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Diffstat (limited to 'arch/x86/kvm/vmx.c')
-rw-r--r--arch/x86/kvm/vmx.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index 451ab2a57ca0..11ea3cbbb78c 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -4392,6 +4392,12 @@ static bool nested_exit_on_intr(struct kvm_vcpu *vcpu)
PIN_BASED_EXT_INTR_MASK;
}
+static bool nested_exit_on_nmi(struct kvm_vcpu *vcpu)
+{
+ return get_vmcs12(vcpu)->pin_based_vm_exec_control &
+ PIN_BASED_NMI_EXITING;
+}
+
static void enable_irq_window(struct kvm_vcpu *vcpu)
{
u32 cpu_based_vm_exec_control;
@@ -4517,6 +4523,26 @@ static void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked)
static int vmx_nmi_allowed(struct kvm_vcpu *vcpu)
{
+ if (is_guest_mode(vcpu)) {
+ struct vmcs12 *vmcs12 = get_vmcs12(vcpu);
+
+ if (to_vmx(vcpu)->nested.nested_run_pending)
+ return 0;
+ if (nested_exit_on_nmi(vcpu)) {
+ nested_vmx_vmexit(vcpu);
+ vmcs12->vm_exit_reason = EXIT_REASON_EXCEPTION_NMI;
+ vmcs12->vm_exit_intr_info = NMI_VECTOR |
+ INTR_TYPE_NMI_INTR | INTR_INFO_VALID_MASK;
+ /*
+ * The NMI-triggered VM exit counts as injection:
+ * clear this one and block further NMIs.
+ */
+ vcpu->arch.nmi_pending = 0;
+ vmx_set_nmi_mask(vcpu, true);
+ return 0;
+ }
+ }
+
if (!cpu_has_virtual_nmis() && to_vmx(vcpu)->soft_vnmi_blocked)
return 0;