[Xenomai-core] Support for 2.6.19

[Xenomai-core] Support for 2.6.19

[Detlef Vollmann]

Hello,

the x86 branch supports kernel 2.6.19, but the ARM branch only supports
2.6.15.  Is there a specific reason for this?
Does anybody have a feeling what would be needed to be changed
for 2.6.19 support?

Best
  Detlef

-- 
Detlef Vollmann   vollmann engineering gmbh
Linux and C++ for Embedded Systems    http://www.vollmann.ch/
Linux for PXA270 Colibri module: http://www.vollmann.ch/en/colibri/

Re: [Xenomai-core] Support for 2.6.19

[Gilles Chanteperdrix]

Detlef Vollmann wrote:
> Hello,
> 
> the x86 branch supports kernel 2.6.19, but the ARM branch only supports
> 2.6.15.  Is there a specific reason for this?
> Does anybody have a feeling what would be needed to be changed
> for 2.6.19 support?

I guess the reason is that it is some work that needs to be done. I had
ported from 2.6.15 to 2.6.17, it was a trivial task as far as I could
see, but never tried to port to 2.6.19. There were some architectural
changes in 2.6.19, I do not know about their impact on the ARM
architecture though.

-- 
                                                 Gilles Chanteperdrix

Re: [Xenomai-core] Support for 2.6.19

[Sebastian Smolorz]

Gilles Chanteperdrix wrote:
> Detlef Vollmann wrote:
> > Hello,
> >
> > the x86 branch supports kernel 2.6.19, but the ARM branch only supports
> > 2.6.15.  Is there a specific reason for this?
> > Does anybody have a feeling what would be needed to be changed
> > for 2.6.19 support?
>
> I guess the reason is that it is some work that needs to be done. I had
> ported from 2.6.15 to 2.6.17, it was a trivial task as far as I could
> see, but never tried to port to 2.6.19. There were some architectural
> changes in 2.6.19, I do not know about their impact on the ARM
> architecture though.

Shortly before christmas I tried to port I-pipe for ARM to 2.6.19 during an 
insane hacking session. ;-) I tried to do it with I-pipe 1.5 and not with 
version 1.6 (as Philippe did it for x86) because I felt it could be less 
work. But probably I was wrong because too much problems appeared that I did 
not fix because the time is missing ATM. A cleaner approach surely would be 
to port I-pipe 1.6 for ARM to 2.6.19. Perhaps I can find some time for a 
second attempt soon.

--
Sebastian

Re: [Xenomai-core] Support for 2.6.19

[Detlef Vollmann]

Gilles Chanteperdrix wrote:
> I guess the reason is that it is some work that needs to be done. I had
> ported from 2.6.15 to 2.6.17,
Interesting.
Is that patch available somewhere?

> it was a trivial task as far as I could
> see, but never tried to port to 2.6.19. There were some architectural
> changes in 2.6.19, I do not know about their impact on the ARM
> architecture though.
Thanks for the info.
So I'll delay me decision to move from 2.6.15 to some newer version...
(Maybe in February I have some time to look into a port myself.)

  Detlef

-- 
Detlef Vollmann   vollmann engineering gmbh
Linux and C++ for Embedded Systems    http://www.vollmann.ch/
Linux for PXA270 Colibri module: http://www.vollmann.ch/en/colibri/