[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Nested PCI bridge support of VT-d
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? 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 > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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