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

[Guy Coates]

Toru Nishimura wrote:
> Folks,
> 
> It's necessary for me to build the entire IB stack and driver
> into a custom PPC32 kernel.
> 
> 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 menu config && make"?
> 

Hi Toru,

Unfortunately the ofa-kernel build process is rather more complicated
than that.  The source tree gets patched with a number of patches which


What version is your kernel based on? OFED 1.4.2 supports up to kernel
2.6.26; if you have a later kernel version, you will run into difficulties.


The stock linux kernel contains some, but not all, of the  infiniband
modules present in OFED, 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.


If you are using a 2.6.26 based kernel, you should be able to build the
kernel modules following the procedure here.

http://pkg-ofed.alioth.debian.org/howto/infiniband-howto-3.html

You can use module-assistant to build against customised kernels.
To build against your custom kernel, call module-assistant with:

module-assistant -t -k /path/to/kernel-source build ofa-kernel.

However, before you do that, you will need to add a configure  section
in the rules  file for the PPC32 architecture (~line 85 in the
ofa-kernel rules file).

Cheers,

Guy

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