[Qemu-devel] [PATCH 15/22] target-i386: introduce vendor-override property

[Igor Mammedov <imammedo@redhat.com>]

currently 'cpuid_vendor_override' can be set only via cmd line cpu_model
string. But setting it in 'vendor' property prevents using 'vendor'
property on its own without setting cpuid_vendor_override.

So fix/remove enabling cpuid_vendor_override from "vendor" property setter.
It's up-to cpu_model string parser to maintain legacy behavior when user
overrides vendor on command line.

v2:
  - convert cpuid_vendor_override to bool to reflect its real usage

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 target-i386/cpu.c |   31 +++++++++++++++++++++++++++++--
 target-i386/cpu.h |    2 +-
 2 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index d36410a..4f333e9 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -1133,7 +1133,6 @@ static void x86_cpuid_set_vendor(Object *obj, const char *value,
         env->cpuid_vendor2 |= ((uint8_t)value[i + 4]) << (8 * i);
         env->cpuid_vendor3 |= ((uint8_t)value[i + 8]) << (8 * i);
     }
-    env->cpuid_vendor_override = 1;
 }
 
 static char *x86_cpuid_get_model_id(Object *obj, Error **errp)
@@ -1307,6 +1306,31 @@ static void x86_cpuid_set_enforce(Object *obj, Visitor *v, void *opaque,
     object_property_set_bool(obj, value, "check", errp);
 }
 
+static void
+x86_cpuid_get_vendor_override(Object *obj, Visitor *v, void *opaque,
+                                         const char *name, Error **errp)
+{
+    X86CPU *cpu = X86_CPU(obj);
+    CPUX86State *env = &cpu->env;
+
+    visit_type_bool(v, &env->cpuid_vendor_override, name, errp);
+}
+
+static void
+x86_cpuid_set_vendor_override(Object *obj, Visitor *v, void *opaque,
+                                         const char *name, Error **errp)
+{
+    X86CPU *cpu = X86_CPU(obj);
+    CPUX86State *env = &cpu->env;
+    bool value;
+
+    visit_type_bool(v, &value, name, errp);
+    if (error_is_set(errp)) {
+        return;
+    }
+    env->cpuid_vendor_override = value;
+}
+
 static void cpudef_2_x86_cpu(X86CPU *cpu, x86_def_t *def, Error **errp)
 {
     CPUX86State *env = &cpu->env;
@@ -1320,7 +1344,7 @@ static void cpudef_2_x86_cpu(X86CPU *cpu, x86_def_t *def, Error **errp)
         env->cpuid_vendor2 = CPUID_VENDOR_INTEL_2;
         env->cpuid_vendor3 = CPUID_VENDOR_INTEL_3;
     }
-    env->cpuid_vendor_override = def->vendor_override;
+    object_property_set_bool(OBJECT(cpu), true, "vendor-override", errp);
     object_property_set_int(OBJECT(cpu), def->level, "level", errp);
     object_property_set_int(OBJECT(cpu), def->family, "family", errp);
     object_property_set_int(OBJECT(cpu), def->model, "model", errp);
@@ -2128,6 +2152,9 @@ static void x86_cpu_initfn(Object *obj)
     object_property_add_str(obj, "vendor",
                             x86_cpuid_get_vendor,
                             x86_cpuid_set_vendor, NULL);
+    object_property_add(obj, "vendor-override", "bool",
+                        x86_cpuid_get_vendor_override,
+                        x86_cpuid_set_vendor_override, NULL, NULL, NULL);
     object_property_add_str(obj, "model-id",
                             x86_cpuid_get_model_id,
                             x86_cpuid_set_model_id, NULL);
diff --git a/target-i386/cpu.h b/target-i386/cpu.h
index 4995084..4f525ee 100644
--- a/target-i386/cpu.h
+++ b/target-i386/cpu.h
@@ -774,7 +774,7 @@ typedef struct CPUX86State {
     uint32_t cpuid_ext2_features;
     uint32_t cpuid_ext3_features;
     uint32_t cpuid_apic_id;
-    int cpuid_vendor_override;
+    bool cpuid_vendor_override;
     /* Store the results of Centaur's CPUID instructions */
     uint32_t cpuid_xlevel2;
     uint32_t cpuid_ext4_features;
-- 
1.7.1