From 7d4d61544a12333600bdb9b018a149868418692e Mon Sep 17 00:00:00 2001
From: Nathan Lynch <ntl@pobox.com>
Date: Mon, 6 Feb 2006 22:44:23 -0600
Subject: [PATCH] [PATCH] powerpc: avoid timer interrupt replay effect when
 onlining cpu

When a cpu is hotplug-onlined, if we don't set per_cpu(last_jiffy) to
something sane, timer_interrupt will execute its while loop for every
tick missed since the cpu was last online (or since the system was
booted, if we're adding a new cpu).  This can cause weird hangs, ssh
sessions dropping, and we can even go xmon if we take a global IPI at
the wrong time.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
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