qemu: Make virQEMUCapsProbeHostCPUForEmulator more generic

The function is renamed as virQEMUCapsProbeHostCPU and it does not get
the list of allowed CPU models from qemuCaps anymore. This is
responsibility is moved to the caller. The result is just a very thin
wrapper around virCPUGetHost mostly required mocking in tests.

The generic function is used in place of a direct call to virCPUGetHost
in virQEMUCapsInitHostCPUModel to make sure tests don't accidentally
probe host CPU.
Signed-off-by: NJiri Denemark <jdenemar@redhat.com>

src/qemu/qemu_capabilities.c

@@ -881,12 +881,10 @@ virQEMUCapsInitGuestFromBinary(virCapsPtr caps,
 
 
 virCPUDefPtr
-virQEMUCapsProbeHostCPUForEmulator(virArch hostArch,
-                                   virQEMUCapsPtr qemuCaps,
-                                   virDomainVirtType type)
+virQEMUCapsProbeHostCPU(virArch hostArch,
+                        virDomainCapsCPUModelsPtr models)
 {
-    return virCPUGetHost(hostArch, VIR_CPU_TYPE_GUEST, NULL,
-                         virQEMUCapsGetCPUDefinitions(qemuCaps, type));
+    return virCPUGetHost(hostArch, VIR_CPU_TYPE_GUEST, NULL, models);
 }
 
 
@@ -3057,7 +3055,8 @@ virQEMUCapsInitHostCPUModel(virQEMUCapsPtr qemuCaps,
     } else if (rc == 1) {
         VIR_DEBUG("No host CPU model info from QEMU; probing host CPU directly");
 
-        hostCPU = virQEMUCapsProbeHostCPUForEmulator(hostArch, qemuCaps, type);
+        hostCPU = virQEMUCapsProbeHostCPU(hostArch,
+                                          virQEMUCapsGetCPUDefinitions(qemuCaps, type));
         if (!hostCPU ||
             virCPUDefCopyModelFilter(cpu, hostCPU, true,
                                      virQEMUCapsCPUFilterFeatures,
@@ -3070,8 +3069,7 @@ virQEMUCapsInitHostCPUModel(virQEMUCapsPtr qemuCaps,
         goto error;
     } else if (type == VIR_DOMAIN_VIRT_KVM &&
                virCPUGetHostIsSupported(qemuCaps->arch)) {
-        if (!(fullCPU = virCPUGetHost(qemuCaps->arch, VIR_CPU_TYPE_GUEST,
-                                      NULL, NULL)))
+        if (!(fullCPU = virQEMUCapsProbeHostCPU(qemuCaps->arch, NULL)))
             goto error;
 
         if (!(cpuExpanded = virCPUDefCopy(cpu)) ||

src/qemu/qemu_capspriv.h

@@ -82,9 +82,8 @@ virQEMUCapsGetCPUModelX86Data(qemuMonitorCPUModelInfoPtr model,
                               bool migratable);
 
 virCPUDefPtr
-virQEMUCapsProbeHostCPUForEmulator(virArch hostArch,
-                                   virQEMUCapsPtr qemuCaps,
-                                   virDomainVirtType type) ATTRIBUTE_NOINLINE;
+virQEMUCapsProbeHostCPU(virArch hostArch,
+                        virDomainCapsCPUModelsPtr models) ATTRIBUTE_NOINLINE;
 
 void
 virQEMUCapsSetGICCapabilities(virQEMUCapsPtr qemuCaps,

tests/qemucpumock.c

@@ -27,9 +27,8 @@
 
 
 virCPUDefPtr
-virQEMUCapsProbeHostCPUForEmulator(virArch hostArch ATTRIBUTE_UNUSED,
-                                   virQEMUCapsPtr qemuCaps ATTRIBUTE_UNUSED,
-                                   virDomainVirtType type ATTRIBUTE_UNUSED)
+virQEMUCapsProbeHostCPU(virArch hostArch ATTRIBUTE_UNUSED,
+                        virDomainCapsCPUModelsPtr models ATTRIBUTE_UNUSED)
 {
     const char *model = getenv("VIR_TEST_MOCK_FAKE_HOST_CPU");