On Fri, Mar 7, 2008 at 5:19 PM, Richard Cochran
<[EMAIL PROTECTED]> wrote:
> I posted this patch today on linux-arm-kernel, but I repeat it
>  here because there does not seem to be too much interest on that
>  list for the ARM FCSE.
>
>  I also tried to combine this patch with ipipe for kernel 2.6.20
>  running on the Intel IXDP465, but after booting I soon get a BUG.

Do you get a bug with I-pipe alone ? Or with Xenomai ? If with
Xenomai, you should probably change Xenomai context switch routine to
match Linux context switch routine (adding a call to set_pid, if I
understood your patch correctly).

>
>  Anyhow, perhaps the ARM people might take a look at combining
>  ipipe with FCSE...

I hope that others can test it: the machine with which I work at home
is an AT91RM9200, without FCSE support, and the IXP465 I have at work
runs more than 96 pids. There is something I did not understand in
your patch: do you reserve PIDs for shared libraries ? How do you
handle threads stacks ? The old FASS patch had problems with this.

Also, it is completely unrelated, did you see the recent post about
write buffer coalescence on the Linux arm kernel mailing list ? From
my test on IXP465 it seems that these machines are affected as well.

-- 
 Gilles Chanteperdrix

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