From: Luca Fancellu <luca.fancellu@arm.com>

On ARM, if the hardware domain is using the emulated bus, it should not
be allowed to add/remove pci devices, so return EOPNOTSUPP in that case.

Signed-off-by: Luca Fancellu <luca.fancellu@arm.com>
Signed-off-by: Stewart Hildebrand <stewart.hildebrand@amd.com>
Signed-off-by: Mykyta Poturai <mykyta_poturai@epam.com>
---
 xen/drivers/pci/physdev.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/xen/drivers/pci/physdev.c b/xen/drivers/pci/physdev.c
index d46501b884..5b3f8dde14 100644
--- a/xen/drivers/pci/physdev.c
+++ b/xen/drivers/pci/physdev.c
@@ -19,6 +19,9 @@ ret_t pci_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
         struct pci_dev_info pdev_info;
         nodeid_t node = NUMA_NO_NODE;
 
+        if ( hwdom_uses_vpci() )
+            return -EOPNOTSUPP;
+
         if ( !is_pci_passthrough_enabled() && !arch_pci_device_physdevop() )
             return -EOPNOTSUPP;
 
@@ -57,6 +60,9 @@ ret_t pci_physdev_op(int cmd, XEN_GUEST_HANDLE_PARAM(void) arg)
     case PHYSDEVOP_pci_device_remove: {
         struct physdev_pci_device dev;
 
+        if ( hwdom_uses_vpci() )
+            return -EOPNOTSUPP;
+
         if ( !is_pci_passthrough_enabled() && !arch_pci_device_physdevop() )
             return -EOPNOTSUPP;
 
-- 
2.34.1