[libvirt] [PATCH 3/3] target-i386: Implement arch_query_host_cpu_info()
Return information on the host CPU using the "host" CPU model.
Signed-off-by: Eduardo Habkost <ehabkost(a)redhat.com>
---
target-i386/cpu.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 64 insertions(+)
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 3d3635d..06b0b99 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -30,6 +30,7 @@
#include "qemu/config-file.h"
#include "qapi/qmp/qerror.h"
+#include "qom/qom-qobject.h"
#include "qapi-types.h"
#include "qapi-visit.h"
#include "qapi/visitor.h"
@@ -2222,6 +2223,69 @@ CpuDefinitionInfoList *arch_query_cpu_definitions(Error **errp)
return cpu_list;
}
+/* Return host CPU info by instantiating a "host" CPU object,
+ * and returning all the default values for QOM properties
+ */
+void arch_query_host_cpu_info(HostCPUInfo *r, bool migratable, Error **errp)
+{
+ Object *obj = NULL;
+ ObjectPropertyIterator iter;
+ ObjectProperty *prop;
+ QDict *propdict = NULL;
+ Error *err = NULL;
+
+ /* Host CPU information is returned only in KVM mode, by now */
+ if (!kvm_enabled()) {
+ goto out;
+ }
+
+ obj = object_new(X86_CPU_TYPE_NAME("host"));
+
+ object_property_set_bool(obj, migratable, "migratable", &err);
+ if (err) {
+ goto out;
+ }
+
+ x86_cpu_load_host_data(X86_CPU(obj));
+
+ propdict = qdict_new();
+
+ object_property_iter_init(&iter, obj);
+ while ((prop = object_property_iter_next(&iter))) {
+ QObject *v;
+
+ /* Skip properties that aren't useful for the query because
+ * they don't make sense here:
+ * - "realized" doesn't make sense because we never realize
+ * the CPU object above.
+ * - "filtered-features" doesn't make sense because we
+ * never filter the feature list (as it is done inside
+ * realizefn).
+ */
+ if (!strcmp(prop->name, "realized") ||
+ !strcmp(prop->name, "filtered-features")) {
+ continue;
+ }
+
+ v = object_property_get_qobject(obj, prop->name, &err);
+ if (err) {
+ goto out;
+ }
+ qdict_put_obj(propdict, prop->name, v);
+ }
+
+ r->has_qom_properties = true;
+ r->qom_properties = QOBJECT(propdict);
+
+out:
+ object_unref(obj);
+ if (err) {
+ qobject_decref(QOBJECT(propdict));
+ error_propagate(errp, err);
+ }
+ return;
+}
+
static uint32_t x86_cpu_get_supported_feature_word(FeatureWord w,
bool migratable_only)
{
--
2.5.5