From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Fri, 19 Nov 2010 09:01:40 +0000 (+0800)
Subject: KVM: MMU: fix forgot flush tlbs on sync_page path
X-Git-Tag: v2.6.38-rc1~244^2~71
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30bfb3c4256422221cc763ff6e749ce8aca8e5c9;p=pandora-kernel.git

KVM: MMU: fix forgot flush tlbs on sync_page path

We should flush all tlbs after drop spte on sync_page path since

Quote from Avi:
| sync_page
| drop_spte
| kvm_mmu_notifier_invalidate_page
| kvm_unmap_rmapp
| spte doesn't exist -> no flush
| page is freed
| guest can write into freed page?

KVM-Stable-Tag.
Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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