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xen-devel
Re: [Xen-devel] Can anyone successfully use serial console to debug XEN-
On Tue, Sep 21, 2010 at 11:23:01AM -0400, Yuehai Xu wrote:
> Hi,
>
> I set my grub to use serial console:
>
> ...
> kernel /boot/xen.gz dom0_mem=1024m console=com1 com1=115200,8n1
That should work. It works for me.
> ...
>
> But I failed to get anything output from XEN. On the other hand, I can
What is your serial device? Is it a PCI card or is it built in?
> get the output from kernel of Dom0 by this way:
>
> ...
> module /boot/vmlinuz-2.6.31.13 ro root=LABEL=/1 maxcpus=1
> console=ttyS0,115200n8
> ...
>
> So, should anything special parameters be configured in order to get
> the output of XEN?
Not if it is a normal built-in serial device. If it is a PCI(or PCI-e or Mini
PCI-e)
then you have to fiddle a bit to find its ioport. It is discussed in detail on
the Wiki -
search PVOPS Wiki and then for the Serial Xen troubleshooting one - Mr. Pasi
made sure
to include a wealth of details on how to work this out.
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