On Mon, Oct 31, 2016 at 06:41:23AM +0000, Liu Pedroa wrote: > Hi Everyone. > > > I have a sample question. As the subset description. > > > Guest OS : Ubuntu OS > > QEMU : linux kernel 4.8 > > > so i want the virtual client OS can communication( can send and receive > messages through serial device) with Guest OS. what should i do?
Add a chardev to your QEMU command-line (try -serial unix:/tmp/test.sock,server,nowait). Read the qemu(1) man page for details on chardevs and all the options. Inside the guest you need to access the serial port (e.g. /dev/ttyS0 on Linux but make sure no login tty is running on that port). On the host you can access the UNIX domain socket given on your QEMU command-line. That would be /tmp/test.sock in this example. Also consider using virtio-serial instead of the traditional ISA serial device. It allows you to add/remove named (e.g. org.myproject.agent.0) ports at run-time. Search online to find example syntax. Stefan
signature.asc
Description: PGP signature
