On Mon, 2010-08-23 at 14:43 +0530, Prakash A S wrote: > > > On Mon, Aug 23, 2010 at 2:05 PM, Gilles Chanteperdrix > <[email protected]> wrote: > > Prakash A S wrote: > > Dear All, > > Now I am working on AT91RM9200 based processor ARM > board with Linux > > 2.6.20 kernel and also planing to port Xenomai on this > board. I preferred > > xenomai-2.4.0. Because it has adeos-ipipe patch for 2.6.20 > kernel. However I > > found that there is an separate ipipe patch available for > AT91 processor in > > xenomai-2.3.2. Do I need any similar patch for xenomai-2.4.0 > or > > adeos-ipipe-2.6.20-arm-1.802.patch is enough?. > > > > I beleive the steps will be like, > > linux-2.6.20+2.6.20-at91.patch.gz > +adeos-ipipe-2.6.20-arm-1.802.patch > > > You did it again: as documented in > ksrc/arch/arm/patches/README, > what Xenomai version you pick is largely irrelevant to what > I-pipe patch > you want to use, so, you can probably use the I-pipe patch for > 2.6.20 > with Xenomai 2.5.4. > > > Agreed. The intention is to clarify few doubts. Otherwise I will > missed to get such an specific info mentioned below. > Thanks for the info. > > All releases of a Xenomai branch are backward compatible, so, > if you > want to pick something in the any branch, pick the latest > (2.4.10 for > 2.4 branch, 2.5.4 for 2.5 branch). Also note that all I-pipe > patches up > to, but not including, 2.6.28-1.12-05, are buggy, so, if you > want to use > 2.6.20, you will have to apply the patch attached to this > mail: > > https://mail.gna.org/public/xenomai-core/2009-08/msg00021.html > > As for the initial question, I do not remember that far in the > past. > But, at some point in the past, the I-pipe patch started being > able to > be applied with and without the AT91 patch, I do not remember > if > 2.6.20-1.8-02 was in this case. > > > At this moment my board only supports linux-2.6.20. So I just like to > port xenomai and test the board with the same kernel version. Later I > will upgrade the linux kernel and move to the latest xenomai.
What Gilles told you, is that Xenomai is backward-compatible with older Adeos releases. Therefore, unless you really want to hit Xenomai bugs which have been solved since 2007, you should consider using the _latest_ Xenomai release, which does support 2.6.20 kernels, with your legacy kernel. Could you somehow trust us when we recommend what we think is the best way for your project to succeed? The other incentive for you to do that, is to get answers to your questions if any issue happens during this process. Because likely nobody will ever bother or have any clue for problems regarding Xenomai 2.4.0 on this list. > > I would like to know in which format you getting my mails now?. > > -Prakash > _______________________________________________ > Xenomai-help mailing list > [email protected] > https://mail.gna.org/listinfo/xenomai-help -- Philippe. _______________________________________________ Xenomai-help mailing list [email protected] https://mail.gna.org/listinfo/xenomai-help
