[openib-general] Problem in patching 2.6.9 kernel

[Jack Morgenstein]

at URL 
https://openib.org/svn/gen2/branches/backport/2.6.9/

look at file core_3935_to_2_6_9.patch, and take the patch hunk for:
	latest/drivers/infiniband/core/uverbs_main.c

This hunk addresses the "get_sb_pseudo" issue.  The hunk should be OK at your SVN revision, too.
Note that you may get a "symbol redefined" warning as a result of the patch -- ignore it.
(the warning arises from kernel include files, which do not define the function as "static").

The basic problem was that in kernel 2.6.9, this function was not exported to the kernel's symbol table.

Jack

On Wed, Nov 09, 2005 at 09:01:14AM +0200, Liang Peng wrote:
> Hi there,
> 
> Got some problem in patch 2.6.9 kernel and someone please help me out. 
> Thanks.
> 
> The details are as follows:
> 
> 1) I wanted to try OpenIB on our AMD 64 Opteron machines, with 
> Cisco/Topspin IB switch and Silverstorm HCA and cables with PCI-X slots.
> 
> 2) I installed RHEL4U2 with kernel 2.6.9-22ELsmp and am using gcc to 
> compile.
> 
> 3) I downloaded the OpenIB packages from 
> http://www.openib.org/downloads.html, which is openib-userspace-svn3279-2.x86_64.rpm <http://openib.org/downloads/openib-userspace-svn3279-2.x86_64.rpm>.
> 3.5) I am following OpenIB's installation guide at 
> https://openib.org/tiki/tiki-index.php?page=Installation+Cheat+Sheet
> 
> 4) I got the patches from 
> https://openib.org/svn/gen2/branches/backport-to-2.6.9/
> 
> and got the *svn3279* patches because the OpenIB rpms that I downloaded 
> is svn3279.
> 
> 5) I applied the patches Linux kernel without any problems (at least I 
> can't see any problems here).
> 
> 6) I did "make menuconfig" and selected the corresponding infiniband support modules, 
> saved configuration and exited.
> 
> 7) I tried to add udev rules, but found that the file /etc/udev/udev.rules doesn't 
> exist (however the directory /etc/udev exists with rules.d/ and some other subdirectories). 
> So I just created a new file /etc/udev/rules.d/90-ib.rules as the installation guide suggests. 
> 
> 8) The problems occurs when I tried to compile and load the modules:
> 
> [root at thebe linux-2.6.9]# make modules
> ...
>   CHK     include/linux/version.h
> 
> make[1]: `arch/x86_64/kernel/asm-offsets.s' is up to date.
> 
>   Building modules, stage 2.
> 
>   MODPOST
> 
> *** Warning: "get_sb_pseudo" [drivers/infiniband/core/ib_uverbs.ko] 
> undefined!
> 
> 
> [root at thebe linux-2.6.9]# make modules_install
> 
> ......
> 
> if [ -r System.map ]; then /sbin/depmod -ae -F System.map  2.6.9; fi
> 
> WARNING: /lib/modules/2.6.9/kernel/drivers/infiniband/core/ib_uverbs.ko 
> needs unknown symbol get_sb_pseudo
> 
> 
> So the modules cannot be installed and I can't load them with "modprobe"
> and it says the module cannot be found.
> 
> Can someone point out what I did wrongly? Any hints will be appreciated 
> very much.
> 
> 
> Regards,
> Liang
> 
> -- 
> Large Scale Computing and Grid Computing
> Asia Pacific Science & Technology Center
> Sun Microsystems Inc. 
> Homepage: http://apstc.sun.com.sg
> Email: Liang.Peng at Sun.com
> and 
> Nanyang Technological University, Singapore
> Email: MLPeng at ntu.edu.sg
> 
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