[Pkg-ofed-devel] how to build MTHCA IB driver into 2.6.28 kernel

[Guy Coates]

Toru Nishimura wrote:
>>> Q. How can I merge 1.4.2 kernel side IB codes into stock
>>> Linux kernel source tree?   Just copy and replace kernel
>>> source subtree with the corresponding ofa-kernel-source,
>>> and them "make menuconfig && make"?
>>
>> Unfortunately the ofa-kernel build process is rather more complicated
>> than that.  The source tree gets patched with a number of patches
> 
> Ok, that's my understanding.
> 
>> What version is your kernel based on?
> 
> 2.6.28 fetched from DENX.de git repository.
> 
>> OFED 1.4.2 supports up to kernel
>> 2.6.26; if you have a later kernel version, you will run into
>> difficulties.
> 
> I had a hardship to run stock OFED-1.4 install.pl (awesome, frankly)
> against openSUSE11.1 2.6.26-2 kernel source set.
>> The stock linux kernel contains some, but not all, of the  infiniband
>> modules present in OFED,
> 
> I'm aware of it's a rather blunt way, though, I've running 2.6.28-denx
> kernel in "as is" base, and so far "seems working well for us"
> condition is met.  I made mpi2test aginst several MPI packages
> and are collecting reasonable results.

If the only application you need is MPI, it sounds like that you can get
away without rebuilding the kernel modules.

>> so you may be able to get away with not having
>> to rebuild everything. However, you may find that you are missing some
>> feature and protocols available in OFED.

> BTW, did you fix the source tree in svn://svn.debian.org/pkg-ofed/ ?

Benoit did a load of commits over the weekend and I have just added some
fixes to the ofa-kernel source package.

All commits are archived here:

http://lists.alioth.debian.org/pipermail/pkg-ofed-commits/

Cheers,

Guy

-- 
Dr. Guy Coates,  Informatics System Group
The Wellcome Trust Sanger Institute, Hinxton, Cambridge, CB10 1HH, UK
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