https://bugzilla.redhat.com/show_bug.cgi?id=1483816

Signed-off-by: Andrea Bolognani <abolo...@redhat.com>
---
 src/qemu/qemu_domain.c | 68 +++++++++++++++++++++++++++++++-------------------
 1 file changed, 43 insertions(+), 25 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 13c2b557fb..3ef5d74e7a 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4285,31 +4285,6 @@ qemuDomainDeviceDefValidateControllerPCIOld(const 
virDomainControllerDef *contro
         controller->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT)
         return 0;
 
-    /* First pass - just check the controller index for the model's
-     * that we care to check... */
-    switch (model) {
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE:
-    case VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_EXPANDER_BUS:
-        if (controller->idx == 0) {
-            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-                           _("index for pci controllers of model '%s' must be 
> 0"),
-                           virDomainControllerModelPCITypeToString(model));
-            return -1;
-        }
-        break;
-
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_DEFAULT:
-    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST:
-        break;
-    }
-
     pciopts = &controller->opts.pciopts;
 
     /* Second pass - now the model specific checks */
@@ -4627,6 +4602,49 @@ qemuDomainDeviceDefValidateControllerPCI(const 
virDomainControllerDef *cont,
         return -1;
     }
 
+    /* index */
+    switch ((virDomainControllerModelPCI) cont->model) {
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_BRIDGE:
+    case VIR_DOMAIN_CONTROLLER_MODEL_DMI_TO_PCI_BRIDGE:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT_PORT:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_UPSTREAM_PORT:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_SWITCH_DOWNSTREAM_PORT:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_EXPANDER_BUS:
+        if (cont->idx == 0) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("Index for '%s' controllers must be > 0"),
+                           model);
+            return -1;
+        }
+        break;
+
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_ROOT:
+        /* pSeries guests can have multiple PHBs, so it's expected that
+         * the index will not be zero for some of them */
+        if (cont->model == VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT &&
+            pciopts->modelName == 
VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_SPAPR_PCI_HOST_BRIDGE) {
+            break;
+        }
+
+        /* For all other pci-root and pcie-root controllers, though,
+         * the index must be zero*/
+        if (cont->idx != 0) {
+            virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+                           _("Index for '%s' controllers must be 0"),
+                           model);
+            return -1;
+        }
+        break;
+
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_DEFAULT:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_LAST:
+    default:
+        virReportEnumRangeError(virDomainControllerModelPCI, cont->model);
+        return -1;
+    }
+
     return qemuDomainDeviceDefValidateControllerPCIOld(cont, def, qemuCaps);
 }
 
-- 
2.14.3

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