From: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
To: Yuehai Xu <yuehaixu@gmail.com>
Cc: xen-devel@lists.xensource.com, yhxu@wayne.edu
Subject: Re: Can anyone successfully use serial console to debug XEN-4.0.1-rc6?
Date: Tue, 21 Sep 2010 11:37:39 -0400 [thread overview]
Message-ID: <20100921153739.GA21137@dumpdata.com> (raw)
In-Reply-To: <AANLkTikhNO65cEZryD2aWNwaxzz+9oO0st4n0AZ7TZQn@mail.gmail.com>
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.
next prev parent reply other threads:[~2010-09-21 15:37 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-21 15:23 Can anyone successfully use serial console to debug XEN-4.0.1-rc6? Yuehai Xu
2010-09-21 15:37 ` Konrad Rzeszutek Wilk [this message]
2010-09-21 15:57 ` Yuehai Xu
2010-09-21 16:09 ` Pasi Kärkkäinen
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