Re: [Xen-users] Max number of serial ports in dom0?

[Tom Horsley <tom.horsley@xxxxxxx>]

On Thu, 24 Apr 2008 16:10:07 +0200
Arjen Roodselaar <xen@xxxxxxxxxx> wrote:

> I there a limit on the  
> amount of usable serial ports in a dom0?

Perhaps this bugzilla is relevant:

https://bugzilla.redhat.com/show_bug.cgi?id=204825

I always found that the only way I could get more than 4 serial
ports to work is by adding the kernel boot parameter:

8250.nr_uarts=9

Perhaps you have that kernel parameter and that's why you get
all your serial ports in the non-xen kernel, but in the xen kernel,
the 8250 driver is a module, so you'd need a modprobe.conf
options line to pass the nr_uarts parameter to the module.

Just my guess :-).

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