[openib-general] patch trouble

[Michael S. Tsirkin]

Quoting r. Bryan Green <bgreen at nas.nasa.gov>:
> Subject: Re: patch trouble
> 
> "Michael S. Tsirkin" writes:
> > Quoting r. Bryan Green <bgreen at nas.nasa.gov>:
> > > Subject: patch trouble
> > > 
> > > Hello,
> > > Many of the patches in subversion fail to have an effect when I apply them to a kernel,
> > > because they create headers in 'drivers/infiniband/include' which depend on being inclu
> > ded
> > > before the like-named headers in the toplevel 'include'.  Is there a step I am missing 
> > to
> > > make the headers in 'drivers/infiniband/include' get chosen for inclusion first?
> > 
> > Note that backport patches are intended to be applied in an out-of-kernel
> > fashion - they are not changing the kernel at all.
> > 
> > So you build as an out-of-tree driver, and dd something like this to make
> > command line:
> > 
> >                 LINUXINCLUDE='-I$(CWD)/include \
> >                 -I$(CWD)/drivers/infiniband/include \
> >                 -Iinclude \
> >                 $$(if $$(KBUILD_SRC),-Iinclude2 -I$$(srctree)/include) \
> >                 -include include/linux/autoconf.h \
> >                 -include $(CWD)/include/linux/autoconf.h \
> >                 ' \
> > 
> > You can find an example here
> > https://openib.org/svn/gen2/trunk/ofed/openib/scripts/Makefile
> > 
> > BTW, Mellanox is not actively supporting backport patches on the svn trunk.
> > If you want code that works on something other than 2.6.17,
> > I suggest you pull backports for the ofed branch (forked from
> > 2.6.18-rc6) from ofed_1_1 tree by pulling
> > git://www.mellanox.co.il/~git/infiniband ofed_1_1
> > and looking in ofed_scripts directory.
> > 
> 
> Thanks.  I am looking at the git repository, and I see a number of patches in
> 'kernel_patches/fixes' which are apparently applied before the kernel patches under
> 'kernel_patches/backport'.

Right. These are things that will be going into 2.6.19 but
that we decided should be in OFED.

> I also see the discrepancies between the patches in git and
> svn.

kernel code in svn trunk is deprecated - kernel code needs to sync
with linus and doing that from svn adds too much overhead.
In particular we stopped updating the backport patches for svn.

-- 
MST