From: Jan Beulich <jbeulich@novell.com>
Date: Tue, 16 Nov 2010 22:55:33 +0000 (-0800)
Subject: xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore
X-Git-Tag: v2.6.37-rc4~60^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1c6969ec8e6328e8d288fc585310e9e52fc9db04;p=pandora-kernel.git

xen/evtchn: clear secondary CPUs' cpu_evtchn_mask[] after restore

To bind all event channels to CPU#0, it is not sufficient to set all
of its cpu_evtchn_mask[] bits; all other CPUs also need to get their
bits cleared. Otherwise, evtchn_do_upcall() will start handling
interrupts on CPUs they're not intended to run on, which can be
particularly bad for per-CPU ones.

[ linux-2.6.18-xen.hg 7de7453dee36 ]

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
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