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xen-users
Re: [Xen-users] Using a dedicated NIC in domU
Hi,
On Feb 6, 2008 7:57 AM, Rainer Sokoll <rainer@xxxxxxxxxx> wrote:
> Hi,
>
> I saw this covered multiple times in the ML archive, but I did not find
> a solution.
>
> Here my environment:
> OpenSuse 10.3, dom0 running 2.6.22.16-0.1-xenpae. 2 NICs, Broadcom
> Corporation NetXtreme BCM5715 Gigabit Ethernet (rev a3), tg3 driver.
> Xen is Suse's latest 3.1.0, both on dom0 and domU.
>
> I was able to hide the 2nd NIC from dom0:
> # lspci | grep Ether
> 0f:04.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5715 Gigabit
> Ethernet (rev a3)
> 0f:04.1 Ethernet controller: Broadcom Corporation NetXtreme BCM5715 Gigabit
> Ethernet (rev a3)
> # dmesg | grep -i pciback
> pciback 0000:0f:04.1: seizing device
> pciback: vpci: 0000:0f:04.1: assign to virtual slot 0
> pciback: vpci: 0000:0f:04.1: assign to virtual slot 0
> pciback: vpci: 0000:0f:04.1: assign to virtual slot 0
> pciback: vpci: 0000:0f:04.1: assign to virtual slot 0
> pciback: vpci: 0000:0f:04.1: assign to virtual slot 0
> # ifconfig eth1
> eth1: error fetching interface information: Device not found
> #
>
> Now I want to export 0000:0f:04.1 into a domU. In its config, I have:
> pci=[ '0f:04.1' ]
> netif = 1
>
> But if I do an lspci in domU, it returns nothing. Something in domU
> looks strange to me:
> # dmesg | grep -i pci
> Allocating PCI resources starting at 20000000 (gap: 18800000:e7800000)
> PCI: Fatal: No config space access function found
> PCI: setting up Xen PCI frontend stub
> PCI: System does not support PCI
> PCI: System does not support PCI
> pcifront pci-0: Installing PCI frontend
> pcifront pci-0: Creating PCI Frontend Bus 0000:00
> #
>
> What is that "System does not support PCI"? If I look at the running
> kernel, it should:
> # zgrep ^CONFIG_PCI /proc/config.gz
> CONFIG_PCI=y
> CONFIG_PCI_GOANY=y
> CONFIG_PCI_DIRECT=y
> CONFIG_PCI_MMCONFIG=y
> CONFIG_PCIEPORTBUS=y
> CONFIG_PCIEAER=y
> CONFIG_PCI_HERMES=m
> CONFIG_PCI_ATMEL=m
> CONFIG_PCI200SYN=m
> CONFIG_PCIPCWATCHDOG=m
> #
>
Can you send your complete kernel config file?
I haven't had a similar problem, but I haven't tried with CentOS. I
have had it work fine with Debian and Ubuntu xen kernels.
Everything else except the "system does not support PCI" messages
looks right to me.
Todd
> Any help is appreciated,
>
> Rainer
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>
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