If we do not configure numa option, memory hotplug should work as well. It should not depend on numa option.
Steps to reproduce: (1) Start VM: qemu-kvm -m 1024,slots=4,maxmem=8G (2) Hotplug memory It will fail and reports: "'DIMM property node has value 0' which exceeds the number of numa nodes: 0" Signed-off-by: zhanghailiang <zhang.zhanghaili...@huawei.com> --- hw/mem/pc-dimm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index 5bfc5b7..a800ea7 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -252,7 +252,7 @@ static void pc_dimm_realize(DeviceState *dev, Error **errp) error_setg(errp, "'" PC_DIMM_MEMDEV_PROP "' property is not set"); return; } - if (dimm->node >= nb_numa_nodes) { + if ((nb_numa_nodes > 0) && (dimm->node >= nb_numa_nodes)) { error_setg(errp, "'DIMM property " PC_DIMM_NODE_PROP " has value %" PRIu32 "' which exceeds the number of numa nodes: %d", dimm->node, nb_numa_nodes); -- 1.7.12.4