[libvirt] [PATCH 6/7] qemu: Pass migratable host model to virCPUUpdate

[Jiri Denemark]

This will allow us to drop feature filtering from virCPUUpdate where it
was just a hack.

Signed-off-by: Jiri Denemark <jdenemar at redhat.com>
---
 src/qemu/qemu_capabilities.c | 19 ++++++++++++++-----
 src/qemu/qemu_capabilities.h |  3 ++-
 src/qemu/qemu_command.c      |  2 +-
 src/qemu/qemu_process.c      |  4 ++--
 tests/cputest.c              |  7 ++++++-
 5 files changed, 25 insertions(+), 10 deletions(-)

diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index b426a5abc..d4aace56d 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -2442,12 +2442,20 @@ virQEMUCapsGetCPUDefinitions(virQEMUCapsPtr qemuCaps,
 
 virCPUDefPtr
 virQEMUCapsGetHostModel(virQEMUCapsPtr qemuCaps,
-                        virDomainVirtType type)
+                        virDomainVirtType type,
+                        bool migratable)
 {
+    virQEMUCapsCPUModelPtr model;
+
     if (type == VIR_DOMAIN_VIRT_KVM)
-        return qemuCaps->hostCPU.kvm.full;
+        model = &qemuCaps->hostCPU.kvm;
     else
-        return qemuCaps->hostCPU.tcg.full;
+        model = &qemuCaps->hostCPU.tcg;
+
+    if (migratable)
+        return model->migratable;
+    else
+        return model->full;
 }
 
 
@@ -2465,7 +2473,7 @@ virQEMUCapsIsCPUModeSupported(virQEMUCapsPtr qemuCaps,
                virQEMUCapsGuestIsNative(caps->host.arch, qemuCaps->arch);
 
     case VIR_CPU_MODE_HOST_MODEL:
-        return !!virQEMUCapsGetHostModel(qemuCaps, type);
+        return !!virQEMUCapsGetHostModel(qemuCaps, type, false);
 
     case VIR_CPU_MODE_CUSTOM:
         if (type == VIR_DOMAIN_VIRT_KVM)
@@ -5500,7 +5508,8 @@ virQEMUCapsFillDomainCPUCaps(virCapsPtr caps,
 
     if (virQEMUCapsIsCPUModeSupported(qemuCaps, caps, domCaps->virttype,
                                       VIR_CPU_MODE_HOST_MODEL)) {
-        virCPUDefPtr cpu = virQEMUCapsGetHostModel(qemuCaps, domCaps->virttype);
+        virCPUDefPtr cpu = virQEMUCapsGetHostModel(qemuCaps, domCaps->virttype,
+                                                   false);
         domCaps->cpu.hostModel = virCPUDefCopy(cpu);
     }
 
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index d44682f2a..410fa28b2 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -450,7 +450,8 @@ int virQEMUCapsGetCPUDefinitions(virQEMUCapsPtr qemuCaps,
                                  char ***names,
                                  size_t *count);
 virCPUDefPtr virQEMUCapsGetHostModel(virQEMUCapsPtr qemuCaps,
-                                     virDomainVirtType type);
+                                     virDomainVirtType type,
+                                     bool migratable);
 bool virQEMUCapsIsCPUModeSupported(virQEMUCapsPtr qemuCaps,
                                    virCapsPtr caps,
                                    virDomainVirtType type,
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 64d2d7105..c1a8ba065 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6886,7 +6886,7 @@ qemuBuildCpuCommandLine(virCommandPtr cmd,
             if (def->cpu->mode == VIR_CPU_MODE_CUSTOM)
                 cpuDef = def->cpu;
             else if (def->cpu->mode == VIR_CPU_MODE_HOST_PASSTHROUGH)
-                cpuDef = virQEMUCapsGetHostModel(qemuCaps, def->virtType);
+                cpuDef = virQEMUCapsGetHostModel(qemuCaps, def->virtType, false);
 
             if (cpuDef) {
                 int svm = virCPUCheckFeature(def->os.arch, cpuDef, "svm");
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index a20beb13c..07d0883c3 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -5300,12 +5300,12 @@ qemuProcessUpdateGuestCPU(virDomainDefPtr def,
 
     if (def->cpu->check == VIR_CPU_CHECK_PARTIAL &&
         virCPUCompare(caps->host.arch,
-                      virQEMUCapsGetHostModel(qemuCaps, def->virtType),
+                      virQEMUCapsGetHostModel(qemuCaps, def->virtType, false),
                       def->cpu, true) < 0)
         return -1;
 
     if (virCPUUpdate(def->os.arch, def->cpu,
-                     virQEMUCapsGetHostModel(qemuCaps, def->virtType)) < 0)
+                     virQEMUCapsGetHostModel(qemuCaps, def->virtType, true)) < 0)
         goto cleanup;
 
     if (virQEMUCapsGetCPUDefinitions(qemuCaps, def->virtType,
diff --git a/tests/cputest.c b/tests/cputest.c
index 8c07cf4f6..efa891dc1 100644
--- a/tests/cputest.c
+++ b/tests/cputest.c
@@ -393,6 +393,7 @@ cpuTestUpdate(const void *arg)
     const struct data *data = arg;
     int ret = -1;
     virCPUDefPtr host = NULL;
+    virCPUDefPtr migHost = NULL;
     virCPUDefPtr cpu = NULL;
     char *result = NULL;
 
@@ -400,7 +401,10 @@ cpuTestUpdate(const void *arg)
         !(cpu = cpuTestLoadXML(data->arch, data->name)))
         goto cleanup;
 
-    if (virCPUUpdate(host->arch, cpu, host) < 0)
+    if (!(migHost = virCPUCopyMigratable(data->arch, host)))
+        goto cleanup;
+
+    if (virCPUUpdate(host->arch, cpu, migHost) < 0)
         goto cleanup;
 
     if (virAsprintf(&result, "%s+%s", data->host, data->name) < 0)
@@ -411,6 +415,7 @@ cpuTestUpdate(const void *arg)
  cleanup:
     virCPUDefFree(host);
     virCPUDefFree(cpu);
+    virCPUDefFree(migHost);
     VIR_FREE(result);
     return ret;
 }
-- 
2.12.0