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