From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731377982296944.1966958731657; Mon, 11 Nov 2024 18:19:42 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTm-0007Cn-Du; Mon, 11 Nov 2024 21:18:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTe-0007BQ-Ij for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:59 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTb-00046L-O6 for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:58 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8DxQK_NujJnJ7g7AA--.28168S3; Tue, 12 Nov 2024 10:17:49 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S3; Tue, 12 Nov 2024 10:17:48 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 1/6] hw/loongarch/virt: Add CPU topology support Date: Tue, 12 Nov 2024 10:17:33 +0800 Message-Id: <20241112021738.1952851-2-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S3 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377983152116600 Content-Type: text/plain; charset="utf-8" Add topological relationships for Loongarch VCPU and initialize topology member variables. Also physical cpu id calculation method comes from its topo information. Co-developed-by: Xianglai Li Signed-off-by: Bibo Mao --- docs/system/loongarch/virt.rst | 31 +++++++++++++++ hw/loongarch/virt.c | 73 ++++++++++++++++++++++++++++------ target/loongarch/cpu.c | 12 ++++++ target/loongarch/cpu.h | 16 ++++++++ 4 files changed, 119 insertions(+), 13 deletions(-) diff --git a/docs/system/loongarch/virt.rst b/docs/system/loongarch/virt.rst index 172fba079e..8daf60785f 100644 --- a/docs/system/loongarch/virt.rst +++ b/docs/system/loongarch/virt.rst @@ -28,6 +28,37 @@ The ``qemu-system-loongarch64`` provides emulation for v= irt machine. You can specify the machine type ``virt`` and cpu type ``la464``. =20 +CPU Topology +------------ + +The ``LA464`` type CPUs have the concept of Socket Core and Thread. + +For example: + +``-smp 1,maxcpus=3DM,sockets=3DS,cores=3DC,threads=3DT`` + +The above parameters indicate that the machine has a maximum of ``M`` vCPU= s and +``S`` sockets, each socket has ``C`` cores, each core has ``T`` threads, +and each thread corresponds to a vCPU. + +Then ``M`` ``S`` ``C`` ``T`` has the following relationship: + +``M =3D S * C * T`` + +In the CPU topology relationship, When we know the ``socket_id`` ``core_id= `` +and ``thread_id`` of the CPU, we can calculate its ``arch_id``: + +``arch_id =3D (socket_id * S) + (core_id * C) + (thread_id * T)`` + +Similarly, when we know the ``arch_id`` of the CPU, +we can also get its ``socket_id`` ``core_id`` and ``thread_id``: + +``socket_id =3D arch_id / (C * T)`` + +``core_id =3D (arch_id / T) % C`` + +``thread_id =3D arch_id % T`` + Boot options ------------ =20 diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 9a635d1d3d..1ed5130edf 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -1143,9 +1143,9 @@ static void virt_init(MachineState *machine) LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(machine); int i; hwaddr base, size, ram_size =3D machine->ram_size; - const CPUArchIdList *possible_cpus; MachineClass *mc =3D MACHINE_GET_CLASS(machine); CPUState *cpu; + Object *cpuobj; =20 if (!cpu_model) { cpu_model =3D LOONGARCH_CPU_TYPE_NAME("la464"); @@ -1163,13 +1163,30 @@ static void virt_init(MachineState *machine) memory_region_add_subregion(&lvms->system_iocsr, 0, &lvms->iocsr_mem); =20 /* Init CPUs */ - possible_cpus =3D mc->possible_cpu_arch_ids(machine); - for (i =3D 0; i < possible_cpus->len; i++) { - cpu =3D cpu_create(machine->cpu_type); + mc->possible_cpu_arch_ids(machine); + for (i =3D 0; i < machine->smp.cpus; i++) { + cpuobj =3D object_new(machine->cpu_type); + if (cpuobj =3D=3D NULL) { + error_report("Fail to create object with type %s ", + machine->cpu_type); + exit(EXIT_FAILURE); + } + + cpu =3D CPU(cpuobj); cpu->cpu_index =3D i; machine->possible_cpus->cpus[i].cpu =3D cpu; - lacpu =3D LOONGARCH_CPU(cpu); + lacpu =3D LOONGARCH_CPU(cpuobj); lacpu->phy_id =3D machine->possible_cpus->cpus[i].arch_id; + object_property_set_int(cpuobj, "socket-id", + machine->possible_cpus->cpus[i].props.sock= et_id, + NULL); + object_property_set_int(cpuobj, "core-id", + machine->possible_cpus->cpus[i].props.core= _id, + NULL); + object_property_set_int(cpuobj, "thread-id", + machine->possible_cpus->cpus[i].props.thre= ad_id, + NULL); + qdev_realize_and_unref(DEVICE(cpuobj), NULL, &error_fatal); } fdt_add_cpu_nodes(lvms); fdt_add_memory_nodes(machine); @@ -1286,6 +1303,35 @@ static void virt_initfn(Object *obj) virt_flash_create(lvms); } =20 +static int virt_get_arch_id_from_topo(MachineState *ms, LoongArchCPUTopo *= topo) +{ + int arch_id, sock_vcpu_num, core_vcpu_num; + + /* + * calculate total logical cpus across socket/core/thread. + * For more information on how to calculate the arch_id, + * you can refer to the CPU Topology chapter of the + * docs/system/loongarch/virt.rst document. + */ + sock_vcpu_num =3D topo->socket_id * (ms->smp.threads * ms->smp.cores); + core_vcpu_num =3D topo->core_id * ms->smp.threads; + + /* get vcpu-id(logical cpu index) for this vcpu from this topology */ + arch_id =3D (sock_vcpu_num + core_vcpu_num) + topo->thread_id; + + assert(arch_id >=3D 0 && arch_id < ms->possible_cpus->len); + + return arch_id; +} + +static void virt_get_topo_from_index(MachineState *ms, + LoongArchCPUTopo *topo, int index) +{ + topo->socket_id =3D index / (ms->smp.cores * ms->smp.threads); + topo->core_id =3D index / ms->smp.threads % ms->smp.cores; + topo->thread_id =3D index % ms->smp.threads; +} + static bool memhp_type_supported(DeviceState *dev) { /* we only support pc dimm now */ @@ -1385,8 +1431,9 @@ static HotplugHandler *virt_get_hotplug_handler(Machi= neState *machine, =20 static const CPUArchIdList *virt_possible_cpu_arch_ids(MachineState *ms) { - int n; + int n, arch_id; unsigned int max_cpus =3D ms->smp.max_cpus; + LoongArchCPUTopo topo; =20 if (ms->possible_cpus) { assert(ms->possible_cpus->len =3D=3D max_cpus); @@ -1397,17 +1444,17 @@ static const CPUArchIdList *virt_possible_cpu_arch_= ids(MachineState *ms) sizeof(CPUArchId) * max_cpus); ms->possible_cpus->len =3D max_cpus; for (n =3D 0; n < ms->possible_cpus->len; n++) { + virt_get_topo_from_index(ms, &topo, n); + arch_id =3D virt_get_arch_id_from_topo(ms, &topo); + ms->possible_cpus->cpus[n].vcpus_count =3D 1; ms->possible_cpus->cpus[n].type =3D ms->cpu_type; - ms->possible_cpus->cpus[n].arch_id =3D n; - + ms->possible_cpus->cpus[n].arch_id =3D arch_id; ms->possible_cpus->cpus[n].props.has_socket_id =3D true; - ms->possible_cpus->cpus[n].props.socket_id =3D - n / (ms->smp.cores * ms->smp.threads); + ms->possible_cpus->cpus[n].props.socket_id =3D topo.socket_id; ms->possible_cpus->cpus[n].props.has_core_id =3D true; - ms->possible_cpus->cpus[n].props.core_id =3D - n / ms->smp.threads % ms->smp.cores; + ms->possible_cpus->cpus[n].props.core_id =3D topo.core_id; ms->possible_cpus->cpus[n].props.has_thread_id =3D true; - ms->possible_cpus->cpus[n].props.thread_id =3D n % ms->smp.threads; + ms->possible_cpus->cpus[n].props.thread_id =3D topo.thread_id; } return ms->possible_cpus; } diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index 57cc4f314b..a99e22094e 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -16,6 +16,7 @@ #include "kvm/kvm_loongarch.h" #include "exec/exec-all.h" #include "cpu.h" +#include "hw/qdev-properties.h" #include "internals.h" #include "fpu/softfloat-helpers.h" #include "cpu-csr.h" @@ -725,6 +726,7 @@ static void loongarch_cpu_init(Object *obj) timer_init_ns(&cpu->timer, QEMU_CLOCK_VIRTUAL, &loongarch_constant_timer_cb, cpu); #endif + cpu->phy_id =3D UNSET_PHY_ID; #endif } =20 @@ -823,6 +825,14 @@ static int64_t loongarch_cpu_get_arch_id(CPUState *cs) } #endif =20 +static Property loongarch_cpu_properties[] =3D { + DEFINE_PROP_INT32("socket-id", LoongArchCPU, socket_id, 0), + DEFINE_PROP_INT32("core-id", LoongArchCPU, core_id, 0), + DEFINE_PROP_INT32("thread-id", LoongArchCPU, thread_id, 0), + DEFINE_PROP_INT32("node-id", LoongArchCPU, node_id, CPU_UNSET_NUMA_NOD= E_ID), + DEFINE_PROP_END_OF_LIST() +}; + static void loongarch_cpu_class_init(ObjectClass *c, void *data) { LoongArchCPUClass *lacc =3D LOONGARCH_CPU_CLASS(c); @@ -830,6 +840,7 @@ static void loongarch_cpu_class_init(ObjectClass *c, vo= id *data) DeviceClass *dc =3D DEVICE_CLASS(c); ResettableClass *rc =3D RESETTABLE_CLASS(c); =20 + device_class_set_props(dc, loongarch_cpu_properties); device_class_set_parent_realize(dc, loongarch_cpu_realizefn, &lacc->parent_realize); resettable_class_set_parent_phases(rc, NULL, loongarch_cpu_reset_hold,= NULL, @@ -854,6 +865,7 @@ static void loongarch_cpu_class_init(ObjectClass *c, vo= id *data) #ifdef CONFIG_TCG cc->tcg_ops =3D &loongarch_tcg_ops; #endif + dc->user_creatable =3D true; } =20 static const gchar *loongarch32_gdb_arch_name(CPUState *cs) diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 86c86c6c95..7472df0521 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -19,6 +19,12 @@ #include "cpu-csr.h" #include "cpu-qom.h" =20 +/* + * CPU can't have 0xFFFFFFFF physical ID, use that value to distinguish + * that physical ID hasn't been set yet + */ +#define UNSET_PHY_ID 0xFFFFFFFF + #define IOCSRF_TEMP 0 #define IOCSRF_NODECNT 1 #define IOCSRF_MSI 2 @@ -390,6 +396,12 @@ typedef struct CPUArchState { #endif } CPULoongArchState; =20 +typedef struct LoongArchCPUTopo { + int32_t socket_id; /* socket-id of this VCPU */ + int32_t core_id; /* core-id of this VCPU */ + int32_t thread_id; /* thread-id of this VCPU */ +} LoongArchCPUTopo; + /** * LoongArchCPU: * @env: #CPULoongArchState @@ -404,6 +416,10 @@ struct ArchCPU { uint32_t phy_id; OnOffAuto lbt; OnOffAuto pmu; + int32_t socket_id; /* socket-id of this VCPU */ + int32_t core_id; /* core-id of this VCPU */ + int32_t thread_id; /* thread-id of this VCPU */ + int32_t node_id; /* NUMA node of this VCPU */ =20 /* 'compatible' string for this CPU for Linux device trees */ const char *dtb_compatible; --=20 2.39.3 From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731377935582523.7005177387837; Mon, 11 Nov 2024 18:18:55 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTh-0007BW-Gi; Mon, 11 Nov 2024 21:18:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTc-0007AO-Sw for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:56 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTa-00046M-3f for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:56 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8BxYa_NujJnLLg7AA--.52859S3; Tue, 12 Nov 2024 10:17:49 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S4; Tue, 12 Nov 2024 10:17:49 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 2/6] hw/loongarch/virt: Implement cpu plug interface Date: Tue, 12 Nov 2024 10:17:34 +0800 Message-Id: <20241112021738.1952851-3-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S4 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377938002116600 Content-Type: text/plain; charset="utf-8" Add cpu hotplug interface, however cpu hotplug feature is still disabled for the machine. When machine is on, all created vCPUs go through hotplug interface, and there is no remaining vCPU which can be hot-added after power on. Co-developed-by: Xianglai Li Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 127 ++++++++++++++++++++++++++++++++++++++++- target/loongarch/cpu.c | 13 +++++ target/loongarch/cpu.h | 1 + 3 files changed, 140 insertions(+), 1 deletion(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 1ed5130edf..b6b616d278 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -1174,7 +1174,6 @@ static void virt_init(MachineState *machine) =20 cpu =3D CPU(cpuobj); cpu->cpu_index =3D i; - machine->possible_cpus->cpus[i].cpu =3D cpu; lacpu =3D LOONGARCH_CPU(cpuobj); lacpu->phy_id =3D machine->possible_cpus->cpus[i].arch_id; object_property_set_int(cpuobj, "socket-id", @@ -1332,6 +1331,123 @@ static void virt_get_topo_from_index(MachineState *= ms, topo->thread_id =3D index % ms->smp.threads; } =20 +/* Find cpu slot in machine->possible_cpus by arch_id */ +static CPUArchId *virt_find_cpu_slot(MachineState *ms, int arch_id) +{ + int n; + for (n =3D 0; n < ms->possible_cpus->len; n++) { + if (ms->possible_cpus->cpus[n].arch_id =3D=3D arch_id) { + return &ms->possible_cpus->cpus[n]; + } + } + + return NULL; +} + +static void virt_cpu_pre_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); + MachineState *ms =3D MACHINE(OBJECT(hotplug_dev)); + LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); + CPUArchId *cpu_slot; + Error *local_err =3D NULL; + int arch_id; + + /* sanity check the cpu */ + if (!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { + error_setg(&local_err, "Invalid CPU type, expected cpu type: '%s'", + ms->cpu_type); + goto out; + } + + if (lvms->acpi_ged) { + hotplug_handler_pre_plug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, + &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } + + if (cpu->phy_id =3D=3D UNSET_PHY_ID) { + error_setg(&local_err, "CPU hotplug not supported"); + goto out; + } else { + /* For cold-add cpu, find cpu slot from arch_id */ + arch_id =3D cpu->phy_id; + cpu_slot =3D virt_find_cpu_slot(ms, arch_id); + } + + numa_cpu_pre_plug(cpu_slot, dev, &local_err); + return; + +out: + error_propagate(errp, local_err); +} + +static void virt_cpu_unplug_request(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); + Error *local_err =3D NULL; + LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); + CPUState *cs =3D CPU(dev); + + if (!lvms->acpi_ged) { + error_setg(&local_err, "CPU hot unplug not supported without ACPI"= ); + error_propagate(errp, local_err); + return; + } + + if (cs->cpu_index =3D=3D 0) { + error_setg(&local_err, + "hot-unplug of boot cpu(id%d=3D%d:%d:%d) not supported", + cs->cpu_index, cpu->socket_id, + cpu->core_id, cpu->thread_id); + error_propagate(errp, local_err); + return; + } + + hotplug_handler_unplug_request(HOTPLUG_HANDLER(lvms->acpi_ged), dev, + &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } +} + +static void virt_cpu_unplug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + CPUArchId *cpu_slot; + Error *local_err =3D NULL; + LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); + + hotplug_handler_unplug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, &local_er= r); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id); + cpu_slot->cpu =3D NULL; + return; +} + +static void virt_cpu_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + CPUArchId *cpu_slot; + LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); + + cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id); + cpu_slot->cpu =3D CPU(dev); + return; +} + static bool memhp_type_supported(DeviceState *dev) { /* we only support pc dimm now */ @@ -1350,6 +1466,8 @@ static void virt_device_pre_plug(HotplugHandler *hotp= lug_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); } } =20 @@ -1368,6 +1486,8 @@ 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); } } =20 @@ -1386,6 +1506,8 @@ static void virt_device_unplug(HotplugHandler *hotplu= g_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); } } =20 @@ -1413,6 +1535,8 @@ static void virt_device_plug_cb(HotplugHandler *hotpl= ug_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); } } =20 @@ -1422,6 +1546,7 @@ static HotplugHandler *virt_get_hotplug_handler(Machi= neState *machine, MachineClass *mc =3D MACHINE_GET_CLASS(machine); =20 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); diff --git a/target/loongarch/cpu.c b/target/loongarch/cpu.c index a99e22094e..a5467811ab 100644 --- a/target/loongarch/cpu.c +++ b/target/loongarch/cpu.c @@ -613,6 +613,17 @@ static void loongarch_cpu_realizefn(DeviceState *dev, = Error **errp) lacc->parent_realize(dev, errp); } =20 +static void loongarch_cpu_unrealizefn(DeviceState *dev) +{ + LoongArchCPUClass *mcc =3D LOONGARCH_CPU_GET_CLASS(dev); + +#ifndef CONFIG_USER_ONLY + cpu_remove_sync(CPU(dev)); +#endif + + mcc->parent_unrealize(dev); +} + static bool loongarch_get_lsx(Object *obj, Error **errp) { LoongArchCPU *cpu =3D LOONGARCH_CPU(obj); @@ -843,6 +854,8 @@ static void loongarch_cpu_class_init(ObjectClass *c, vo= id *data) device_class_set_props(dc, loongarch_cpu_properties); device_class_set_parent_realize(dc, loongarch_cpu_realizefn, &lacc->parent_realize); + device_class_set_parent_unrealize(dc, loongarch_cpu_unrealizefn, + &lacc->parent_unrealize); resettable_class_set_parent_phases(rc, NULL, loongarch_cpu_reset_hold,= NULL, &lacc->parent_phases); =20 diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 7472df0521..22e6d9baf5 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -438,6 +438,7 @@ struct LoongArchCPUClass { CPUClass parent_class; =20 DeviceRealize parent_realize; + DeviceUnrealize parent_unrealize; ResettablePhases parent_phases; }; =20 --=20 2.39.3 From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731377985922716.3500691731672; Mon, 11 Nov 2024 18:19:45 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTm-0007Cl-2p; Mon, 11 Nov 2024 21:18:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTe-0007BM-8t for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:59 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTb-00046R-8G for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:58 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8BxIK_OujJnMLg7AA--.28809S3; Tue, 12 Nov 2024 10:17:50 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S5; Tue, 12 Nov 2024 10:17:49 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 3/6] hw/loongarch/virt: Add generic function to init interrupt pin of CPU Date: Tue, 12 Nov 2024 10:17:35 +0800 Message-Id: <20241112021738.1952851-4-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S5 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377986596116600 Content-Type: text/plain; charset="utf-8" Here generic function virt_init_cpu_irq() is added to init interrupt pin of CPU object, IPI and extioi interrupt controllers are connected to interrupt pin of CPU object. The generic function can be used to both cold-plug and hot-plug CPUs. Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 78 ++++++++++++++++++++++++------------- include/hw/loongarch/virt.h | 2 + 2 files changed, 53 insertions(+), 27 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index b6b616d278..621380e2b3 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -58,6 +58,20 @@ static bool virt_is_veiointc_enabled(LoongArchVirtMachin= eState *lvms) return true; } =20 +static CPUState *virt_get_cpu(MachineState *ms, int index) +{ + MachineClass *mc =3D MACHINE_GET_CLASS(ms); + const CPUArchIdList *possible_cpus; + + /* Init CPUs */ + possible_cpus =3D mc->possible_cpu_arch_ids(ms); + if (index < 0 || index >=3D possible_cpus->len) { + return NULL; + } + + return possible_cpus->cpus[index].cpu; +} + static void virt_get_veiointc(Object *obj, Visitor *v, const char *name, void *opaque, Error **errp) { @@ -365,7 +379,7 @@ static void create_fdt(LoongArchVirtMachineState *lvms) static void fdt_add_cpu_nodes(const LoongArchVirtMachineState *lvms) { int num; - const MachineState *ms =3D MACHINE(lvms); + MachineState *ms =3D MACHINE(lvms); int smp_cpus =3D ms->smp.cpus; =20 qemu_fdt_add_subnode(ms->fdt, "/cpus"); @@ -375,7 +389,7 @@ static void fdt_add_cpu_nodes(const LoongArchVirtMachin= eState *lvms) /* cpu nodes */ for (num =3D smp_cpus - 1; num >=3D 0; num--) { char *nodename =3D g_strdup_printf("/cpus/cpu@%d", num); - LoongArchCPU *cpu =3D LOONGARCH_CPU(qemu_get_cpu(num)); + LoongArchCPU *cpu =3D LOONGARCH_CPU(virt_get_cpu(ms, num)); CPUState *cs =3D CPU(cpu); =20 qemu_fdt_add_subnode(ms->fdt, nodename); @@ -783,16 +797,42 @@ static void virt_devices_init(DeviceState *pch_pic, lvms->platform_bus_dev =3D create_platform_bus(pch_pic); } =20 +static void virt_init_cpu_irq(MachineState *ms, CPUState *cs) +{ + LoongArchCPU *cpu =3D LOONGARCH_CPU(cs); + CPULoongArchState *env; + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(ms); + int pin; + + if (!lvms->ipi || !lvms->extioi) { + return; + } + + env =3D &(cpu->env); + env->address_space_iocsr =3D &lvms->as_iocsr; + env->ipistate =3D lvms->ipi; + /* connect ipi irq to cpu irq, logic cpu index used here */ + qdev_connect_gpio_out(lvms->ipi, cs->cpu_index, + qdev_get_gpio_in(DEVICE(cs), IRQ_IPI)); + + /* + * connect ext irq to the cpu irq + * cpu_pin[9:2] <=3D intc_pin[7:0] + */ + for (pin =3D 0; pin < LS3A_INTC_IP; pin++) { + qdev_connect_gpio_out(lvms->extioi, cs->cpu_index * LS3A_INTC_IP += pin, + qdev_get_gpio_in(DEVICE(cs), pin + 2)); + } +} + static void virt_irq_init(LoongArchVirtMachineState *lvms) { MachineState *ms =3D MACHINE(lvms); - DeviceState *pch_pic, *pch_msi, *cpudev; + DeviceState *pch_pic, *pch_msi; DeviceState *ipi, *extioi; SysBusDevice *d; - LoongArchCPU *lacpu; - CPULoongArchState *env; CPUState *cpu_state; - int cpu, pin, i, start, num; + int cpu, i, start, num; uint32_t cpuintc_phandle, eiointc_phandle, pch_pic_phandle, pch_msi_ph= andle; =20 /* @@ -843,6 +883,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lv= ms) ipi =3D qdev_new(TYPE_LOONGARCH_IPI); qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus); sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); + lvms->ipi =3D ipi; =20 /* IPI iocsr memory region */ memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX, @@ -853,18 +894,6 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) /* Add cpu interrupt-controller */ fdt_add_cpuic_node(lvms, &cpuintc_phandle); =20 - for (cpu =3D 0; cpu < ms->smp.cpus; cpu++) { - cpu_state =3D qemu_get_cpu(cpu); - cpudev =3D DEVICE(cpu_state); - lacpu =3D LOONGARCH_CPU(cpu_state); - env =3D &(lacpu->env); - env->address_space_iocsr =3D &lvms->as_iocsr; - - /* connect ipi irq to cpu irq */ - qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); - env->ipistate =3D ipi; - } - /* Create EXTIOI device */ extioi =3D qdev_new(TYPE_LOONGARCH_EXTIOI); qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); @@ -872,6 +901,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lv= ms) qdev_prop_set_bit(extioi, "has-virtualization-extension", true); } sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); + lvms->extioi =3D extioi; memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE, sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); if (virt_is_veiointc_enabled(lvms)) { @@ -879,16 +909,10 @@ static void virt_irq_init(LoongArchVirtMachineState *= lvms) sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); } =20 - /* - * connect ext irq to the cpu irq - * cpu_pin[9:2] <=3D intc_pin[7:0] - */ + /* Connect irq to cpu, including ipi and extioi irqchip */ for (cpu =3D 0; cpu < ms->smp.cpus; cpu++) { - cpudev =3D DEVICE(qemu_get_cpu(cpu)); - for (pin =3D 0; pin < LS3A_INTC_IP; pin++) { - qdev_connect_gpio_out(extioi, (cpu * 8 + pin), - qdev_get_gpio_in(cpudev, pin + 2)); - } + cpu_state =3D virt_get_cpu(ms, cpu); + virt_init_cpu_irq(ms, cpu_state); } =20 /* Add Extend I/O Interrupt Controller node */ diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 9ba47793ef..260e6bd7cf 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -60,6 +60,8 @@ struct LoongArchVirtMachineState { MemoryRegion iocsr_mem; AddressSpace as_iocsr; struct loongarch_boot_info bootinfo; + DeviceState *ipi; + DeviceState *extioi; }; =20 #define TYPE_LOONGARCH_VIRT_MACHINE MACHINE_TYPE_NAME("virt") --=20 2.39.3 From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 173137793548184.77749865544376; Mon, 11 Nov 2024 18:18:55 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTh-0007BJ-Gz; Mon, 11 Nov 2024 21:18:02 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTc-0007AN-Ob for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:56 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTa-00046T-I3 for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:56 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8AxEK_OujJnNLg7AA--.13555S3; Tue, 12 Nov 2024 10:17:50 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S6; Tue, 12 Nov 2024 10:17:50 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 4/6] hw/loongarch/virt: Init interrupt pin of CPU during plug interface Date: Tue, 12 Nov 2024 10:17:36 +0800 Message-Id: <20241112021738.1952851-5-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S6 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377937951116600 Content-Type: text/plain; charset="utf-8" Move CPU object creation after interrupt controller ipi and extioi, and init interrupt pin of CPU in plug interface virt_cpu_plug(). So interrupt pin initialization of the cold-plug CPUs is the same with that of hot-plug CPUs. Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 84 ++++++++++++++++++++++++--------------------- 1 file changed, 45 insertions(+), 39 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 621380e2b3..0e0c6c202b 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -831,8 +831,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lv= ms) DeviceState *pch_pic, *pch_msi; DeviceState *ipi, *extioi; SysBusDevice *d; - CPUState *cpu_state; - int cpu, i, start, num; + int i, start, num; uint32_t cpuintc_phandle, eiointc_phandle, pch_pic_phandle, pch_msi_ph= andle; =20 /* @@ -909,12 +908,6 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); } =20 - /* Connect irq to cpu, including ipi and extioi irqchip */ - for (cpu =3D 0; cpu < ms->smp.cpus; cpu++) { - cpu_state =3D virt_get_cpu(ms, cpu); - virt_init_cpu_irq(ms, cpu_state); - } - /* Add Extend I/O Interrupt Controller node */ fdt_add_eiointc_node(lvms, &cpuintc_phandle, &eiointc_phandle); =20 @@ -960,6 +953,44 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) virt_devices_init(pch_pic, lvms, &pch_pic_phandle, &pch_msi_phandle); } =20 +static void virt_init_cpus(MachineState *machine) +{ + int i; + MachineClass *mc =3D MACHINE_GET_CLASS(machine); + Object *cpuobj; + CPUState *cpu; + LoongArchCPU *lacpu; + LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(machine); + + /* Init CPUs */ + mc->possible_cpu_arch_ids(machine); + for (i =3D 0; i < machine->smp.cpus; i++) { + cpuobj =3D object_new(machine->cpu_type); + if (cpuobj =3D=3D NULL) { + error_report("Fail to create object with type %s ", + machine->cpu_type); + exit(EXIT_FAILURE); + } + + cpu =3D CPU(cpuobj); + cpu->cpu_index =3D i; + lacpu =3D LOONGARCH_CPU(cpuobj); + lacpu->phy_id =3D machine->possible_cpus->cpus[i].arch_id; + object_property_set_int(cpuobj, "socket-id", + machine->possible_cpus->cpus[i].props.sock= et_id, + NULL); + object_property_set_int(cpuobj, "core-id", + machine->possible_cpus->cpus[i].props.core= _id, + NULL); + object_property_set_int(cpuobj, "thread-id", + machine->possible_cpus->cpus[i].props.thre= ad_id, + NULL); + qdev_realize_and_unref(DEVICE(cpuobj), NULL, &error_fatal); + } + + fdt_add_cpu_nodes(lvms); +} + static void virt_firmware_init(LoongArchVirtMachineState *lvms) { char *filename =3D MACHINE(lvms)->firmware; @@ -1161,15 +1192,10 @@ static void fw_cfg_add_memory(MachineState *ms) =20 static void virt_init(MachineState *machine) { - LoongArchCPU *lacpu; const char *cpu_model =3D machine->cpu_type; MemoryRegion *address_space_mem =3D get_system_memory(); LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(machine); - int i; hwaddr base, size, ram_size =3D machine->ram_size; - MachineClass *mc =3D MACHINE_GET_CLASS(machine); - CPUState *cpu; - Object *cpuobj; =20 if (!cpu_model) { cpu_model =3D LOONGARCH_CPU_TYPE_NAME("la464"); @@ -1186,32 +1212,6 @@ static void virt_init(MachineState *machine) machine, "iocsr_misc", 0x428); memory_region_add_subregion(&lvms->system_iocsr, 0, &lvms->iocsr_mem); =20 - /* Init CPUs */ - mc->possible_cpu_arch_ids(machine); - for (i =3D 0; i < machine->smp.cpus; i++) { - cpuobj =3D object_new(machine->cpu_type); - if (cpuobj =3D=3D NULL) { - error_report("Fail to create object with type %s ", - machine->cpu_type); - exit(EXIT_FAILURE); - } - - cpu =3D CPU(cpuobj); - cpu->cpu_index =3D i; - lacpu =3D LOONGARCH_CPU(cpuobj); - lacpu->phy_id =3D machine->possible_cpus->cpus[i].arch_id; - object_property_set_int(cpuobj, "socket-id", - machine->possible_cpus->cpus[i].props.sock= et_id, - NULL); - object_property_set_int(cpuobj, "core-id", - machine->possible_cpus->cpus[i].props.core= _id, - NULL); - object_property_set_int(cpuobj, "thread-id", - machine->possible_cpus->cpus[i].props.thre= ad_id, - NULL); - qdev_realize_and_unref(DEVICE(cpuobj), NULL, &error_fatal); - } - fdt_add_cpu_nodes(lvms); fdt_add_memory_nodes(machine); fw_cfg_add_memory(machine); =20 @@ -1269,6 +1269,9 @@ static void virt_init(MachineState *machine) =20 /* Initialize the IO interrupt subsystem */ virt_irq_init(lvms); + + /* Init CPUs */ + virt_init_cpus(machine); platform_bus_add_all_fdt_nodes(machine->fdt, "/platic", VIRT_PLATFORM_BUS_BASEADDRESS, VIRT_PLATFORM_BUS_SIZE, @@ -1465,8 +1468,11 @@ static void virt_cpu_plug(HotplugHandler *hotplug_de= v, { CPUArchId *cpu_slot; LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); + MachineState *ms =3D MACHINE(hotplug_dev); LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); =20 + /* Connect irq to cpu, including ipi and extioi irqchip */ + virt_init_cpu_irq(ms, CPU(cpu)); cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id); cpu_slot->cpu =3D CPU(dev); return; --=20 2.39.3 From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731377937144222.8263077788846; Mon, 11 Nov 2024 18:18:57 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTl-0007Cj-Io; Mon, 11 Nov 2024 21:18:05 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTe-0007BN-91 for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:59 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTb-00046X-A4 for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:58 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8DxGeDPujJnOLg7AA--.51977S3; Tue, 12 Nov 2024 10:17:51 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S7; Tue, 12 Nov 2024 10:17:50 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 5/6] hw/loongarch/virt: Update the ACPI table for hotplug cpu Date: Tue, 12 Nov 2024 10:17:37 +0800 Message-Id: <20241112021738.1952851-6-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S7 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377938543116600 Content-Type: text/plain; charset="utf-8" On LoongArch virt machine, ACPI GED hardware is used for CPU hotplug handler, here CPU hotplug support feature is added based on GED handler, also CPU scan and reject method is added about CPU device in DSDT table. Co-developed-by: Xianglai Li Signed-off-by: Bibo Mao --- hw/loongarch/Kconfig | 1 + hw/loongarch/acpi-build.c | 35 +++++++++++++++++++++++++++++++++-- hw/loongarch/virt.c | 10 ++++++++++ include/hw/loongarch/virt.h | 1 + 4 files changed, 45 insertions(+), 2 deletions(-) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index fe1c6feac1..bb2838b7b5 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -17,6 +17,7 @@ config LOONGARCH_VIRT select LOONGARCH_EXTIOI select LS7A_RTC select SMBIOS + select ACPI_CPU_HOTPLUG select ACPI_PCI select ACPI_HW_REDUCED select FW_CFG_DMA diff --git a/hw/loongarch/acpi-build.c b/hw/loongarch/acpi-build.c index 50709bda0f..c220edec68 100644 --- a/hw/loongarch/acpi-build.c +++ b/hw/loongarch/acpi-build.c @@ -47,6 +47,22 @@ #define ACPI_BUILD_DPRINTF(fmt, ...) #endif =20 +static void virt_madt_cpu_entry(int uid, + const CPUArchIdList *apic_ids, + GArray *entry, bool force_enabled) +{ + uint32_t flags, apic_id =3D apic_ids->cpus[uid].arch_id; + + flags =3D apic_ids->cpus[uid].cpu || force_enabled ? 1 /* Enabled */ := 0; + + /* Rev 1.0b, Table 5-13 Processor Local APIC Structure */ + build_append_int_noprefix(entry, 0, 1); /* Type */ + build_append_int_noprefix(entry, 8, 1); /* Length */ + build_append_int_noprefix(entry, uid, 1); /* ACPI Processor ID */ + build_append_int_noprefix(entry, apic_id, 1); /* APIC ID */ + build_append_int_noprefix(entry, flags, 4); /* Flags */ +} + /* build FADT */ static void init_common_fadt_data(AcpiFadtData *data) { @@ -123,15 +139,17 @@ build_madt(GArray *table_data, BIOSLinker *linker, build_append_int_noprefix(table_data, 1 /* PCAT_COMPAT */, 4); /* Flag= s */ =20 for (i =3D 0; i < arch_ids->len; i++) { + uint32_t flags; + /* Processor Core Interrupt Controller Structure */ arch_id =3D arch_ids->cpus[i].arch_id; - + flags =3D arch_ids->cpus[i].cpu ? 1 : 0; build_append_int_noprefix(table_data, 17, 1); /* Type */ build_append_int_noprefix(table_data, 15, 1); /* Length */ build_append_int_noprefix(table_data, 1, 1); /* Version */ build_append_int_noprefix(table_data, i, 4); /* ACPI Processor= ID */ build_append_int_noprefix(table_data, arch_id, 4); /* Core ID */ - build_append_int_noprefix(table_data, 1, 4); /* Flags */ + build_append_int_noprefix(table_data, flags, 4); /* Flags */ } =20 /* Extend I/O Interrupt Controller Structure */ @@ -334,6 +352,7 @@ build_la_ged_aml(Aml *dsdt, MachineState *machine) { uint32_t event; LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(machine); + CPUHotplugFeatures opts; =20 build_ged_aml(dsdt, "\\_SB."GED_DEVICE, HOTPLUG_HANDLER(lvms->acpi_ged), @@ -346,6 +365,18 @@ build_la_ged_aml(Aml *dsdt, MachineState *machine) AML_SYSTEM_MEMORY, VIRT_GED_MEM_ADDR); } + + if (event & ACPI_GED_CPU_HOTPLUG_EVT) { + opts.acpi_1_compatible =3D false; + opts.has_legacy_cphp =3D false; + opts.fw_unplugs_cpu =3D false; + opts.smi_path =3D NULL; + + build_cpus_aml(dsdt, machine, opts, virt_madt_cpu_entry, + VIRT_GED_CPUHP_ADDR, "\\_SB", + AML_GED_EVT_CPU_SCAN_METHOD, AML_SYSTEM_MEMORY); + } + acpi_dsdt_add_power_button(dsdt); } =20 diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 0e0c6c202b..b49b15c0f6 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -666,11 +666,17 @@ static DeviceState *create_acpi_ged(DeviceState *pch_= pic, { DeviceState *dev; MachineState *ms =3D MACHINE(lvms); + MachineClass *mc =3D MACHINE_GET_CLASS(lvms); uint32_t event =3D ACPI_GED_PWR_DOWN_EVT; =20 if (ms->ram_slots) { event |=3D ACPI_GED_MEM_HOTPLUG_EVT; } + + if (mc->has_hotpluggable_cpus) { + event |=3D ACPI_GED_CPU_HOTPLUG_EVT; + } + dev =3D qdev_new(TYPE_ACPI_GED); qdev_prop_set_uint32(dev, "ged-event", event); sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal); @@ -682,6 +688,10 @@ static DeviceState *create_acpi_ged(DeviceState *pch_p= ic, /* ged regs used for reset and power down */ sysbus_mmio_map(SYS_BUS_DEVICE(dev), 2, VIRT_GED_REG_ADDR); =20 + if (mc->has_hotpluggable_cpus) { + sysbus_mmio_map(SYS_BUS_DEVICE(dev), 3, VIRT_GED_CPUHP_ADDR); + } + sysbus_connect_irq(SYS_BUS_DEVICE(dev), 0, qdev_get_gpio_in(pch_pic, VIRT_SCI_IRQ - VIRT_GSI_B= ASE)); return dev; diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index 260e6bd7cf..79a85723c9 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -30,6 +30,7 @@ #define VIRT_GED_EVT_ADDR 0x100e0000 #define VIRT_GED_MEM_ADDR (VIRT_GED_EVT_ADDR + ACPI_GED_EVT_SEL_LEN) #define VIRT_GED_REG_ADDR (VIRT_GED_MEM_ADDR + MEMORY_HOTPLUG_IO_LEN) +#define VIRT_GED_CPUHP_ADDR (VIRT_GED_REG_ADDR + ACPI_GED_REG_COUNT) =20 #define COMMAND_LINE_SIZE 512 =20 --=20 2.39.3 From nobody Sat Nov 23 18:04:28 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1731377984534669.5611749296554; Mon, 11 Nov 2024 18:19:44 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTm-0007D5-UY; Mon, 11 Nov 2024 21:18:06 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tAgTe-0007BO-H9 for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:59 -0500 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tAgTc-00046d-Dr for qemu-devel@nongnu.org; Mon, 11 Nov 2024 21:17:58 -0500 Received: from loongson.cn (unknown [10.2.5.213]) by gateway (Coremail) with SMTP id _____8CxC+LPujJnPLg7AA--.52222S3; Tue, 12 Nov 2024 10:17:51 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.213]) by front1 (Coremail) with SMTP id qMiowMCx98DCujJniixSAA--.12416S8; Tue, 12 Nov 2024 10:17:51 +0800 (CST) From: Bibo Mao To: Song Gao , Paolo Bonzini , Zhao Liu , Igor Mammedov Cc: Jiaxun Yang , Xianglai Li , qemu-devel@nongnu.org Subject: [PATCH v4 6/6] hw/loongarch/virt: Enable cpu hotplug feature on virt machine Date: Tue, 12 Nov 2024 10:17:38 +0800 Message-Id: <20241112021738.1952851-7-maobibo@loongson.cn> X-Mailer: git-send-email 2.39.3 In-Reply-To: <20241112021738.1952851-1-maobibo@loongson.cn> References: <20241112021738.1952851-1-maobibo@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMCx98DCujJniixSAA--.12416S8 X-CM-SenderInfo: xpdruxter6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=114.242.206.163; envelope-from=maobibo@loongson.cn; helo=mail.loongson.cn X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1731377986750116600 Content-Type: text/plain; charset="utf-8" On virt machine, enable CPU hotplug feature has_hotpluggable_cpus. For hot-added CPUs, there is socket-id/core-id/thread-id property set, arch_id can be caculated from these properties. So that cpu slot can be searched from its arch_id. Also change num-cpu property of extioi and ipi from smp.cpus to smp.max_cpus Co-developed-by: Xianglai Li Signed-off-by: Bibo Mao --- hw/loongarch/virt.c | 68 +++++++++++++++++++++++++++++++++++++++------ 1 file changed, 59 insertions(+), 9 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index b49b15c0f6..5f81673368 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -890,7 +890,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lv= ms) =20 /* Create IPI device */ ipi =3D qdev_new(TYPE_LOONGARCH_IPI); - qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus); + qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.max_cpus); sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); lvms->ipi =3D ipi; =20 @@ -905,7 +905,7 @@ static void virt_irq_init(LoongArchVirtMachineState *lv= ms) =20 /* Create EXTIOI device */ extioi =3D qdev_new(TYPE_LOONGARCH_EXTIOI); - qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); + qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.max_cpus); if (virt_is_veiointc_enabled(lvms)) { qdev_prop_set_bit(extioi, "has-virtualization-extension", true); } @@ -1369,11 +1369,15 @@ static void virt_get_topo_from_index(MachineState *= ms, } =20 /* Find cpu slot in machine->possible_cpus by arch_id */ -static CPUArchId *virt_find_cpu_slot(MachineState *ms, int arch_id) +static CPUArchId *virt_find_cpu_slot(MachineState *ms, int arch_id, int *i= ndex) { int n; for (n =3D 0; n < ms->possible_cpus->len; n++) { if (ms->possible_cpus->cpus[n].arch_id =3D=3D arch_id) { + if (index) { + *index =3D n; + } + return &ms->possible_cpus->cpus[n]; } } @@ -1386,10 +1390,12 @@ static void virt_cpu_pre_plug(HotplugHandler *hotpl= ug_dev, { LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); MachineState *ms =3D MACHINE(OBJECT(hotplug_dev)); + CPUState *cs =3D CPU(dev); LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); CPUArchId *cpu_slot; Error *local_err =3D NULL; - int arch_id; + LoongArchCPUTopo topo; + int arch_id, index; =20 /* sanity check the cpu */ if (!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) { @@ -1408,12 +1414,45 @@ static void virt_cpu_pre_plug(HotplugHandler *hotpl= ug_dev, } =20 if (cpu->phy_id =3D=3D UNSET_PHY_ID) { - error_setg(&local_err, "CPU hotplug not supported"); - goto out; + if ((cpu->thread_id < 0) || (cpu->thread_id >=3D ms->smp.threads))= { + error_setg(&local_err, + "Invalid thread-id %u specified, must be in range 1= :%u", + cpu->thread_id, ms->smp.threads - 1); + goto out; + } + + if ((cpu->core_id < 0) || (cpu->core_id >=3D ms->smp.cores)) { + error_setg(&local_err, + "Invalid core-id %u specified, must be in range 1:%= u", + cpu->core_id, ms->smp.cores - 1); + goto out; + } + + if ((cpu->socket_id < 0) || (cpu->socket_id >=3D ms->smp.sockets))= { + error_setg(&local_err, + "Invalid socket-id %u specified, must be in range 1= :%u", + cpu->socket_id, ms->smp.sockets - 1); + goto out; + } + + topo.socket_id =3D cpu->socket_id; + topo.core_id =3D cpu->core_id; + topo.thread_id =3D cpu->thread_id; + arch_id =3D virt_get_arch_id_from_topo(ms, &topo); + cpu_slot =3D virt_find_cpu_slot(ms, arch_id, &index); + if (CPU(cpu_slot->cpu)) { + error_setg(&local_err, + "cpu(id%d=3D%d:%d:%d) with arch-id %" PRIu64 " exis= ts", + cs->cpu_index, cpu->socket_id, cpu->core_id, + cpu->thread_id, cpu_slot->arch_id); + goto out; + } + cpu->phy_id =3D arch_id; + cs->cpu_index =3D index; } else { /* For cold-add cpu, find cpu slot from arch_id */ arch_id =3D cpu->phy_id; - cpu_slot =3D virt_find_cpu_slot(ms, arch_id); + cpu_slot =3D virt_find_cpu_slot(ms, arch_id, NULL); } =20 numa_cpu_pre_plug(cpu_slot, dev, &local_err); @@ -1468,7 +1507,7 @@ static void virt_cpu_unplug(HotplugHandler *hotplug_d= ev, return; } =20 - cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id); + cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id, NULL); cpu_slot->cpu =3D NULL; return; } @@ -1477,14 +1516,24 @@ static void virt_cpu_plug(HotplugHandler *hotplug_d= ev, DeviceState *dev, Error **errp) { CPUArchId *cpu_slot; + Error *local_err =3D NULL; LoongArchCPU *cpu =3D LOONGARCH_CPU(dev); MachineState *ms =3D MACHINE(hotplug_dev); LoongArchVirtMachineState *lvms =3D LOONGARCH_VIRT_MACHINE(hotplug_dev= ); =20 /* Connect irq to cpu, including ipi and extioi irqchip */ virt_init_cpu_irq(ms, CPU(cpu)); - cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id); + cpu_slot =3D virt_find_cpu_slot(MACHINE(lvms), cpu->phy_id, NULL); cpu_slot->cpu =3D CPU(dev); + + if (lvms->acpi_ged) { + hotplug_handler_plug(HOTPLUG_HANDLER(lvms->acpi_ged), dev, &local_= err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + } + return; } =20 @@ -1667,6 +1716,7 @@ static void virt_class_init(ObjectClass *oc, void *da= ta) mc->numa_mem_supported =3D true; mc->auto_enable_numa_with_memhp =3D true; mc->auto_enable_numa_with_memdev =3D true; + mc->has_hotpluggable_cpus =3D true; mc->get_hotplug_handler =3D virt_get_hotplug_handler; mc->default_nic =3D "virtio-net-pci"; hc->plug =3D virt_device_plug_cb; --=20 2.39.3