Re: [Xen-devel] How to enable serial driver on 2.6.18 for Intel DQ35JO?

["Jean Guyader" <jean.guyader@xxxxxxxxx>]

Neo,

You should try in your config file:

serial="/dev/ttyS0"

2008/6/20 Neo Jia <neojia@xxxxxxxxx>:
> I need to pass through (not VT-d) the real serial port to the DomU and
> debug it with kgdb. And I even can't see anything in my dmesg | grep
> tty, which is executed in dom0.
>
> I just compared the linux-xen config file for x86_64 and x86_32. It
> looks that we disable the serial 8250 driver on x86_64 machine.
>
> Thanks,
> Neo
>
>
>
> On Fri, Jun 20, 2008 at 1:41 AM, Grzegorz Miłoś <gm281@xxxxxxxxx> wrote:
>>> I need to use the onboard serial port to debug DomU. But I can't see
>>> it from the dmesg | grep tty output.
>>
>> Serial port is (usually) assigned to Xen + Dom0. You can however use
>> xencons to debug your DomU.
>> Gerd Hoffman's XenSummit presentation is a good resource to learn about 
>> xencons:
>> http://xen.xensource.com/files/xensummit_4/xensummit_linux_console_slides.pdf
>>
>> In my DomU config files I have:
>> extra = "console=xvc0 xencons=xvc"
>> This should be enough to get you started.
>>
>> Cheers
>> Gr(z)egor(z)
>>
>>>
>>> Is there anybody can use this board to debug DomU?
>>>
>>> Thanks,
>>> Neo
>>> --
>>> I would remember that if researchers were not ambitious
>>> probably today we haven't the technology we are using!
>>>
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-devel
>>>
>>
>
>
>
> --
> I would remember that if researchers were not ambitious
> probably today we haven't the technology we are using!
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-devel
>
>



-- 
Jean Guyader

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