[openib-general] PPC64 2.6 kernel support

Fri Mar 26 09:40:56 PST 2004

On Fri, Mar 26, 2004 at 09:30:31AM -0800, Roland Dreier wrote:
>     Troy> So, the question is, is there *anything* available now that
>     Troy> works on linux-2.6.3 on any platform??
> 
> Yes, the "infiniband-kernel" package available from openib.org works
> on linux-2.6.3 on i386.  The build system is not too bad -- you just
> drop an drivers/infiniband directory into your kernel, apply a couple
> of tiny patches to get kbuild to see the infiniband drivers, and build
> your modules as usual.
> 
>     Troy> I'm willing to do the work to get it to build on PPC64, but
>     Troy> I need something that I can successfully build and run on
>     Troy> linux-2.6.3 x86, and is 'open source'.
> 
> I'd be happy to help get ppc64 working.  Unfortunately I have no
> access to G5 hardware right now, but I can at least try to figure out
> any problems you run into.
> 
> I do have access to a pSeries machine, so I can at least get the tree
> to build for ppc64.  (There are other problems on pSeries, since the
> Mellanox driver doesn't use the PCI DMA API, while such use is
> absolutely required on pSeries)  Given that the IB HCA is 64-bit PCI
> capable, can we get away without using the IOMMU on PPC G5?

I guess we're stuck with 2GB of memory for now then.. my understanding
is the mac G5 doesn't support 64 bit pci addressing.

Oh yeah.. I'll probably need to run a subnet manager on a host.. what's
the status of opensm? (I could run opensm on an x86 machine if need be)

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