Re: [Xen-devel] PCI delegation works, access to the delegated NIC doesn't

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 7 Mar 2006, at 20:34, Alexander Wilms wrote:

> has anyone seen such a behaviour?:
>
> I delegated successfully my NIC to a domU, but access to it from domU 
> is not
> possible. Device appears, but access to it via 'ifconfig ethX up' 
> doesn't
> work. Ends up in dmesg output like:
> tg3: tg3_reset_hw timed out for eth1, firmware will not restart 
> magic=00000000
> Delegating my USB controllers e.g. works flawlessly.
You could try getting rid of access control on I/O memory and I/O 
ports. Modify the Xen definitions of macros ioports_access_permitted() 
and iomem_access_permitted() to always return 1. Then see if the NIC 
works. If so, the code in domain0 to work out what resources a given 
PCI device requires is not working properly for you.
 -- Keir


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