[v2,2/2] spapr: Add kvm-type property

The kvm-type machine option was left out when MachineState was
introduced, preventing the kvm-type option from being used. Add the
missing property to the sPAPR machine class, so it can be used.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
---
Changes v1 -> v2:
 * Add property only to the sPAPR machine class

Tested in a x86 machine only. Help would be welcome to test it on a
ppc64 machine supporting KVM.

Before applying this patch:

    $ qemu-system-ppc64 -machine pseries,accel=kvm,kvm-type=HV
    qemu-system-ppc64: Property '.kvm-type' not found

After applying this patch:

    $ qemu-system-ppc64 -machine pseries,accel=kvm,kvm-type=HV
    KVM not supported for this target
    No accelerator found!
---
 hw/ppc/spapr.c | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

Eduardo Habkost <ehabkost@redhat.com> writes:

> The kvm-type machine option was left out when MachineState was
> introduced, preventing the kvm-type option from being used. Add the
> missing property to the sPAPR machine class, so it can be used.
>
> Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Tested-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

> ---
> Changes v1 -> v2:
>  * Add property only to the sPAPR machine class
>
> Tested in a x86 machine only. Help would be welcome to test it on a
> ppc64 machine supporting KVM.
>
> Before applying this patch:
>
>     $ qemu-system-ppc64 -machine pseries,accel=kvm,kvm-type=HV
>     qemu-system-ppc64: Property '.kvm-type' not found
>
> After applying this patch:
>
>     $ qemu-system-ppc64 -machine pseries,accel=kvm,kvm-type=HV
>     KVM not supported for this target
>     No accelerator found!
> ---
>  hw/ppc/spapr.c | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
>
> diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
> index 30764aa..82b1ca8 100644
> --- a/hw/ppc/spapr.c
> +++ b/hw/ppc/spapr.c
> @@ -96,6 +96,9 @@ typedef struct SPAPRMachine SPAPRMachine;
>  struct SPAPRMachine {
>      /*< private >*/
>      MachineState parent_obj;
> +
> +    /*< public >*/
> +    char *kvm_type;
>  };
>  
>  
> @@ -1489,6 +1492,27 @@ static char *spapr_get_fw_dev_path(FWPathProvider *p, BusState *bus,
>      return NULL;
>  }
>  
> +static char *spapr_get_kvm_type(Object *obj, Error **errp)
> +{
> +    SPAPRMachine *sm = SPAPR_MACHINE(obj);
> +
> +    return g_strdup(sm->kvm_type);
> +}
> +
> +static void spapr_set_kvm_type(Object *obj, const char *value, Error **errp)
> +{
> +    SPAPRMachine *sm = SPAPR_MACHINE(obj);
> +
> +    g_free(sm->kvm_type);
> +    sm->kvm_type = g_strdup(value);
> +}
> +
> +static void spapr_machine_initfn(Object *obj)
> +{
> +    object_property_add_str(obj, "kvm-type",
> +                            spapr_get_kvm_type, spapr_set_kvm_type, NULL);
> +}
> +
>  static void spapr_machine_class_init(ObjectClass *oc, void *data)
>  {
>      MachineClass *mc = MACHINE_CLASS(oc);
> @@ -1512,6 +1536,7 @@ static const TypeInfo spapr_machine_info = {
>      .name          = TYPE_SPAPR_MACHINE,
>      .parent        = TYPE_MACHINE,
>      .instance_size = sizeof(SPAPRMachine),
> +    .instance_init = spapr_machine_initfn,
>      .class_init    = spapr_machine_class_init,
>      .interfaces = (InterfaceInfo[]) {
>          { TYPE_FW_PATH_PROVIDER },
> -- 
> 1.9.0