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From: Huang Ying <ying.huang@intel.com>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@elte.hu>, Tony Luck <tony.luck@intel.com>,
        Borislav Petkov <bp@amd64.org>, Chen Gong <gong.chen@linux.intel.com>,
        Hidetoshi Seto <seto.hidetoshi@jp.fujitsu.com>, ying.huang@intel.com
Subject: x86, mce, Use user return notifier in mce
Date: Fri, 13 Jan 2012 08:36:39 +0800
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Replace the home-made TIF_MCE_NOTIFY based code in MCE with user                
return notifier.

To make this possible, make user return notifier lockless firstly.

[RFC 1/2] urn, make user return notifier lockless
[RFC 2/2] x86, mce, Use user return notifier in mce