From: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Date: Tue, 17 Jul 2012 13:52:52 +0000 (+0800)
Subject: KVM: MMU: track the refcount when unmap the page
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~15^2~101^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=86fde74cf5b829627b37ca86322acfdd99b524b8;p=pandora-kernel.git

KVM: MMU: track the refcount when unmap the page

It will trigger a WARN_ON if the page has been freed but it is still
used in mmu, it can help us to detect mm bug early

Signed-off-by: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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