Re: [Xen-users] Centos 6.0 guest OS missing xen headers

["Fajar A. Nugraha" <list@xxxxxxxxx>]

On Tue, Nov 29, 2011 at 1:39 PM, ravi veerad <veerad.ravi@xxxxxxxxx> wrote:
> Hi,
> setup environment:
> Xen version: Xen 6.0

There's no such thing as Xen 6.0.
There's Xen 4.x, or XenServer 6.0

> DomU: Centos 6.0
> Solarflare drivers: sfc, sfc_resource, sfc_netback, sfc_netfront,
> sfc_netutil (these drivers came with xen 5.6.)
> My task is to port old sfc driver (xen 5.6) to new xen 6.0 and centos (guest
> OS) environment. I am successfully able to port sfc, sfc_resource,
> sfc_netback, sfc_netutil on DOM0 side. Now, when I try to compile
> sfc_netfront and sfc_netutil on the DOMU side (centos 6.0), I am facing the
> following compilation errors:
> /sfc_netfront/accel_xenbus.c: In function ‘vnic_setup_domU_shared_state’:
> /sfc_netfront/accel_xenbus.c:363: error: implicit declaration of function
> ‘bind_listening_port_to_irqhandler’
> /sfc_netfront/accel_xenbus.c:370: error: implicit declaration of function
> ‘irq_to_evtchn_port’
> make[2]: *** [/root/sfc_phase_4/sfc_netfront/accel_xenbus.o] Error 1
> make[1]: *** [_module_/root/sfc_phase_4/sfc_netfront] Error 2
> make[1]: Leaving directory `/usr/src/kernels/2.6.32-71.29.1.el6.i686'
> make: *** [all] Error 2
>     I noticed that in centos 6.0 (2.6.32-71.29.1.el6.i686)  doesn't contain
> the xen headers, And also there are some
> missing symbol in Module.symvers,  (bind_listening_port_to_irqhandler,
>   irq_to_evtchn_port)  which we required to compile our module.

I think these aren't caused by missing headers. Rather, your module
uses old kernel ABI not supported anymore in 2.6.32, or it requires
xen-specific symbols not present in vanilla/Centos version of 2.6.32
(which can be used as xen domU kernel, but not dom0)

Your best bet at this point is to either:
- get newer drivers from solarflare, or
- use it as normal NIC on dom0, use bridging to share network
connection with domU, or
- use whatever kernel version your dom0 use (2.6.32 from JF's tree,
perhaps?) and compile it manually for domU, replacing Centos' kernel
RPM.

-- 
Fajar

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