[Xen-users] Re: [Xen-devel] Re: HVM DomU, msi_translate=0, MSI/MSI-X PCI passthrough fails.

[Mark Adams <mark@xxxxxxxxxxxxxxxxxx>]

On Wed, Dec 08, 2010 at 12:01:25PM -0500, Konrad Rzeszutek Wilk wrote:
> > > Just a recap:
> > >      you pass through:
> > >      - 3 physical nics/IGB
> > >      - 1 ISDN pci ISDN box
> > 
> > The redfone box runs on 1 of the nics - its not seperate. It converts
> > ISDN to TDMoE see here.. http://www.red-fone.com/
> > 
> > >      - all using msi/msi-x interrupts ?
> > 
> > I tried using msi/msi-x interrupts, but it caused the raid card to drop
> > off (after some use) and provided seemingly even worse performance than
> > pegging everything back to legacy.
> 
> Were you able to get a serial log and hit all of the differetn debug options
> when the the RAID card died?
> > 

I didn't get it to crash - I have spent my limited time with the
hardware trying to get the setup to work effectively on the current
debian xen packages (hence disabling all the MSI stuff which seemed to
be the problem).

I understand that this isn't helpful in terms of getting whatever
bugs may be there fixed for the future however!

> > > 
> > > Have you tried using a PV domU instead of a HVM domU ?
> > 
> > I initially tried PV but had issues with the igb NIC's. There was
> > another thread somewhere about my issues with that.
> 
> Hmm, the only other thread I see from you is about the RAID.
> > 
> > 
> > > Have you tried passing through only the ISDN box, and let the network run 
> > > with the xen backend/frontend to rule out the IGB/network stuff ?
> 
> Mr. Sander idea of isolating one piece by piece is the right way.
> 
> There is a bunch of warnings in the QEMU output - some of them quite .. 
> troubling.
> 
> You seem to have issues with gntdev (as in, not found), but if you are using 
> OpenSuSE
> then that would work - I think. When you tested xen-unstable did you use the
> OpenSUSE kernel or the PV-OPS one?

I'm running the Debian xen packages in squeeze (4.0.1-1 and 2.6.32-28) -
haven't stepped out of the packages at all.

Regards,
Mark

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