This may seem like an obvious point, but when you enable VGA or PCI
passthrough, you are not *sharing* these devices between dom0 and domU,
the devices are taken away from dom0 and assigned *exclusively* to domU.
This means that, once you assign your VGA card to your domU, you will
no longer be able to use the console to log in to dom0. Also, if your
machine has a single network interface card, and you assign that to your
domU, your dom0 will no longer be able to use the network card and you
will lose access to it. PCI devices may only be assigned to one dom, so
you need to choose your configuration correctly.
I pass my VGA and USB controllers through to my domU, and use the
serial port for direct physical access to my dom0. The network card
remains in dom0, and I used network bridging to run network connections
from my domU and maintain network connectivity for dom0.
-Nick
>>> On 2010/05/08 at 05:32, 王俊仁<ben3468.wang@xxxxxxxxx> wrote:
> Hello
> I am new in XEN and Linux. I am trying the VGA passthru. I can
> xen-pciback.hide EtherNet, Serial Com port. But when I
xen-pciback.hide my
> VGA. I can no longer login to the Linux(Fedora 12).
> Then how can I xm create a XP DomU guest? Can anyone help?
>
> I am using Intel Q35 MB with Intel Core2 CPU.
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