On Fri, 2010-01-08 at 12:10 +0100, Philippe Gerum wrote: > On Fri, 2010-01-08 at 11:59 +0100, Richard Cochran wrote: > > On Thu, Dec 10, 2009 at 07:56:28AM +0100, Bernhard Pfund wrote: > > > I'm currently working with a fairly new ppc development board (P2020RDB) > > > by > > > Freescale. The board's BSP went mainline with 2.6.32 and I'd like to > > > deploy an > > > I-pipe enabled DENX kernel for testing. Now, is there an I-pipe patch for > > > said > > > kernel on the release schedule anywhere soon? > > > > I got ipipe-2.6.30 running the p2020ds with minimal effort. I can post > > a diff if that might help you. > > > > I should have my own p2020rdb soon... > > > > I have noticed some unexplained freezes running xenomai programs on > > the p2020ds in SMP mode, but I have not yet had time to look into > > it. I hope we can work together to get SMP working reliably. > > I'm working on fixing the pipeline for 2.6.32/ppc64, which includes SMP > mode. 32bit looks ok in UP mode, but I still need to validate SMP there. > So it would be great if you could hammer that patch over your P2020 as > well once it's ready. ETA, early next week. I'll keep you informed about > this.
As expected, upgrading from 2.6.30 to 2.6.32 for ppc64 was a real pain. Anyway, here is a patch which applies against 2.6.32.2 mainline; it is pretty large because it also includes DENX-originated bits, from v2.6.32 to DENX-v2.6.32. http://download.gna.org/adeos/patches/tmp/adeos-ipipe-2.6.32.2-powerpc-2.8-00.patch This is expected to work over Xenomai 2.5.0. Tested over 52xx, 85xx, 4xx for the 32bit support, pasemi for the 64bit part. I did not manage to put my hands on a working ppc32/SMP board to give it a shot yet, so, well, I wish you luck. This said, ppc64/SMP has been validated, so there is hope. Sidenote: ftrace may induce a massive stack consumption on ppc64 under certain circumstances, causing kernel stack overflows. A way to work around this should be to enable CONFIG_IRQSTACKS, but this won't work with Xenomai over ppc64 yet, albeit this does work over ppc32. This patch is in a staging directory for now; waiting for some feedback to go further. HTH, -- Philippe. _______________________________________________ Xenomai-core mailing list Xenomai-core@gna.org https://mail.gna.org/listinfo/xenomai-core
