KVM: inject #UD if instruction emulation fails and exit to userspace

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Do not kill VM when instruction emulation fails. Inject #UD and report
failure to userspace instead. Userspace may choose to reenter guest if
vcpu is in userspace (cpl == 3) in which case guest OS will kill
offending process and continue running.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

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This commit is contained in:

Gleb Natapov 2010-05-10 11:16:56 +03:00 • committed by Avi Kivity

parent 57bc24cfd6

commit 6d77dbfc88

5 changed files with 26 additions and 61 deletions

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1

arch/x86/include/asm/kvm_host.h

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5

arch/x86/kvm/mmu.c

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10

arch/x86/kvm/svm.c

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28

arch/x86/kvm/vmx.c

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43

arch/x86/kvm/x86.c

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