[Xen-users] Serial port access from DomU

["David Müller (ELSOFT AG)" <d.mueller@xxxxxxxxx>]

Hello

I would like to have access to the 4 serial ports (16550 based hardware,
no USB dongles) of the host system from a DomU.

I followed the steps mentioned in the Xen Wiki
(http://wiki.xensource.com/xenwiki/InstallationNotes#head-327388b324997719e864f8740fed06036c799e38),
but

I tried Debian Etch (Xen-3.0.3, linux-2.6.18-6-xen-686 in Dom0 and DomU)
and Debian Lenny (Xen-3.2, linux-2.6.18-6-xen-686 in Dom0 and
linux-2.6.18-6-xen-686 or linux-2.6.26-1-xen-686 in DomU)

The devices nodes "ttyS[0-3]" are present and i can start minicom using
them, but no characters are transmitted or received.

The "xen-tools.conf" file on Debian Lenny mentions that newer version of
the Xen guest kernel will use "xvc[0-9]" for the guest serial device,
but no "xvc" device nodes are present when running
linux-2.6.26-1-xen-686 in DomU.

Any ideas what's going wrong?


Dave

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