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KVM: skip_emulated_instruction() decode instruction if size is not known

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Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Gleb Natapov 2009-05-11 13:35:49 +03:00 committed by Avi Kivity
parent 923c61bbc6
commit f629cf8485
1 changed files with 5 additions and 6 deletions
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11
arch/x86/kvm/svm.c
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@ -228,7 +228,9 @@ static void skip_emulated_instruction(struct kvm_vcpu *vcpu)
struct vcpu_svm *svm = to_svm(vcpu);
if (!svm->next_rip) {
printk(KERN_DEBUG "%s: NOP\n", __func__);
if (emulate_instruction(vcpu, vcpu->run, 0, 0, EMULTYPE_SKIP) !=
EMULATE_DONE)
printk(KERN_DEBUG "%s: NOP\n", __func__);
return;
}
if (svm->next_rip - kvm_rip_read(vcpu) > MAX_INST_SIZE)
@ -1868,11 +1870,8 @@ static int task_switch_interception(struct vcpu_svm *svm,
if (reason != TASK_SWITCH_GATE ||
int_type == SVM_EXITINTINFO_TYPE_SOFT ||
(int_type == SVM_EXITINTINFO_TYPE_EXEPT &&
(int_vec == OF_VECTOR || int_vec == BP_VECTOR))) {
if (emulate_instruction(&svm->vcpu, kvm_run, 0, 0,
EMULTYPE_SKIP) != EMULATE_DONE)
return 0;
}
(int_vec == OF_VECTOR || int_vec == BP_VECTOR)))
skip_emulated_instruction(&svm->vcpu);
return kvm_task_switch(&svm->vcpu, tss_selector, reason);
}