To achieve this, it mean QEMU will transfer serial port data write from
guest to physical one, and also read data received through real physical
serial port and transfer received data to guest.

You can use qemu option "serial",  set serial=/dev/ttyS0 to acheive that
. But I remember that code had some defect before and not sure current
status.

Thanks
Yunhong Jiang

Dong, Eddie <> wrote:
> [EMAIL PROTECTED] wrote:
>> Thanks. But I cannot use that since I am going to debug drivers
>> running on Windows and qemu does not expose the real hardware to
guest.
>> 
>> So, here is another question, is there any plan to make qemu transfer
the
>> real hardware to guest? 
>> 
> 
> I guess you are talking about serial port assignment which is another
story.
> 
> Pass-through devices support is for PCI device only. For
> leagcy serial port,
> you don't need device assignment, I remember Yunhong Jiang
> ever posted a
> patch in Xen side to support Windows kernel debug. Basically you can
> direct vSerial port input/output to physical serial port
> easily in Qemu, but
> there are binary data format conversion tricky there if I
> remember correctly.
> 
> CC yunhong here.
> Eddie

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