diff options
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/vmx.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 66a77b15e38a..5726cee43f4f 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -1340,6 +1340,16 @@ static inline bool nested_cpu_has_preemption_timer(struct vmcs12 *vmcs12) PIN_BASED_VMX_PREEMPTION_TIMER; } +static inline bool nested_cpu_has_nmi_exiting(struct vmcs12 *vmcs12) +{ + return vmcs12->pin_based_vm_exec_control & PIN_BASED_NMI_EXITING; +} + +static inline bool nested_cpu_has_virtual_nmis(struct vmcs12 *vmcs12) +{ + return vmcs12->pin_based_vm_exec_control & PIN_BASED_VIRTUAL_NMIS; +} + static inline int nested_cpu_has_ept(struct vmcs12 *vmcs12) { return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_EPT); @@ -5896,8 +5906,7 @@ static bool nested_exit_intr_ack_set(struct kvm_vcpu *vcpu) static bool nested_exit_on_nmi(struct kvm_vcpu *vcpu) { - return get_vmcs12(vcpu)->pin_based_vm_exec_control & - PIN_BASED_NMI_EXITING; + return nested_cpu_has_nmi_exiting(get_vmcs12(vcpu)); } static void enable_irq_window(struct kvm_vcpu *vcpu) @@ -10979,6 +10988,19 @@ static int prepare_vmcs02(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, return 0; } +static int nested_vmx_check_nmi_controls(struct vmcs12 *vmcs12) +{ + if (!nested_cpu_has_nmi_exiting(vmcs12) && + nested_cpu_has_virtual_nmis(vmcs12)) + return -EINVAL; + + if (!nested_cpu_has_virtual_nmis(vmcs12) && + nested_cpu_has(vmcs12, CPU_BASED_VIRTUAL_NMI_PENDING)) + return -EINVAL; + + return 0; +} + static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) { struct vcpu_vmx *vmx = to_vmx(vcpu); @@ -11023,6 +11045,9 @@ static int check_vmentry_prereqs(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12) vmx->nested.msrs.entry_ctls_high)) return VMXERR_ENTRY_INVALID_CONTROL_FIELD; + if (nested_vmx_check_nmi_controls(vmcs12)) + return VMXERR_ENTRY_INVALID_CONTROL_FIELD; + if (nested_cpu_has_vmfunc(vmcs12)) { if (vmcs12->vm_function_control & ~vmx->nested.msrs.vmfunc_controls) |