diff options
Diffstat (limited to 'arch/x86/kvm/svm/svm.c')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 23 |
1 files changed, 15 insertions, 8 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index a191ec138636..c1506069e67c 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3706,6 +3706,18 @@ static void svm_complete_interrupts(struct kvm_vcpu *vcpu) vector = exitintinfo & SVM_EXITINTINFO_VEC_MASK; type = exitintinfo & SVM_EXITINTINFO_TYPE_MASK; + /* + * If NextRIP isn't enabled, KVM must manually advance RIP prior to + * injecting the soft exception/interrupt. That advancement needs to + * be unwound if vectoring didn't complete. Note, the _new_ event may + * not be the injected event, e.g. if KVM injected an INTn, the INTn + * hit a #NP in the guest, and the #NP encountered a #PF, the #NP will + * be the reported vectored event, but RIP still needs to be unwound. + */ + if (int3_injected && type == SVM_EXITINTINFO_TYPE_EXEPT && + kvm_is_linear_rip(vcpu, svm->int3_rip)) + kvm_rip_write(vcpu, kvm_rip_read(vcpu) - int3_injected); + switch (type) { case SVM_EXITINTINFO_TYPE_NMI: vcpu->arch.nmi_injected = true; @@ -3719,16 +3731,11 @@ static void svm_complete_interrupts(struct kvm_vcpu *vcpu) /* * In case of software exceptions, do not reinject the vector, - * but re-execute the instruction instead. Rewind RIP first - * if we emulated INT3 before. + * but re-execute the instruction instead. */ - if (kvm_exception_is_soft(vector)) { - if (vector == BP_VECTOR && int3_injected && - kvm_is_linear_rip(vcpu, svm->int3_rip)) - kvm_rip_write(vcpu, - kvm_rip_read(vcpu) - int3_injected); + if (kvm_exception_is_soft(vector)) break; - } + if (exitintinfo & SVM_EXITINTINFO_VALID_ERR) { u32 err = svm->vmcb->control.exit_int_info_err; kvm_requeue_exception_e(vcpu, vector, err); |