diff options
Diffstat (limited to 'hw')
| -rw-r--r-- | hw/i386/kvm/apic.c | 9 | ||||
| -rw-r--r-- | hw/i386/pc.c | 279 | ||||
| -rw-r--r-- | hw/intc/apic.c | 26 | ||||
| -rw-r--r-- | hw/intc/apic_common.c | 33 |
4 files changed, 288 insertions, 59 deletions
diff --git a/hw/i386/kvm/apic.c b/hw/i386/kvm/apic.c index c5983c79be..2bd0de82b4 100644 --- a/hw/i386/kvm/apic.c +++ b/hw/i386/kvm/apic.c @@ -184,19 +184,24 @@ static void kvm_apic_realize(DeviceState *dev, Error **errp) { APICCommonState *s = APIC_COMMON(dev); - memory_region_init_io(&s->io_memory, NULL, &kvm_apic_io_ops, s, "kvm-apic-msi", - APIC_SPACE_SIZE); + memory_region_init_io(&s->io_memory, OBJECT(s), &kvm_apic_io_ops, s, + "kvm-apic-msi", APIC_SPACE_SIZE); if (kvm_has_gsi_routing()) { msi_nonbroken = true; } } +static void kvm_apic_unrealize(DeviceState *dev, Error **errp) +{ +} + static void kvm_apic_class_init(ObjectClass *klass, void *data) { APICCommonClass *k = APIC_COMMON_CLASS(klass); k->realize = kvm_apic_realize; + k->unrealize = kvm_apic_unrealize; k->reset = kvm_apic_reset; k->set_base = kvm_apic_set_base; k->set_tpr = kvm_apic_set_tpr; diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 719884ff88..ac7a4d5a47 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -471,9 +471,6 @@ void pc_cmos_init(PCMachineState *pcms, rtc_set_memory(s, 0x5c, val >> 8); rtc_set_memory(s, 0x5d, val >> 16); - /* set the number of CPU */ - rtc_set_memory(s, 0x5f, smp_cpus - 1); - object_property_add_link(OBJECT(pcms), "rtc_state", TYPE_ISA_DEVICE, (Object **)&pcms->rtc, @@ -1090,6 +1087,17 @@ void pc_acpi_smi_interrupt(void *opaque, int irq, int level) } } +static int pc_present_cpus_count(PCMachineState *pcms) +{ + int i, boot_cpus = 0; + for (i = 0; i < pcms->possible_cpus->len; i++) { + if (pcms->possible_cpus->cpus[i].cpu) { + boot_cpus++; + } + } + return boot_cpus; +} + static X86CPU *pc_new_cpu(const char *typename, int64_t apic_id, Error **errp) { @@ -1122,18 +1130,6 @@ void pc_hot_add_cpu(const int64_t id, Error **errp) return; } - if (cpu_exists(apic_id)) { - error_setg(errp, "Unable to add CPU: %" PRIi64 - ", it already exists", id); - return; - } - - if (id >= max_cpus) { - error_setg(errp, "Unable to add CPU: %" PRIi64 - ", max allowed: %d", id, max_cpus - 1); - return; - } - if (apic_id >= ACPI_CPU_HOTPLUG_ID_LIMIT) { error_setg(errp, "Unable to add CPU: %" PRIi64 ", resulting APIC ID (%" PRIi64 ") is too large", @@ -1208,7 +1204,6 @@ void pc_cpus_init(PCMachineState *pcms) if (i < smp_cpus) { cpu = pc_new_cpu(typename, x86_cpu_apic_id_from_index(i), &error_fatal); - pcms->possible_cpus->cpus[i].cpu = CPU(cpu); object_unref(OBJECT(cpu)); } } @@ -1252,6 +1247,9 @@ void pc_machine_done(Notifier *notifier, void *data) PCMachineState, machine_done); PCIBus *bus = pcms->bus; + /* set the number of CPUs */ + rtc_set_memory(pcms->rtc, 0x5f, pc_present_cpus_count(pcms) - 1); + if (bus) { int extra_hosts = 0; @@ -1756,39 +1754,48 @@ static int pc_apic_cmp(const void *a, const void *b) return apic_a->arch_id - apic_b->arch_id; } +/* returns pointer to CPUArchId descriptor that matches CPU's apic_id + * in pcms->possible_cpus->cpus, if pcms->possible_cpus->cpus has no + * entry correponding to CPU's apic_id returns NULL. + */ +static CPUArchId *pc_find_cpu_slot(PCMachineState *pcms, CPUState *cpu, + int *idx) +{ + CPUClass *cc = CPU_GET_CLASS(cpu); + CPUArchId apic_id, *found_cpu; + + apic_id.arch_id = cc->get_arch_id(CPU(cpu)); + found_cpu = bsearch(&apic_id, pcms->possible_cpus->cpus, + pcms->possible_cpus->len, sizeof(*pcms->possible_cpus->cpus), + pc_apic_cmp); + if (found_cpu && idx) { + *idx = found_cpu - pcms->possible_cpus->cpus; + } + return found_cpu; +} + static void pc_cpu_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - CPUClass *cc = CPU_GET_CLASS(dev); - CPUArchId apic_id, *found_cpu; + CPUArchId *found_cpu; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); - if (!dev->hotplugged) { - goto out; - } - - if (!pcms->acpi_dev) { - error_setg(&local_err, - "cpu hotplug is not enabled: missing acpi device"); - goto out; + if (pcms->acpi_dev) { + hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); + hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); + if (local_err) { + goto out; + } } - hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); - hhc->plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); - if (local_err) { - goto out; + if (dev->hotplugged) { + /* increment the number of CPUs */ + rtc_set_memory(pcms->rtc, 0x5f, rtc_get_memory(pcms->rtc, 0x5f) + 1); } - /* increment the number of CPUs */ - rtc_set_memory(pcms->rtc, 0x5f, rtc_get_memory(pcms->rtc, 0x5f) + 1); - - apic_id.arch_id = cc->get_arch_id(CPU(dev)); - found_cpu = bsearch(&apic_id, pcms->possible_cpus->cpus, - pcms->possible_cpus->len, sizeof(*pcms->possible_cpus->cpus), - pc_apic_cmp); - assert(found_cpu); + found_cpu = pc_find_cpu_slot(pcms, CPU(dev), NULL); found_cpu->cpu = CPU(dev); out: error_propagate(errp, local_err); @@ -1796,10 +1803,35 @@ out: static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + int idx = -1; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); + pc_find_cpu_slot(pcms, CPU(dev), &idx); + assert(idx != -1); + if (idx == 0) { + error_setg(&local_err, "Boot CPU is unpluggable"); + goto out; + } + + if (idx < pcms->possible_cpus->len - 1 && + pcms->possible_cpus->cpus[idx + 1].cpu != NULL) { + X86CPU *cpu; + + for (idx = pcms->possible_cpus->len - 1; + pcms->possible_cpus->cpus[idx].cpu == NULL; idx--) { + ;; + } + + cpu = X86_CPU(pcms->possible_cpus->cpus[idx].cpu); + error_setg(&local_err, "CPU [socket-id: %u, core-id: %u," + " thread-id: %u] should be removed first", + cpu->socket_id, cpu->core_id, cpu->thread_id); + goto out; + + } + hhc = HOTPLUG_HANDLER_GET_CLASS(pcms->acpi_dev); hhc->unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err); @@ -1815,6 +1847,7 @@ static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, static void pc_cpu_unplug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + CPUArchId *found_cpu; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); @@ -1826,17 +1859,129 @@ static void pc_cpu_unplug_cb(HotplugHandler *hotplug_dev, goto out; } - /* - * TODO: enable unplug once generic CPU remove bits land - * for now guest will be able to eject CPU ACPI wise but - * it will come back again on machine reset. - */ - /* object_unparent(OBJECT(dev)); */ + found_cpu = pc_find_cpu_slot(pcms, CPU(dev), NULL); + found_cpu->cpu = NULL; + object_unparent(OBJECT(dev)); + rtc_set_memory(pcms->rtc, 0x5f, rtc_get_memory(pcms->rtc, 0x5f) - 1); out: error_propagate(errp, local_err); } +static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + int idx; + CPUArchId *cpu_slot; + X86CPUTopoInfo topo; + X86CPU *cpu = X86_CPU(dev); + PCMachineState *pcms = PC_MACHINE(hotplug_dev); + + /* if APIC ID is not set, set it based on socket/core/thread properties */ + if (cpu->apic_id == UNASSIGNED_APIC_ID) { + int max_socket = (max_cpus - 1) / smp_threads / smp_cores; + + if (cpu->socket_id < 0) { + error_setg(errp, "CPU socket-id is not set"); + return; + } else if (cpu->socket_id > max_socket) { + error_setg(errp, "Invalid CPU socket-id: %u must be in range 0:%u", + cpu->socket_id, max_socket); + return; + } + if (cpu->core_id < 0) { + error_setg(errp, "CPU core-id is not set"); + return; + } else if (cpu->core_id > (smp_cores - 1)) { + error_setg(errp, "Invalid CPU core-id: %u must be in range 0:%u", + cpu->core_id, smp_cores - 1); + return; + } + if (cpu->thread_id < 0) { + error_setg(errp, "CPU thread-id is not set"); + return; + } else if (cpu->thread_id > (smp_threads - 1)) { + error_setg(errp, "Invalid CPU thread-id: %u must be in range 0:%u", + cpu->thread_id, smp_threads - 1); + return; + } + + topo.pkg_id = cpu->socket_id; + topo.core_id = cpu->core_id; + topo.smt_id = cpu->thread_id; + cpu->apic_id = apicid_from_topo_ids(smp_cores, smp_threads, &topo); + } + + cpu_slot = pc_find_cpu_slot(pcms, CPU(dev), &idx); + if (!cpu_slot) { + x86_topo_ids_from_apicid(cpu->apic_id, smp_cores, smp_threads, &topo); + error_setg(errp, "Invalid CPU [socket: %u, core: %u, thread: %u] with" + " APIC ID %" PRIu32 ", valid index range 0:%d", + topo.pkg_id, topo.core_id, topo.smt_id, cpu->apic_id, + pcms->possible_cpus->len - 1); + return; + } + + if (cpu_slot->cpu) { + error_setg(errp, "CPU[%d] with APIC ID %" PRIu32 " exists", + idx, cpu->apic_id); + return; + } + + if (idx != 0 && pcms->possible_cpus->cpus[idx - 1].cpu == NULL) { + PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); + + for (idx = 1; pcms->possible_cpus->cpus[idx].cpu != NULL; idx++) { + ;; + } + + x86_topo_ids_from_apicid(pcms->possible_cpus->cpus[idx].arch_id, + smp_cores, smp_threads, &topo); + + if (!pcmc->legacy_cpu_hotplug) { + error_setg(errp, "CPU [socket: %u, core: %u, thread: %u] should be" + " added first", topo.pkg_id, topo.core_id, topo.smt_id); + return; + } + } + + /* if 'address' properties socket-id/core-id/thread-id are not set, set them + * so that query_hotpluggable_cpus would show correct values + */ + /* TODO: move socket_id/core_id/thread_id checks into x86_cpu_realizefn() + * once -smp refactoring is complete and there will be CPU private + * CPUState::nr_cores and CPUState::nr_threads fields instead of globals */ + x86_topo_ids_from_apicid(cpu->apic_id, smp_cores, smp_threads, &topo); + if (cpu->socket_id != -1 && cpu->socket_id != topo.pkg_id) { + error_setg(errp, "property socket-id: %u doesn't match set apic-id:" + " 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id, topo.pkg_id); + return; + } + cpu->socket_id = topo.pkg_id; + + if (cpu->core_id != -1 && cpu->core_id != topo.core_id) { + error_setg(errp, "property core-id: %u doesn't match set apic-id:" + " 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id, topo.core_id); + return; + } + cpu->core_id = topo.core_id; + + if (cpu->thread_id != -1 && cpu->thread_id != topo.smt_id) { + error_setg(errp, "property thread-id: %u doesn't match set apic-id:" + " 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id, topo.smt_id); + return; + } + cpu->thread_id = topo.smt_id; +} + +static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, + DeviceState *dev, Error **errp) +{ + if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) { + pc_cpu_pre_plug(hotplug_dev, dev, errp); + } +} + static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { @@ -2090,6 +2235,50 @@ static CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *machine) return list; } +static HotpluggableCPUList *pc_query_hotpluggable_cpus(MachineState *machine) +{ + int i; + CPUState *cpu; + HotpluggableCPUList *head = NULL; + PCMachineState *pcms = PC_MACHINE(machine); + const char *cpu_type; + + cpu = pcms->possible_cpus->cpus[0].cpu; + assert(cpu); /* BSP is always present */ + cpu_type = object_class_get_name(OBJECT_CLASS(CPU_GET_CLASS(cpu))); + + for (i = 0; i < pcms->possible_cpus->len; i++) { + X86CPUTopoInfo topo; + HotpluggableCPUList *list_item = g_new0(typeof(*list_item), 1); + HotpluggableCPU *cpu_item = g_new0(typeof(*cpu_item), 1); + CpuInstanceProperties *cpu_props = g_new0(typeof(*cpu_props), 1); + const uint32_t apic_id = pcms->possible_cpus->cpus[i].arch_id; + + x86_topo_ids_from_apicid(apic_id, smp_cores, smp_threads, &topo); + + cpu_item->type = g_strdup(cpu_type); + cpu_item->vcpus_count = 1; + cpu_props->has_socket_id = true; + cpu_props->socket_id = topo.pkg_id; + cpu_props->has_core_id = true; + cpu_props->core_id = topo.core_id; + cpu_props->has_thread_id = true; + cpu_props->thread_id = topo.smt_id; + cpu_item->props = cpu_props; + + cpu = pcms->possible_cpus->cpus[i].cpu; + if (cpu) { + cpu_item->has_qom_path = true; + cpu_item->qom_path = object_get_canonical_path(OBJECT(cpu)); + } + + list_item->value = cpu_item; + list_item->next = head; + head = list_item; + } + return head; +} + static void x86_nmi(NMIState *n, int cpu_index, Error **errp) { /* cpu index isn't used */ @@ -2130,10 +2319,12 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) mc->get_hotplug_handler = pc_get_hotpug_handler; mc->cpu_index_to_socket_id = pc_cpu_index_to_socket_id; mc->possible_cpu_arch_ids = pc_possible_cpu_arch_ids; + mc->query_hotpluggable_cpus = pc_query_hotpluggable_cpus; mc->default_boot_order = "cad"; mc->hot_add_cpu = pc_hot_add_cpu; mc->max_cpus = 255; mc->reset = pc_machine_reset; + hc->pre_plug = pc_machine_device_pre_plug_cb; hc->plug = pc_machine_device_plug_cb; hc->unplug_request = pc_machine_device_unplug_request_cb; hc->unplug = pc_machine_device_unplug_cb; diff --git a/hw/intc/apic.c b/hw/intc/apic.c index e1ab9354c6..45887d99c0 100644 --- a/hw/intc/apic.c +++ b/hw/intc/apic.c @@ -28,7 +28,9 @@ #include "trace.h" #include "hw/i386/pc.h" #include "hw/i386/apic-msidef.h" +#include "qapi/error.h" +#define MAX_APICS 255 #define MAX_APIC_WORDS 8 #define SYNC_FROM_VAPIC 0x1 @@ -419,7 +421,7 @@ static int apic_find_dest(uint8_t dest) int i; if (apic && apic->id == dest) - return dest; /* shortcut in case apic->id == apic->idx */ + return dest; /* shortcut in case apic->id == local_apics[dest]->id */ for (i = 0; i < MAX_APICS; i++) { apic = local_apics[i]; @@ -502,14 +504,14 @@ static void apic_deliver(DeviceState *dev, uint8_t dest, uint8_t dest_mode, break; case 1: memset(deliver_bitmask, 0x00, sizeof(deliver_bitmask)); - apic_set_bit(deliver_bitmask, s->idx); + apic_set_bit(deliver_bitmask, s->id); break; case 2: memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask)); break; case 3: memset(deliver_bitmask, 0xff, sizeof(deliver_bitmask)); - apic_reset_bit(deliver_bitmask, s->idx); + apic_reset_bit(deliver_bitmask, s->id); break; } @@ -870,20 +872,36 @@ static void apic_realize(DeviceState *dev, Error **errp) { APICCommonState *s = APIC_COMMON(dev); + if (s->id >= MAX_APICS) { + error_setg(errp, "%s initialization failed. APIC ID %d is invalid", + object_get_typename(OBJECT(dev)), s->id); + return; + } + memory_region_init_io(&s->io_memory, OBJECT(s), &apic_io_ops, s, "apic-msi", APIC_SPACE_SIZE); s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, apic_timer, s); - local_apics[s->idx] = s; + local_apics[s->id] = s; msi_nonbroken = true; } +static void apic_unrealize(DeviceState *dev, Error **errp) +{ + APICCommonState *s = APIC_COMMON(dev); + + timer_del(s->timer); + timer_free(s->timer); + local_apics[s->id] = NULL; +} + static void apic_class_init(ObjectClass *klass, void *data) { APICCommonClass *k = APIC_COMMON_CLASS(klass); k->realize = apic_realize; + k->unrealize = apic_unrealize; k->set_base = apic_set_base; k->set_tpr = apic_set_tpr; k->get_tpr = apic_get_tpr; diff --git a/hw/intc/apic_common.c b/hw/intc/apic_common.c index e6eb694de0..14ac43c186 100644 --- a/hw/intc/apic_common.c +++ b/hw/intc/apic_common.c @@ -294,19 +294,14 @@ static int apic_load_old(QEMUFile *f, void *opaque, int version_id) return 0; } +static const VMStateDescription vmstate_apic_common; + static void apic_common_realize(DeviceState *dev, Error **errp) { APICCommonState *s = APIC_COMMON(dev); APICCommonClass *info; static DeviceState *vapic; - static int apic_no; - - if (apic_no >= MAX_APICS) { - error_setg(errp, "%s initialization failed.", - object_get_typename(OBJECT(dev))); - return; - } - s->idx = apic_no++; + int instance_id = s->id; info = APIC_COMMON_GET_CLASS(s); info->realize(dev, errp); @@ -321,6 +316,24 @@ static void apic_common_realize(DeviceState *dev, Error **errp) info->enable_tpr_reporting(s, true); } + if (s->legacy_instance_id) { + instance_id = -1; + } + vmstate_register_with_alias_id(NULL, instance_id, &vmstate_apic_common, + s, -1, 0); +} + +static void apic_common_unrealize(DeviceState *dev, Error **errp) +{ + APICCommonState *s = APIC_COMMON(dev); + APICCommonClass *info = APIC_COMMON_GET_CLASS(s); + + vmstate_unregister(NULL, &vmstate_apic_common, s); + info->unrealize(dev, errp); + + if (apic_report_tpr_access && info->enable_tpr_reporting) { + info->enable_tpr_reporting(s, false); + } } static int apic_pre_load(void *opaque) @@ -418,6 +431,8 @@ static Property apic_properties_common[] = { DEFINE_PROP_UINT8("version", APICCommonState, version, 0x14), DEFINE_PROP_BIT("vapic", APICCommonState, vapic_control, VAPIC_ENABLE_BIT, true), + DEFINE_PROP_BOOL("legacy-instance-id", APICCommonState, legacy_instance_id, + false), DEFINE_PROP_END_OF_LIST(), }; @@ -425,10 +440,10 @@ static void apic_common_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); - dc->vmsd = &vmstate_apic_common; dc->reset = apic_reset_common; dc->props = apic_properties_common; dc->realize = apic_common_realize; + dc->unrealize = apic_common_unrealize; /* * Reason: APIC and CPU need to be wired up by * x86_cpu_apic_create() |