f4bf56fb78
QEMU will assert on vhost-user backed virtio device hotplug if QEMU is using more RAM regions than VHOST_MEMORY_MAX_NREGIONS (for example if it were started with a lot of DIMM devices). Fix it by returning error instead of asserting and let callers of vhost_set_mem_table() handle error condition gracefully. Cc: qemu-stable@nongnu.org Signed-off-by: Igor Mammedov <imammedo@redhat.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>