None machine accepts any CPU types, even some CPUs may have the
bus_type.
To address this, set topo_tree_supported as true for none machine, then
none machine will have a CPU slot with CPU bus to collect any topology
device with bus_type specified.
And since arch_id_topo_level is not set, the topology devices will be
directly inserted under the CPU slot without being organized into a tree
structure.
For the CPUs without bus_type, topo_tree_supported will not affect them.
Signed-off-by: Zhao Liu <zhao1.liu@xxxxxxxxx>
---
hw/core/null-machine.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/core/null-machine.c b/hw/core/null-machine.c
index f586a4bef543..101649f3e8c1 100644
--- a/hw/core/null-machine.c
+++ b/hw/core/null-machine.c
@@ -54,6 +54,11 @@ static void machine_none_machine_init(MachineClass *mc)
mc->no_floppy = 1;
mc->no_cdrom = 1;
mc->no_sdcard = 1;
+ /*
+ * For compatibility with arches and CPUs that already
+ * support topology tree.
+ */
+ mc->smp_props.topo_tree_supported = true;
}
DEFINE_MACHINE("none", machine_none_machine_init)
--
2.34.1
