[BUG] hotplug cpus on ia64

From: Cliff Wickman
Date: Wed May 21 2008 - 10:45:56 EST


Gentlemen,

I built an ia64 kernel from Andrew's tree (2.6.26-rc2-mm1)
and get a very predictable hotplug cpu problem.

billberry1:/tmp/cpw # ./dis
disabled cpu 17
enabled cpu 17
billberry1:/tmp/cpw # ./dis
disabled cpu 17
enabled cpu 17
billberry1:/tmp/cpw # ./dis

The script that disables the cpu always hangs (unkillable)
on the 3rd attempt.
I haven't spent any debugging time on it yet.

Just wondering if you've seen it? It doesn't seem to happen x86_64.

-Cliff Wickman
cpw@xxxxxxx
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