spapr: enable PHB hotplug for default pseries machine type

The 'dr_phb_enabled' field of that class can be set as part of
machine-specific init code. It will be used to conditionally
enable creation of DRC objects and device-tree description to
facilitate hotplug of PHBs.

Since we can't migrate this state to older machine types,
default the option to true and disable it for older machine
types.

Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <155059673433.1466090.6188091133769611501.stgit@bahia.lab.toulouse-stg.fr.ibm.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 7422c05254941a68b8b742a41fb807f0f9bdcf3a..5d8b8c9e53cfb0ebb5cbf3299f740c24a865858f 100644 (file)
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -4290,6 +4290,7 @@ static void spapr_machine_class_init(ObjectClass *oc, void *data)
     smc->default_caps.caps[SPAPR_CAP_NESTED_KVM_HV] = SPAPR_CAP_OFF;
     spapr_caps_add_properties(smc, &error_abort);
     smc->irq = &spapr_irq_xics;
+    smc->dr_phb_enabled = true;
 }
 
 static const TypeInfo spapr_machine_info = {
@@ -4361,6 +4362,7 @@ static void spapr_machine_3_1_class_options(MachineClass *mc)
 
     mc->default_cpu_type = POWERPC_CPU_TYPE_NAME("power8_v2.0");
     smc->update_dt_enabled = false;
+    smc->dr_phb_enabled = false;
 }
 
 DEFINE_SPAPR_MACHINE(3_1, "3.1", false);