмитрий Корищенко wrote:
> Hello everyone!
> I have a problem:
> for development purposes i want to map some kind of file or maybe host 
> system serial port to guest serial port.
> For example, mapping host serial port to guest serial port - if i 
> write something to host serial port, all data appears on guest serial 
> port. And vice versa. That means some kind of bidirectional mapping 
> between guest and host serials.
> Is this can be achieved with QEMU?
> I'm using qemu-system-arm for emulating angstrom linux for gumstix 
> overo boards.

try adding '-serial /dev/ttyS0' to your invocation of qemu, replacing 
ttyS0 with whatever host serial port you want to use. you should be able 
to then use a serial device in the guest that maps to the one specified 
on the host. i haven't tried this myself but it is listed in the man page.

mike