krishna wrote:

> Hi all,
>
>    Can any one tell what is a  "dead CPU" in CONFIG_HOTPLUG_CPU .

It's a CPU that needs to be swapped out while the system is still 
running. Some high-end systems (Sun SPARCs and IBM POWERs come to mind) 
don't require a system shutdown to replace a bad CPU.

-- 
-- Skylar Thompson (skylar@cs.earlham.edu)
-- http://www.cs.earlham.edu/~skylar/