From c651cdbce64022a0d6858e57bbbe671078a7b626 Mon Sep 17 00:00:00 2001
From: Andrea Bolognani <abologna@redhat.com>
Date: Wed, 21 Feb 2018 10:17:56 +0100
Subject: [PATCH] qemu: Validate PCI controller options (numaNode)

This change catches an invalid use of the option in our
test suite.

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

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Laine Stump <laine@laine.org>
---
 src/qemu/qemu_domain.c                        | 44 +++++++++++++++++++
 tests/qemuxml2argvdata/pcie-expander-bus.xml  |  3 --
 .../qemuxml2xmloutdata/pcie-expander-bus.xml  |  4 +-
 3 files changed, 45 insertions(+), 6 deletions(-)

diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 18b8dd7ce4..328af9dcca 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -4723,6 +4723,50 @@ qemuDomainDeviceDefValidateControllerPCI(const virDomainControllerDef *cont,
         return -1;
     }
 
+    /* numaNode */
+    switch ((virDomainControllerModelPCI) cont->model) {
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_EXPANDER_BUS:
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCIE_EXPANDER_BUS:
+        /* numaNode can be used for these controllers, but it's not set
+         * automatically so it can be missing */
+        break;
+
+    case VIR_DOMAIN_CONTROLLER_MODEL_PCI_ROOT:
+        /* Only PHBs support numaNode */
+        if (pciopts->numaNode != -1 &&
+            pciopts->modelName != VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_SPAPR_PCI_HOST_BRIDGE) {
+            virReportControllerInvalidOption(cont, model, modelName, "numaNode");
+            return -1;
+        }
+
+        /* However, the default PHB doesn't support numaNode */
+        if (pciopts->numaNode != -1 &&
+            pciopts->modelName == VIR_DOMAIN_CONTROLLER_PCI_MODEL_NAME_SPAPR_PCI_HOST_BRIDGE &&
+            pciopts->targetIndex == 0) {
+            virReportControllerInvalidOption(cont, model, modelName, "numaNode");
+            return -1;
+        }
+        break;
+
+    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_PCIE_ROOT:
+        if (pciopts->numaNode != -1) {
+            virReportControllerInvalidOption(cont, model, modelName, "numaNode");
+            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);
 }
 
diff --git a/tests/qemuxml2argvdata/pcie-expander-bus.xml b/tests/qemuxml2argvdata/pcie-expander-bus.xml
index 237430a1e5..5c5d34d1e0 100644
--- a/tests/qemuxml2argvdata/pcie-expander-bus.xml
+++ b/tests/qemuxml2argvdata/pcie-expander-bus.xml
@@ -35,9 +35,6 @@
       <address type='pci' bus='0x00' slot='4'/>
     </controller>
     <controller type='pci' index='2' model='pcie-root-port'>
-      <target>
-        <node>1</node>
-      </target>
       <address type='pci' bus='0x01'/>
     </controller>
     <controller type='pci' index='3' model='pcie-switch-upstream-port'>
diff --git a/tests/qemuxml2xmloutdata/pcie-expander-bus.xml b/tests/qemuxml2xmloutdata/pcie-expander-bus.xml
index d5e741b80d..b6498fd2eb 100644
--- a/tests/qemuxml2xmloutdata/pcie-expander-bus.xml
+++ b/tests/qemuxml2xmloutdata/pcie-expander-bus.xml
@@ -36,9 +36,7 @@
     </controller>
     <controller type='pci' index='2' model='pcie-root-port'>
       <model name='ioh3420'/>
-      <target chassis='2' port='0x0'>
-        <node>1</node>
-      </target>
+      <target chassis='2' port='0x0'/>
       <address type='pci' domain='0x0000' bus='0x01' slot='0x00' function='0x0'/>
     </controller>
     <controller type='pci' index='3' model='pcie-switch-upstream-port'>