[libvirt] [RFC PATCH v2 REBASE 06/18] conf: Add post parse code for mdevs to virDomainHostdevDefPostParse

[Erik Skultety]

We need to make sure that if user explicitly provides a guest address
for a mdev device, the address type will be matching the device API
supported on that specific mediated device and error out with an
incorrect XML message.

Signed-off-by: Erik Skultety <eskultet at redhat.com>
---
 src/conf/domain_conf.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 522553c..1fdab6a 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4240,10 +4240,26 @@ virDomainHostdevDefPostParse(virDomainHostdevDefPtr dev,
             }
         }
         break;
+    case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV: {
+        int model = dev->source.subsys.u.mdev.model;
+
+        if (dev->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
+            return 0;
+
+        if (model == VIR_MDEV_MODEL_TYPE_VFIO_PCI &&
+            dev->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
+            virReportError(VIR_ERR_XML_ERROR,
+                           _("Unsupported address type '%s' with mediated "
+                             "device model '%s'"),
+                           virDomainDeviceAddressTypeToString(dev->info->type),
+                           virMediatedDeviceModelTypeToString(model));
+            return -1;
+        }
+    }
+
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB:
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI:
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI_HOST:
-    case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_MDEV:
     case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_LAST:
         break;
     }
-- 
2.10.2