From: Marcelo Tosatti <mtosatti@redhat.com>
Date: Mon, 23 Mar 2015 23:21:51 +0000 (-0300)
Subject: x86: kvm: Revert "remove sched notifier for cross-cpu migrations"
X-Git-Tag: omap-for-v4.1/fixes-rc1~202^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a4e6be9ca17;p=pandora-kernel.git

x86: kvm: Revert "remove sched notifier for cross-cpu migrations"

The following point:

    2. per-CPU pvclock time info is updated if the
       underlying CPU changes.

Is not true anymore since "KVM: x86: update pvclock area conditionally,
on cpu migration".

Add task migration notification back.

Problem noticed by Andy Lutomirski.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
CC: stable@kernel.org # 3.11+
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