status "Ingo's Real-Time" patch

Does anybody already (successfully) use "Ingo's Real-Time" patch
for PPC.
It can be found here:
http://people.redhat.com/mingo/realtime-preempt/

We tried applying an older patch for the 2.6.19 kernel on a
MPC870 board, but it failed to compile.

Thanks,
N.

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