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

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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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Xiao Guangrong 2011-09-22 17:02:48 +08:00 • committed by Avi Kivity

parent d5ae7ce835

commit 1cb3f3ae5a

5 changed files with 77 additions and 6 deletions

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1

arch/x86/include/asm/kvm_emulate.h

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5

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/emulate.c

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25

arch/x86/kvm/mmu.c

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47

arch/x86/kvm/x86.c

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