Try patch 2.6.26-8 with rt11 , it worked for me.

r


2008/10/25 Darren Landrum <darren.landrum@sbcglobal.net>
Darren Landrum wrote:
> I guess the subject says it all. I haven't been able to find an rt
> version of the current (2.6.26.5-45.fc9.i686 SMP) Fedora 9 kernel, and I
> was kinda hoping someone out there might have already compiled one.
> Thank you!

Based upon Fernando's recent answer to a different thread on this issue
that I somehow overlooked, I'm going to guess that the answer to my
question is a big fat no.

In fact, I've been hearing a lot of horror stories about the new kernels
being unpatchable for rt use. Hopefully, things will straighten
themselves out soon.

-- Darren