using com2 from dom 0 ....

using com2 from dom 0 ....

[Himanshu Raj]

Hi Folks,

Is there a way to attach xenconsole to ttyS0 in dom0 as usual and still be able
to use ttyS1 (com port 2) from linux. I simply tried to use the 8250 driver,
but loading that module fails. I don't want to use xenconsole=tty since I access
this machine via serial console from other machine.

Best,
Himanshu
-- 
-------------------------------------------------------------------------
Himanshu Raj
PhD Student, GaTech (www.cc.gatech.edu/~rhim)
I prefer to receive attachments in an open, non-proprietary format.
-------------------------------------------------------------------------

Re: using com2 from dom 0 ....

[Keir Fraser]

On 13 Sep 2005, at 16:45, Himanshu Raj wrote:

> Is there a way to attach xenconsole to ttyS0 in dom0 as usual and 
> still be able
> to use ttyS1 (com port 2) from linux. I simply tried to use the 8250 
> driver,
> but loading that module fails. I don't want to use xenconsole=tty 
> since I access
> this machine via serial console from other machine.

I doubt it, since the native serial driver expects to grab both ports 
and will fail completely if it fails on either one. What is wrong with 
binding to tty instead? It's just a name -- the I/O will still go thru 
com1 in Xen.

  -- Keir

Re: using com2 from dom 0 ....

[Himanshu Raj]

I need to use minicom in dom0 to connect to a device connected at serial port
1. I also wanted to be able to switch back and forth between xen and dom0 console,
hence I liked the console connected to serial port 0.

-Himanshu
On Tue, Sep 13, 2005 at 06:42:13PM +0100, Keir Fraser wrote:
> 
> On 13 Sep 2005, at 16:45, Himanshu Raj wrote:
> 
> >Is there a way to attach xenconsole to ttyS0 in dom0 as usual and 
> >still be able
> >to use ttyS1 (com port 2) from linux. I simply tried to use the 8250 
> >driver,
> >but loading that module fails. I don't want to use xenconsole=tty 
> >since I access
> >this machine via serial console from other machine.
> 
> I doubt it, since the native serial driver expects to grab both ports 
> and will fail completely if it fails on either one. What is wrong with 
> binding to tty instead? It's just a name -- the I/O will still go thru 
> com1 in Xen.
> 
>  -- Keir

-- 
-------------------------------------------------------------------------
Himanshu Raj
PhD Student, GaTech (www.cc.gatech.edu/~rhim)
I prefer to receive attachments in an open, non-proprietary format.
-------------------------------------------------------------------------

RE: using com2 from dom 0 ....

[Ian Pratt]

> Is there a way to attach xenconsole to ttyS0 in dom0 as usual 
> and still be able to use ttyS1 (com port 2) from linux. I 
> simply tried to use the 8250 driver, but loading that module 
> fails. I don't want to use xenconsole=tty since I access this 
> machine via serial console from other machine.

Only in -unstable/3.0

Ian