Problems with serial console

[Juergen Gross <juergen.gross@ts.fujitsu.com>]

Hi,

I'm trying to investigate the dom0 early boot hang on my 4-core Nehalem
system. Up to now I have not been able to get any keypress via the serial
line into the hypervisor.

With xen 3.3.1 everything (serial in- and output) works with the following xen
parameters:

kernel /boot/xen.gz console=com1 com1=38400 sync_console debug=yes loglvl=all
guest_loglvl=all crashkernel=256M@16M

With xen-unstable and the following parameters only the xen messages are seen
via the serial line, input is not possible:

kernel /boot/xen.gz console=com1 com1=38400 sync_console debug=yes loglvl=all
guest_loglvl=all crashkernel=256M-:128M@16M

What could be the reason? Any idea what I could try?


Juergen

-- 
Juergen Gross                 Principal Developer Operating Systems
TSP ES&S SWE OS6                       Telephone: +49 (0) 89 3222 2967
Fujitsu Technolgy Solutions               e-mail: juergen.gross@ts.fujitsu.com
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