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Re: [Qemu-devel] Displaying serial terminals on qemu

From: Serge E. Hallyn
Subject: Re: [Qemu-devel] Displaying serial terminals on qemu
Date: Tue, 7 Dec 2010 00:59:52 +0000
User-agent: Mutt/1.5.20 (2009-06-14)

Quoting Stevens, Weston (address@hidden):
> I run Ubuntu 10.04 LTS and have qemu 0.12.3. For a class project, we are 
> building our own pseudo-linux operating system, so we have our own kernel AND 
> user processes that we built, and we run this OS from a virtual floppy disk. 
> So we don't borrow anything from the Ubuntu host OS like the login, init, sh, 
> etc process images, just the ones we wrote ourselves that exist on the 
> floppy's file system.
> I'd like to configure qemu to not just display tty0, but ALSO display virtual 
> serial terminals ttyS0 and ttyS1. Then I will run an instance of the login 
> process that I wrote on each of them and go from there. Help appreciated!

IIUC you'll want to use the -serial option.  I.e. 

        kvm -serial stdio ... image.img

Will give you ttyS0 in the terminal from which you called kvm.  Or, you can

        kvm -serial tcp:localhost:2222,server ... image.img

and then

        telnet localhost 2222

from another terminal, to get serial port redirected through telnet.


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