diff options
Diffstat (limited to 'arch/x86/kvm/svm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 1bfebe40854f..c813d6cce69f 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -4180,13 +4180,21 @@ static int svm_vcpu_pre_run(struct kvm_vcpu *vcpu) static fastpath_t svm_exit_handlers_fastpath(struct kvm_vcpu *vcpu) { struct vcpu_svm *svm = to_svm(vcpu); + struct vmcb_control_area *control = &svm->vmcb->control; + + /* + * Next RIP must be provided as IRQs are disabled, and accessing guest + * memory to decode the instruction might fault, i.e. might sleep. + */ + if (!nrips || !control->next_rip) + return EXIT_FASTPATH_NONE; if (is_guest_mode(vcpu)) return EXIT_FASTPATH_NONE; - switch (svm->vmcb->control.exit_code) { + switch (control->exit_code) { case SVM_EXIT_MSR: - if (!svm->vmcb->control.exit_info_1) + if (!control->exit_info_1) break; return handle_fastpath_set_msr_irqoff(vcpu); case SVM_EXIT_HLT: |