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

[Nathan Stratton <nathan@xxxxxxxxxxxx>]

On Fri, 9 Oct 2009, Pasi Kärkkäinen wrote:

> 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?
No errors.

> All the drivers load correctly?
Yes, also infiniband ipoib works, only having issues with DMA uverbs.

> 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.
Tried that, same.

-Nathan

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