[Qemu-ppc] [PATCHv5 for 2.9 4/6] pseries: Enable HPT resizing for 2.9

[David Gibson]

We've now implemented a PAPR extensions which allows PAPR guests (i.e.
"pseries" machine type) to resize their hash page table during runtime.

However, that extension is only enabled if explicitly chosen on the
command line.  This patch enables it by default for spapr-2.9, but leaves
it disabled (by default) for older machine types.

Signed-off-by: David Gibson <address@hidden>
Reviewed-by: Laurent Vivier <address@hidden>
Reviewed-by: Suraj Jitindar Singh <address@hidden>
---
 hw/ppc/spapr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c
index 129b7d2..201eb1f 100644
--- a/hw/ppc/spapr.c
+++ b/hw/ppc/spapr.c
@@ -2792,7 +2792,7 @@ static void spapr_machine_class_init(ObjectClass *oc, 
void *data)
 
     smc->dr_lmb_enabled = true;
     smc->tcg_default_cpu = "POWER8";
-    smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED;
+    smc->resize_hpt_default = SPAPR_RESIZE_HPT_ENABLED;
     mc->query_hotpluggable_cpus = spapr_query_hotpluggable_cpus;
     fwc->get_dev_path = spapr_get_fw_dev_path;
     nc->nmi_monitor_handler = spapr_nmi;
@@ -2873,8 +2873,11 @@ static void 
spapr_machine_2_8_instance_options(MachineState *machine)
 
 static void spapr_machine_2_8_class_options(MachineClass *mc)
 {
+    sPAPRMachineClass *smc = SPAPR_MACHINE_CLASS(mc);
+
     spapr_machine_2_9_class_options(mc);
     SET_MACHINE_COMPAT(mc, SPAPR_COMPAT_2_8);
+    smc->resize_hpt_default = SPAPR_RESIZE_HPT_DISABLED;
 }
 
 DEFINE_SPAPR_MACHINE(2_8, "2.8", false);
-- 
2.9.3