Xen users - Aug 2005 - Problem with XEN and CONFIG_XEN_PHYSDEV_ACCESS

Hello,

I have a problem using CONFIG_XEN_PHYSDEV_ACCESS. I want to access a 
network adapter directly from a Domain != 0 (Router domain). So I enabled
CONFIG_XEN_PHYSDEV_ACCESS and PCI support in the kernel. But then I
can''t
start the domain anymore, even if I don''t select any hardware driver in
the kernel config.

My .config-File for the Domain can be found at
http://sr.dyndns.org/~sroesner/config-physdev

-- Shell Output --
# xm create -f router  -c
Using config file "/etc/xen/router".
Started domain Router, console on port 9633
************ REMOTE CONSOLE: CTRL-] TO QUIT ********

************ REMOTE CONSOLE EXITED *****************
-- /Shell Output --


-- xen config file --
kernel = "/boot/vmlinuz-2.6.11-xenU-router"
memory = 64
name = "Router"
nics=0
disk = [ ''file:/vm/router,sda1,w'' ]
root = "/dev/sda1 ro"
-- /xen config file --

The output of xend.log and xend-debug.log can be found at
http://sr.dyndns.org/~sroesner/xen-log

I really have no clue what''s wrong.. I tried to enable/disable 
PCI-support, to switch off networking for this Domain, ... nothing worked. 
Is it somehow possible to get more debug output?

I use xen 2.0.7, self-compiled on a debian sarge.

Thanks for help,

Sebastian Roesner

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Hi Sebastion,

Sebastian Roesner wrote:
> Hello,
>
> I have a problem using CONFIG_XEN_PHYSDEV_ACCESS. I want to access a
> network adapter directly from a Domain != 0 (Router domain). So I enabled
> CONFIG_XEN_PHYSDEV_ACCESS and PCI support in the kernel. But then I
> can''t start the domain anymore, even if I don''t select
any hardware
> driver in the kernel config.
>
> My .config-File for the Domain can be found at
> http://sr.dyndns.org/~sroesner/config-physdev
you need all the following options set to y for your router domain

# CONFIG_XEN_PRIVILEGED_GUEST is not set
CONFIG_XEN_PHYSDEV_ACCESS=y
# CONFIG_XEN_BLKDEV_BACKEND is not set
# CONFIG_XEN_NETDEV_BACKEND is not set
> -- xen config file --
> kernel = "/boot/vmlinuz-2.6.11-xenU-router"
> memory = 64
> name = "Router"
> nics=0
> disk = [ ''file:/vm/router,sda1,w'' ]
> root = "/dev/sda1 ro"
> -- /xen config file --
you need a pci statement in there describing your network card, like:
pci = [''x,y,z'']

where you have a matching stanza on your kernel line
in grub/menu.lst to hide the device from dom0
physdev_dom0_hide=(x:y.z)

Marcus.

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I''m too tired and cold, methinks! ;)

You don''t seem to have a network driver configured
in your kernel config either.

M.

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hi,

On Do, 2005-08-11 at 00:10 +1000, Marcus Brown wrote:
> You don''t seem to have a network driver configured
> in your kernel config either.
does we need network device drivers? Look here:

http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=151

At the moment, i want serial port access, isdn. I have the same problem.
Enable these options, and the kernel won''t boot. 

Later, if i''m understanding the most parts, i want to move the
firewall/dsl into a domU.


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