Re: [Xen-users] Re: 2.6.31.1 xen and infiniband uverbs

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, Oct 08, 2009 at 07:29:03PM -0500, Nathan Stratton wrote:
> 
> On Thu, 8 Oct 2009, Nathan Stratton wrote:
> 
> >If I build 2.6.31.1 using latest git add just add infiniband I am able to 
> >use infiniband uverbs without any issues. If I turn on XEN with dom0 in 
> >the config and run that kernel infiniband uverbs does not pass data, 
> >ibv_rc_pingpong just sits there.
> >
> >Any ideas? Anyone get infiniband and xen working in a kernel? I talked to 
> >the QFED guys and they say that since infiniband works in the 2.6.31.1 
> >kernel just fine that I have to talk to the xen guys. :(
> 
> Interesting, the same kernel works if I load it without xen.
> 

Do you get any errors in the dom0 kernel dmesg? Or in Xen hypervisor 
dmesg/logs? 

All the drivers load correctly?

Try these commands:

dmesg
xm dmesg
xm log

Also add "loglvl=all guest_loglvl=all" parameters for xen-3.4.1.gz.

You might also want to add "dom0_mem=2G" for xen-3.4.1.gz. 
Or something that is less than 4G..  just in case there's some 32bit 
counter/variable bug.

-- Pasi

> Working Infiniband:
> title Fedora (2.6.31.1)
>       root (hd0,0)
>       kernel /boot/vmlinuz-2.6.31.1 ro 
>       root=UUID=b770a383-39e0-48c5-91f5-6c0630f42410 rhgb quiet
>       initrd /boot/initrd-2.6.31.1.img
> 
> Broken Infiniband:
> title Fedora (2.6.31.1)
>         root (hd0,0)
>         kernel /boot/xen-3.4.1.gz
>         module /boot/vmlinuz-2.6.31.1 ro 
>         root=UUID=b770a383-39e0-48c5-91f5-6c0630f42410 rhgb quiet
>         module /boot/initrd-2.6.31.1.img
> 
> 
> ><>
> Nathan Stratton                                CTO, BlinkMind, Inc.
> nathan at robotics.net                         nathan at blinkmind.com
> http://www.robotics.net                        http://www.blinkmind.com
> 
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