From: Don Zickus <dzickus@redhat.com>
Date: Wed, 5 Jan 2011 03:38:07 +0000 (-0500)
Subject: x86: Only call smp_processor_id in non-preempt cases
X-Git-Tag: v2.6.38-rc1~490^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9ab181fa9ff73a38fccd0a4f1c40a38dfe62b535;p=pandora-kernel.git

x86: Only call smp_processor_id in non-preempt cases

There are some paths that walk the die_chain with preemption on.
Make sure we are in an NMI call before we start doing anything.

This was triggered by do_general_protection calling notify_die
with DIE_GPF.

Reported-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Don Zickus <dzickus@redhat.com>
LKML-Reference: <1294198689-15447-1-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---

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