[Qemu-devel] [PATCH v2 20/45] apic-common: make "id" property a uint32

[Marc-André Lureau]

Change suggested by Markus Armbruster:

This one's a bit of a mess.

The getter and setter of TYPE_APIC_COMMON property "id" are
apic_common_get_id() and apic_common_set_id().

apic_common_get_id() reads either APICCommonState member uint32_t
initial_apic_id or uint8_t id into an int64_t local variable.  It then
passes this variable to visit_type_int().

apic_common_set_id() uses visit_type_int() to read the value into a
local variable, which it then assigns both to initial_apic_id and id.

While the state backing the property is two unsigned members, 8 and 32
bits wide, the actual visitor is 64 bits signed.

cpu->apic_id is uint32_t.

qdev_prop_set_uint32() isn't really wrong, because any uint32_t value is
also a valid int64_t value.

qdev_prop_set_int32() implicitly converts cpu->apic_id from uint32_t
to int32_t.  Perhaps that's even okay, but I don't care, I want this
mess cleaned up

Change getter and setter to use visit_type_uint32().  Then everything's
uint32_t, except for @id.

Signed-off-by: Marc-André Lureau <address@hidden>
---
 hw/intc/apic_common.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/hw/intc/apic_common.c b/hw/intc/apic_common.c
index 1ef56f8d10..e1ac33042f 100644
--- a/hw/intc/apic_common.c
+++ b/hw/intc/apic_common.c
@@ -450,10 +450,10 @@ static void apic_common_get_id(Object *obj, Visitor *v, 
const char *name,
                                void *opaque, Error **errp)
 {
     APICCommonState *s = APIC_COMMON(obj);
-    int64_t value;
+    uint32_t value;
 
     value = s->apicbase & MSR_IA32_APICBASE_EXTD ? s->initial_apic_id : s->id;
-    visit_type_int(v, name, &value, errp);
+    visit_type_uint32(v, name, &value, errp);
 }
 
 static void apic_common_set_id(Object *obj, Visitor *v, const char *name,
@@ -462,14 +462,14 @@ static void apic_common_set_id(Object *obj, Visitor *v, 
const char *name,
     APICCommonState *s = APIC_COMMON(obj);
     DeviceState *dev = DEVICE(obj);
     Error *local_err = NULL;
-    int64_t value;
+    uint32_t value;
 
     if (dev->realized) {
         qdev_prop_set_after_realize(dev, name, errp);
         return;
     }
 
-    visit_type_int(v, name, &value, &local_err);
+    visit_type_uint32(v, name, &value, &local_err);
     if (local_err) {
         error_propagate(errp, local_err);
         return;
@@ -484,7 +484,7 @@ static void apic_common_initfn(Object *obj)
     APICCommonState *s = APIC_COMMON(obj);
 
     s->id = s->initial_apic_id = -1;
-    object_property_add(obj, "id", "int",
+    object_property_add(obj, "id", "uint32",
                         apic_common_get_id,
                         apic_common_set_id, NULL, NULL, NULL);
 }
-- 
2.13.0.91.g00982b8dd