Jimmy Jin wrote:
> Hello, Randy,
>
> Thank you very much for your reply.
>
> Just like to double confirm my understanding.
>
> In my case the lspci -t -v output is like following:
>
> -[0000:00]-+-00.0 Intel Corporation Memory Controller Hub
> +-01.0-[0000:80]--
> +-03.0-[0000:a0]--
> +-05.0-[0000:60]----00.0 nVidia Corporation Quadro NVS 290
>
>
>
> +-09.0-[0000:10-40]--+-00.0-[0000:1e-40]--+-00.0-[0000:20]-- |
> | \-01.0-[0000:40]-- |
> \-00.3-[0000:11]--+-06.0 LSI Logic /
> Symbios Logic SAS1068 PCI-X Fusion-MPT SAS
> | \-09.0 ADMtek NC100
> Network Everywhere Fast Ethernet 10/100
> ...
>
> I'm trying to pass through the ADMtek NC100 NIC to RHEL 3.7 HVM domU.
> So according to your explanation, I must also pass the LSI Logic SAS
> controller to the same domU, right? Otherwise the problem I
> encountered with the SAS controller will occur, right?
yes, you should assign all the devices under the same PCIe-to-PCI bridge
to the same domain.
Randy (Weidong)
>
> If it's correct, it seems the only solution on this workstation is to
> have SATA HD instead of SAS. :-(
>
> Thanks,
> Jimmy Jin
>
> On Wed, May 28, 2008 at 3:17 PM, Han, Weidong <weidong.han@xxxxxxxxx>
> wrote:
>> Hi Jimmy,
>>
>> All devices behind PCIe-to-PCI bridge has to be assigned to the same
>> domain.
>>
>> Supporting nested PCI bridge is a little bit complicated, and even
>> infeasible in some cases. I think it makes a little sense. It is
>> meaningful to make an interface for users to know which devices are
>> assignable with VT-d, and hint them to assign correctly.
>>
>> Randy (Weidong)
>>
>>
>> Jimmy Jin wrote:
>>> Hi,
>>>
>>> Is there a plan to enable the nested PCI bridge support of VT-d?
>>> Currently, if there is nested PCI bridge, a message will shown
>>> saying it's not supported. And if passing the card on the slot on a
>>> nested PCI bridge, it seems some unexpected problem may occur.
>>>
>>> I encounter this case when trying to pass through a PCI card to a
>>> RHEL3 HVM on HP xw8600 workstation. The (only) PCI slot in xw8600 is
>>> in a nested PCI bridge, according to lspci -t. If pass the card on
>>> this PCI slot into a HVM, the system just hangs, I guess because
>>> some problem occurs and causes the LSI SCSI controller on the same
>>> PCI bridge not work correctly any more. On the same system, the pass
>>> through of another PCI device (a on-board PCI Express NIC) is
>>> working OK.
>>>
>>> Thanks,
>>> Jimmy Jin
>>>
>>> _______________________________________________
>>> Xen-devel mailing list
>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>> http://lists.xensource.com/xen-devel
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