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s390x: fix realize inheritance for kvm-flic

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Commit f6f4ce4211 ("s390x: add property adapter_routes_max_batch",
2016-12-09) introduces a common realize (intended to be common for all
the subclasses) for flic, but fails to make sure the kvm-flic which had
its own is actually calling this common realize.

This omission fortunately does not result in a grave problem. The common
realize was only supposed to catch a possible programming mistake by
validating a value of a property set via the compat machine macros. Since
there was no programming mistake we don't need this fixed for stable.

Let's fix this problem by making sure kvm flic honors the realize of its
parent class.

Let us also improve on the error message we would hypothetically emit
when the validation fails.

Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Fixes: f6f4ce4211 ("s390x: add property adapter_routes_max_batch")
Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com>
Reviewed-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
This commit is contained in:
Halil Pasic 2017-06-14 15:39:48 +02:00 committed by Christian Borntraeger
parent f62f210943
commit 5cbab1bfde
2 changed files with 19 additions and 2 deletions
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4
hw/intc/s390_flic.c
View File

@ -101,8 +101,8 @@ static void s390_flic_common_realize(DeviceState *dev, Error **errp)
uint32_t max_batch = S390_FLIC_COMMON(dev)->adapter_routes_max_batch;
if (max_batch > ADAPTER_ROUTES_MAX_GSI) {
error_setg(errp, "flic adapter_routes_max_batch too big"
"%d (%d allowed)", max_batch, ADAPTER_ROUTES_MAX_GSI);
error_setg(errp, "flic property adapter_routes_max_batch too big"
" (%d > %d)", max_batch, ADAPTER_ROUTES_MAX_GSI);
}
}

17
hw/intc/s390_flic_kvm.c
View File

@ -392,6 +392,17 @@ static const VMStateDescription kvm_s390_flic_vmstate = {
}
};
typedef struct KVMS390FLICStateClass {
S390FLICStateClass parent_class;
DeviceRealize parent_realize;
} KVMS390FLICStateClass;
#define KVM_S390_FLIC_GET_CLASS(obj) \
OBJECT_GET_CLASS(KVMS390FLICStateClass, (obj), TYPE_KVM_S390_FLIC)
#define KVM_S390_FLIC_CLASS(klass) \
OBJECT_CLASS_CHECK(KVMS390FLICStateClass, (klass), TYPE_KVM_S390_FLIC)
static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
{
KVMS390FLICState *flic_state = KVM_S390_FLIC(dev);
@ -400,6 +411,10 @@ static void kvm_s390_flic_realize(DeviceState *dev, Error **errp)
int ret;
Error *errp_local = NULL;
KVM_S390_FLIC_GET_CLASS(dev)->parent_realize(dev, &errp_local);
if (errp_local) {
goto fail;
}
flic_state->fd = -1;
if (!kvm_check_extension(kvm_state, KVM_CAP_DEVICE_CTRL)) {
error_setg_errno(&errp_local, errno, "KVM is missing capability"
@ -454,6 +469,7 @@ static void kvm_s390_flic_class_init(ObjectClass *oc, void *data)
DeviceClass *dc = DEVICE_CLASS(oc);
S390FLICStateClass *fsc = S390_FLIC_COMMON_CLASS(oc);
KVM_S390_FLIC_CLASS(oc)->parent_realize = dc->realize;
dc->realize = kvm_s390_flic_realize;
dc->vmsd = &kvm_s390_flic_vmstate;
dc->reset = kvm_s390_flic_reset;
@ -468,6 +484,7 @@ static const TypeInfo kvm_s390_flic_info = {
.name = TYPE_KVM_S390_FLIC,
.parent = TYPE_S390_FLIC_COMMON,
.instance_size = sizeof(KVMS390FLICState),
.class_size = sizeof(KVMS390FLICStateClass),
.class_init = kvm_s390_flic_class_init,
};