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xen-devel
Re: [Xen-devel] Can anyone successfully use serial console to debug XEN-
On Tue, Sep 21, 2010 at 11:37:39AM -0400, Konrad Rzeszutek Wilk wrote:
> 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.
>
It's here:
http://wiki.xensource.com/xenwiki/XenSerialConsole
-- Pasi
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