From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Fri, 11 Jun 2010 13:35:15 +0000 (+0800)
Subject: KVM: MMU: don't walk every parent pages while mark unsync
X-Git-Tag: v2.6.36-rc1~580^2~82
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1047df1fb682a41eb9885d6b3f2d04d6c8fd3756;p=pandora-kernel.git

KVM: MMU: don't walk every parent pages while mark unsync

While we mark the parent's unsync_child_bitmap, if the parent is already
unsynced, it no need walk it's parent, it can reduce some unnecessary
workload

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