Re: [Xen-users] Serial port problem

[Kun Hong <khong@xxxxxxxxxxx>]

Ian Pratt wrote:
>  
>
> > I am using Xen in FC4. I can't use my serial port in dom0.
> > I didn't use serial port in Xen's boot command. I wonder what 
> > can be wrong. It can't be hardware problem. I can use serial 
> > port when booting without Xen. And I tried the 2.6.12 kernel 
> > and Xen3. It is the same.
>
> Please post the boot messages. 'xm dmesg' and 'dmesg' should be OK.
>
> Why do you want to drive the serial port directly from dom0 rather than
> via Xen? Are you connecting a modem or some other gadget?
>
> Are you sure your kernel has the appropriate uart driver? Is the port
> detected in the boot messages? Does xencons appear to be grabbing ttyS0
> regardless?
>
> (You could try xencons=off on the kernel command line)

I got it...
Sorry I didn't understand in the beginning. (I don't have serial
driver in dom0 Linux kernel and the boot setting is not correct)

Now it works prefectly after I install serial driver and set the
xencons=off at module line.

But I still don't know how to use ttyS0 via xen. In xen boot command
line I have to set the baud rate and DSP. What if I need to change it
when I use it in XenLinux ? (Use ttyS0 to talk to settop box, robots, etc).

Kun

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