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

["Neo Jia" <neojia@xxxxxxxxx>]

I will try that tomorrow. This should work even I don't see any tty in
dom0 dmesg?

Thanks,
Neo

2008/6/20 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
>



-- 
I would remember that if researchers were not ambitious
probably today we haven't the technology we are using!

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