From 7bf633c53f66ea9b5666ed246de4122152910f54 Mon Sep 17 00:00:00 2001 From: Bibo Mao Date: Mon, 10 Feb 2025 14:56:01 +0800 Subject: hw/loongarch/virt: Add basic cpu plug interface framework Add basic cpu hotplug interface framework, cpu hotplug interface is stub function and only framework is added here. Co-developed-by: Xianglai Li Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) (limited to 'hw/loongarch/virt.c') diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 2bbbbbfbcf..2b4b60f718 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -816,6 +816,26 @@ static int virt_get_arch_id_from_topo(MachineState *ms, LoongArchCPUTopo *topo) return arch_id; } +static void virt_cpu_pre_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ +} + +static void virt_cpu_unplug_request(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ +} + +static void virt_cpu_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ +} + +static void virt_cpu_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ +} + static bool memhp_type_supported(DeviceState *dev) { /* we only support pc dimm now */ @@ -834,6 +854,8 @@ static void virt_device_pre_plug(HotplugHandler *hotplug_dev, { if (memhp_type_supported(dev)) { virt_mem_pre_plug(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) { + virt_cpu_pre_plug(hotplug_dev, dev, errp); } } @@ -852,6 +874,8 @@ static void virt_device_unplug_request(HotplugHandler *hotplug_dev, { if (memhp_type_supported(dev)) { virt_mem_unplug_request(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) { + virt_cpu_unplug_request(hotplug_dev, dev, errp); } } @@ -870,6 +894,8 @@ static void virt_device_unplug(HotplugHandler *hotplug_dev, { if (memhp_type_supported(dev)) { virt_mem_unplug(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) { + virt_cpu_unplug(hotplug_dev, dev, errp); } } @@ -897,6 +923,8 @@ static void virt_device_plug_cb(HotplugHandler *hotplug_dev, } } else if (memhp_type_supported(dev)) { virt_mem_plug(hotplug_dev, dev, errp); + } else if (object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU)) { + virt_cpu_plug(hotplug_dev, dev, errp); } } @@ -906,6 +934,7 @@ static HotplugHandler *virt_get_hotplug_handler(MachineState *machine, MachineClass *mc = MACHINE_GET_CLASS(machine); if (device_is_dynamic_sysbus(mc, dev) || + object_dynamic_cast(OBJECT(dev), TYPE_LOONGARCH_CPU) || object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) || memhp_type_supported(dev)) { return HOTPLUG_HANDLER(machine); -- cgit 1.4.1