From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Date: Thu, 22 Sep 2011 09:02:48 +0000 (+0800)
Subject: KVM: x86: retry non-page-table writing instructions
X-Git-Tag: v3.3-rc1~131^2~70
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1cb3f3ae5a3855ba430430706da4201ace1d6ec4;p=pandora-kernel.git

KVM: x86: retry non-page-table writing instructions

If the emulation is caused by #PF and it is non-page_table writing instruction,
it means the VM-EXIT is caused by shadow page protected, we can zap the shadow
page and retry this instruction directly

The idea is from Avi

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
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