3 files changed, 12 insertions, 0 deletions
diff --git a/sys/amd64/amd64/legacy.c b/sys/amd64/amd64/legacy.c
index 2247c9b4f010..f719611cfef2 100644
--- a/sys/amd64/amd64/legacy.c
+++ b/sys/amd64/amd64/legacy.c
@@ -207,6 +207,9 @@ legacy_read_ivar(device_t dev, device_t child, int which, uintptr_t *result)
 	struct legacy_device *atdev = DEVTOAT(child);
 
 	switch (which) {
+	case LEGACY_IVAR_PCIDOMAIN:
+		*result = 0;
+		break;
 	case LEGACY_IVAR_PCIBUS:
 		*result = atdev->lg_pcibus;
 		break;
@@ -223,6 +226,8 @@ legacy_write_ivar(device_t dev, device_t child, int which, uintptr_t value)
 	struct legacy_device *atdev = DEVTOAT(child);
 
 	switch (which) {
+	case LEGACY_IVAR_PCIDOMAIN:
+		return EINVAL;
 	case LEGACY_IVAR_PCIBUS:
 		atdev->lg_pcibus = value;
 		break;
diff --git a/sys/amd64/include/legacyvar.h b/sys/amd64/include/legacyvar.h
index 91f784f1f143..5ab7b3567238 100644
--- a/sys/amd64/include/legacyvar.h
+++ b/sys/amd64/include/legacyvar.h
@@ -30,12 +30,14 @@
 #define	_MACHINE_LEGACYVAR_H_
 
 enum legacy_device_ivars {
+	LEGACY_IVAR_PCIDOMAIN,
 	LEGACY_IVAR_PCIBUS
 };
 
 #define LEGACY_ACCESSOR(var, ivar, type)				\
     __BUS_ACCESSOR(legacy, var, LEGACY, ivar, type)
 
+LEGACY_ACCESSOR(pcidomain,		PCIDOMAIN,	uint32_t)
 LEGACY_ACCESSOR(pcibus,			PCIBUS,		uint32_t)
 
 #undef LEGACY_ACCESSOR
diff --git a/sys/amd64/pci/pci_bus.c b/sys/amd64/pci/pci_bus.c
index d07c18dc6aa8..4a514f4ddfad 100644
--- a/sys/amd64/pci/pci_bus.c
+++ b/sys/amd64/pci/pci_bus.c
@@ -276,6 +276,9 @@ legacy_pcib_read_ivar(device_t dev, device_t child, int which,
 {
 
 	switch (which) {
+	case  PCIB_IVAR_DOMAIN:
+		*result = 0;
+		return 0;
 	case  PCIB_IVAR_BUS:
 		*result = legacy_get_pcibus(dev);
 		return 0;
@@ -289,6 +292,8 @@ legacy_pcib_write_ivar(device_t dev, device_t child, int which,
 {
 
 	switch (which) {
+	case  PCIB_IVAR_DOMAIN:
+		return EINVAL;
 	case  PCIB_IVAR_BUS:
 		legacy_set_pcibus(dev, value);
 		return 0;