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

["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!

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