From: Shaohua Li <shaohua.li@intel.com>
Date: Mon, 12 Dec 2005 08:37:02 +0000 (-0800)
Subject: [PATCH] x86: fix NMI with CPU hotplug
X-Git-Tag: v2.6.15-rc6~141
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82584ef75b7c14f22028595b0e8aa904464c5240;p=pandora-kernel.git

[PATCH] x86: fix NMI with CPU hotplug

With CPU hotplug enabled, NMI watchdog stoped working.  It appears the
violation is the cpu_online check in nmi handler.  local ACPI based NMI
watchdog is initialized before we set CPU online for APs.  It's quite
possible a NMI is fired before we set CPU online, and that's what happens
here.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Zwane Mwaikambo <zwane@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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