qemu_capabilities: Inroduce virQEMUCapsGetCPUModelX86Data

The code for transforming qemuMonitorCPUModelInfo data from QEMU into
virCPUDefPtr consumable by virCPU* APIs was hidden inside
virQEMUCapsInitCPUModelX86. This patch moves it into a new function to
make it usable in tests.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>

src/qemu/qemu_capabilities.c

@@ -2839,28 +2839,17 @@ virQEMUCapsInitCPUModelS390(virQEMUCapsPtr qemuCaps,
 }
 
 
-/**
+virCPUDataPtr
- * Returns  0 when host CPU model provided by QEMU was filled in qemuCaps,
+virQEMUCapsGetCPUModelX86Data(qemuMonitorCPUModelInfoPtr model,
- *          1 when the caller should fall back to using virCapsPtr->host.cpu,
- *         -1 on error.
- */
-static int
-virQEMUCapsInitCPUModelX86(virQEMUCapsPtr qemuCaps,
-                           virDomainVirtType type,
-                           qemuMonitorCPUModelInfoPtr model,
-                           virCPUDefPtr cpu,
                               bool migratable)
 {
-    virCPUDataPtr data = NULL;
     unsigned long long sigFamily = 0;
     unsigned long long sigModel = 0;
     unsigned long long sigStepping = 0;
-    int ret = -1;
+    virCPUDataPtr data = NULL;
+    virCPUDataPtr ret = NULL;
     size_t i;
 
-    if (!model)
-        return 1;
-
     if (!(data = virCPUDataNew(VIR_ARCH_X86_64)))
         goto cleanup;
 
@@ -2901,6 +2890,35 @@ virQEMUCapsInitCPUModelX86(virQEMUCapsPtr qemuCaps,
     if (virCPUx86DataSetSignature(data, sigFamily, sigModel, sigStepping) < 0)
         goto cleanup;
 
+    VIR_STEAL_PTR(ret, data);
+
+ cleanup:
+    virCPUDataFree(data);
+    return ret;
+}
+
+
+/**
+ * Returns  0 when host CPU model provided by QEMU was filled in qemuCaps,
+ *          1 when the caller should fall back to using virCapsPtr->host.cpu,
+ *         -1 on error.
+ */
+static int
+virQEMUCapsInitCPUModelX86(virQEMUCapsPtr qemuCaps,
+                           virDomainVirtType type,
+                           qemuMonitorCPUModelInfoPtr model,
+                           virCPUDefPtr cpu,
+                           bool migratable)
+{
+    virCPUDataPtr data = NULL;
+    int ret = -1;
+
+    if (!model)
+        return 1;
+
+    if (!(data = virQEMUCapsGetCPUModelX86Data(model, migratable)))
+        goto cleanup;
+
     if (cpuDecode(cpu, data, virQEMUCapsGetCPUDefinitions(qemuCaps, type)) < 0)
         goto cleanup;
 

src/qemu/qemu_capspriv.h

@@ -73,6 +73,10 @@ virQEMUCapsSetCPUModelInfo(virQEMUCapsPtr qemuCaps,
                            virDomainVirtType type,
                            qemuMonitorCPUModelInfoPtr modelInfo);
 
+virCPUDataPtr
+virQEMUCapsGetCPUModelX86Data(qemuMonitorCPUModelInfoPtr model,
+                              bool migratable);
+
 virCPUDefPtr
 virQEMUCapsProbeHostCPUForEmulator(virArch hostArch,
                                    virQEMUCapsPtr qemuCaps,