XEN: Giving guest complete control over NIC(s).

[list user]

Gilboa Davara wrote:
> On Tue, 2006-06-20 at 09:19 -0700, list user wrote:
> 
>>Gilboa Davara wrote:
>>
>>>Hello all,
>>>
>>>I'm installing Xen on a machine with multiple Gbps NICs that I'm using
>>>for driver development.
>>>Is there a way to give the guest complete control over a number of these
>>>NICs without having the host to route/bridge the traffic to the guest?
>>
>>Yes.
>>
>>1) use "lspci" to determine which PCI slots the network cards occupy
>>2) Hide them from dom0:  in dom0's grub.conf add "pciback.hide(xx:yy.z)"
>>    to the kernel boot parameters. e.g.
>>      "module /vmlinuz-2.6.16-xen ro root=/dev/vg0/fc4 \
>>      "pciback.hide=(aa:aa.a)(bb:bb.b)"
>>    Multiple slots may be hidden by adding additional parentheticized
>>    slot info.  *Don't use quotes* inside the parens.
>>3) give the selected pci slots to the domU by adding a corresponding
>>    line to its config file: e.g into /etc/xen/vm1 add:
>>      "pci = ['aa:aa.a','bb:bb.b']"
>>     Multiple slots are given within the brackets, *separated by commas*,
>>     *quotes are required* within the brackets.
>>
>>As of 3.0.2 exported pci slots crash domUs when when trying to 
>>automagically save/restore domUs using xendomains or the other tools. 
>>They will require clean boots.
>>
>>Hope that helps.
> 
> 
> Thanks!
> Should I assume I expect near-native performance, right?

AFAIK

> 
> I'll give it a try later this week.
> 
> Gilboa
>