diff --git a/sys/amd64/include/vmm_dev.h b/sys/amd64/include/vmm_dev.h
--- a/sys/amd64/include/vmm_dev.h
+++ b/sys/amd64/include/vmm_dev.h
@@ -147,7 +147,7 @@
 };
 
 struct vm_pptdev_msi {
-	int		vcpu;
+	int		vcpu;		/* unused */
 	int		bus;
 	int		slot;
 	int		func;
@@ -157,7 +157,7 @@
 };
 
 struct vm_pptdev_msix {
-	int		vcpu;
+	int		vcpu;		/* unused */
 	int		bus;
 	int		slot;
 	int		func;
diff --git a/sys/amd64/vmm/vmm_dev.c b/sys/amd64/vmm/vmm_dev.c
--- a/sys/amd64/vmm/vmm_dev.c
+++ b/sys/amd64/vmm/vmm_dev.c
@@ -451,8 +451,6 @@
 	case VM_INJECT_EXCEPTION:
 	case VM_GET_CAPABILITY:
 	case VM_SET_CAPABILITY:
-	case VM_PPTDEV_MSI:
-	case VM_PPTDEV_MSIX:
 	case VM_SET_X2APIC_STATE:
 	case VM_GLA2GPA:
 	case VM_GLA2GPA_NOFAULT: