diff --git a/src/cpu/cpu_ppc64.c b/src/cpu/cpu_ppc64.c
index 9997e14a89..7da67ec94a 100644
--- a/src/cpu/cpu_ppc64.c
+++ b/src/cpu/cpu_ppc64.c
@@ -780,6 +780,25 @@ virCPUppc64DriverGetModels(char ***models)
     return map->nmodels;
 }
 
+
+static const char *
+virCPUppc64GetVendorForModel(const char *modelName)
+{
+    virCPUppc64Map *map = NULL;
+    virCPUppc64Model *model;
+
+    if (!(map = virCPUppc64GetMap()))
+        return NULL;
+
+    model = ppc64ModelFind(map, modelName);
+
+    if (!model || !model->vendor)
+        return NULL;
+
+    return model->vendor->name;
+}
+
+
 struct cpuArchDriver cpuDriverPPC64 = {
     .name       = "ppc64",
     .arch       = archs,
@@ -793,6 +812,7 @@ struct cpuArchDriver cpuDriverPPC64 = {
     .baseline   = virCPUppc64Baseline,
     .update     = virCPUppc64Update,
     .getModels  = virCPUppc64DriverGetModels,
+    .getVendorForModel = virCPUppc64GetVendorForModel,
     .convertLegacy = virCPUppc64ConvertLegacy,
     .dataIsIdentical = virCPUppc64DataIsIdentical,
 };
diff --git a/tests/domaincapsdata/qemu_4.2.0.ppc64.xml b/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
index 6d09c5ae4e..7093c35355 100644
--- a/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_4.2.0.ppc64.xml
@@ -40,9 +40,9 @@
       <model fallback='allow'>POWER8</model>
     </mode>
     <mode name='custom' supported='yes'>
-      <model usable='unknown' vendor='unknown'>POWER9</model>
-      <model usable='unknown' vendor='unknown'>POWER8</model>
-      <model usable='unknown' vendor='unknown'>POWER7</model>
+      <model usable='unknown' vendor='IBM'>POWER9</model>
+      <model usable='unknown' vendor='IBM'>POWER8</model>
+      <model usable='unknown' vendor='IBM'>POWER7</model>
     </mode>
   </cpu>
   <memoryBacking supported='yes'>
diff --git a/tests/domaincapsdata/qemu_5.0.0.ppc64.xml b/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
index 032a4f4e19..b944723885 100644
--- a/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_5.0.0.ppc64.xml
@@ -40,10 +40,10 @@
       <model fallback='allow'>POWER8</model>
     </mode>
     <mode name='custom' supported='yes'>
-      <model usable='unknown' vendor='unknown'>POWER10</model>
-      <model usable='unknown' vendor='unknown'>POWER9</model>
-      <model usable='unknown' vendor='unknown'>POWER8</model>
-      <model usable='unknown' vendor='unknown'>POWER7</model>
+      <model usable='unknown' vendor='IBM'>POWER10</model>
+      <model usable='unknown' vendor='IBM'>POWER9</model>
+      <model usable='unknown' vendor='IBM'>POWER8</model>
+      <model usable='unknown' vendor='IBM'>POWER7</model>
     </mode>
   </cpu>
   <memoryBacking supported='yes'>
diff --git a/tests/domaincapsdata/qemu_5.2.0.ppc64.xml b/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
index 570d88235b..71f47c8748 100644
--- a/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_5.2.0.ppc64.xml
@@ -40,10 +40,10 @@
       <model fallback='allow'>POWER8</model>
     </mode>
     <mode name='custom' supported='yes'>
-      <model usable='unknown' vendor='unknown'>POWER10</model>
-      <model usable='unknown' vendor='unknown'>POWER9</model>
-      <model usable='unknown' vendor='unknown'>POWER8</model>
-      <model usable='unknown' vendor='unknown'>POWER7</model>
+      <model usable='unknown' vendor='IBM'>POWER10</model>
+      <model usable='unknown' vendor='IBM'>POWER9</model>
+      <model usable='unknown' vendor='IBM'>POWER8</model>
+      <model usable='unknown' vendor='IBM'>POWER7</model>
     </mode>
   </cpu>
   <memoryBacking supported='yes'>
diff --git a/tests/domaincapsdata/qemu_6.2.0.ppc64.xml b/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
index c2fe03d227..bf2c679c51 100644
--- a/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_6.2.0.ppc64.xml
@@ -40,10 +40,10 @@
       <model fallback='allow'>POWER8</model>
     </mode>
     <mode name='custom' supported='yes'>
-      <model usable='unknown' vendor='unknown'>POWER10</model>
-      <model usable='unknown' vendor='unknown'>POWER9</model>
-      <model usable='unknown' vendor='unknown'>POWER8</model>
-      <model usable='unknown' vendor='unknown'>POWER7</model>
+      <model usable='unknown' vendor='IBM'>POWER10</model>
+      <model usable='unknown' vendor='IBM'>POWER9</model>
+      <model usable='unknown' vendor='IBM'>POWER8</model>
+      <model usable='unknown' vendor='IBM'>POWER7</model>
     </mode>
   </cpu>
   <memoryBacking supported='yes'>
diff --git a/tests/domaincapsdata/qemu_7.0.0.ppc64.xml b/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
index 06e713373e..8f6f9f57e1 100644
--- a/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
+++ b/tests/domaincapsdata/qemu_7.0.0.ppc64.xml
@@ -40,10 +40,10 @@
       <model fallback='allow'>POWER8</model>
     </mode>
     <mode name='custom' supported='yes'>
-      <model usable='unknown' vendor='unknown'>POWER10</model>
-      <model usable='unknown' vendor='unknown'>POWER9</model>
-      <model usable='unknown' vendor='unknown'>POWER8</model>
-      <model usable='unknown' vendor='unknown'>POWER7</model>
+      <model usable='unknown' vendor='IBM'>POWER10</model>
+      <model usable='unknown' vendor='IBM'>POWER9</model>
+      <model usable='unknown' vendor='IBM'>POWER8</model>
+      <model usable='unknown' vendor='IBM'>POWER7</model>
     </mode>
   </cpu>
   <memoryBacking supported='yes'>