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Fix global property and -cpu handling bug

Browse source 
This bug fix was supposed to be applied just after 2.8.0 was
 released, but it slipped through the cracks. Sending it now for
 the next -rc.
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Merge remote-tracking branch 'remotes/ehabkost/tags/machine-pull-request' into staging

Fix global property and -cpu handling bug

This bug fix was supposed to be applied just after 2.8.0 was
released, but it slipped through the cracks. Sending it now for
the next -rc.

# gpg: Signature made Tue 14 Mar 2017 20:04:50 GMT
# gpg:                using RSA key 0x2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/machine-pull-request:
  machine: Convert abstract typename on compat_props to subclass names

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Peter Maydell 2017-03-15 13:07:07 +00:00
parent d84f714eaf 0bcba41fe3
commit 926e368388
1 changed files with 36 additions and 3 deletions
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39
hw/core/machine.c
View file

@ -585,11 +585,31 @@ static void machine_class_finalize(ObjectClass *klass, void *data)
g_free(mc->name);
}
static void register_compat_prop(const char *driver,
const char *property,
const char *value)
{
GlobalProperty *p = g_new0(GlobalProperty, 1);
/* Machine compat_props must never cause errors: */
p->errp = &error_abort;
p->driver = driver;
p->property = property;
p->value = value;
qdev_prop_register_global(p);
}
static void machine_register_compat_for_subclass(ObjectClass *oc, void *opaque)
{
GlobalProperty *p = opaque;
register_compat_prop(object_class_get_name(oc), p->property, p->value);
}
void machine_register_compat_props(MachineState *machine)
{
MachineClass *mc = MACHINE_GET_CLASS(machine);
int i;
GlobalProperty *p;
ObjectClass *oc;
if (!mc->compat_props) {
return;
@ -597,9 +617,22 @@ void machine_register_compat_props(MachineState *machine)
for (i = 0; i < mc->compat_props->len; i++) {
p = g_array_index(mc->compat_props, GlobalProperty *, i);
/* Machine compat_props must never cause errors: */
p->errp = &error_abort;
qdev_prop_register_global(p);
oc = object_class_by_name(p->driver);
if (oc && object_class_is_abstract(oc)) {
/* temporary hack to make sure we do not override
* globals set explicitly on -global: if an abstract class
* is on compat_props, register globals for all its
* non-abstract subtypes instead.
*
* This doesn't solve the problem for cases where
* a non-abstract typename mentioned on compat_props
* has subclasses, like spapr-pci-host-bridge.
*/
object_class_foreach(machine_register_compat_for_subclass,
p->driver, false, p);
} else {
register_compat_prop(p->driver, p->property, p->value);
}
}
}