diff options
| -rw-r--r-- | hw/i386/pc.c | 44 | ||||
| -rw-r--r-- | include/hw/boards.h | 26 | ||||
| -rw-r--r-- | include/hw/i386/pc.h | 1 |
3 files changed, 67 insertions, 4 deletions
diff --git a/hw/i386/pc.c b/hw/i386/pc.c index a469979..2ac97c4 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1131,10 +1131,17 @@ void pc_cpus_init(PCMachineState *pcms) exit(1); } - for (i = 0; i < smp_cpus; i++) { - cpu = pc_new_cpu(machine->cpu_model, x86_cpu_apic_id_from_index(i), - &error_fatal); - object_unref(OBJECT(cpu)); + pcms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) + + sizeof(CPUArchId) * max_cpus); + for (i = 0; i < max_cpus; i++) { + pcms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i); + pcms->possible_cpus->len++; + if (i < smp_cpus) { + cpu = pc_new_cpu(machine->cpu_model, x86_cpu_apic_id_from_index(i), + &error_fatal); + pcms->possible_cpus->cpus[i].cpu = CPU(cpu); + object_unref(OBJECT(cpu)); + } } /* tell smbios about cpuid version and features */ @@ -1657,9 +1664,19 @@ static void pc_dimm_unplug(HotplugHandler *hotplug_dev, error_propagate(errp, local_err); } +static int pc_apic_cmp(const void *a, const void *b) +{ + CPUArchId *apic_a = (CPUArchId *)a; + CPUArchId *apic_b = (CPUArchId *)b; + + return apic_a->arch_id - apic_b->arch_id; +} + static void pc_cpu_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { + CPUClass *cc = CPU_GET_CLASS(dev); + CPUArchId apic_id, *found_cpu; HotplugHandlerClass *hhc; Error *local_err = NULL; PCMachineState *pcms = PC_MACHINE(hotplug_dev); @@ -1682,6 +1699,13 @@ static void pc_cpu_plug(HotplugHandler *hotplug_dev, /* 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->cpu = CPU(dev); out: error_propagate(errp, local_err); } @@ -1924,6 +1948,17 @@ static unsigned pc_cpu_index_to_socket_id(unsigned cpu_index) return topo.pkg_id; } +static CPUArchIdList *pc_possible_cpu_arch_ids(MachineState *machine) +{ + PCMachineState *pcms = PC_MACHINE(machine); + int len = sizeof(CPUArchIdList) + + sizeof(CPUArchId) * (pcms->possible_cpus->len); + CPUArchIdList *list = g_malloc(len); + + memcpy(list, pcms->possible_cpus, len); + return list; +} + static void pc_machine_class_init(ObjectClass *oc, void *data) { MachineClass *mc = MACHINE_CLASS(oc); @@ -1946,6 +1981,7 @@ static void pc_machine_class_init(ObjectClass *oc, void *data) pcmc->save_tsc_khz = true; 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->default_boot_order = "cad"; mc->hot_add_cpu = pc_hot_add_cpu; mc->max_cpus = 255; diff --git a/include/hw/boards.h b/include/hw/boards.h index b5d7eae..4b3fdbe 100644 --- a/include/hw/boards.h +++ b/include/hw/boards.h @@ -8,6 +8,7 @@ #include "sysemu/accel.h" #include "hw/qdev.h" #include "qom/object.h" +#include "qom/cpu.h" void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner, const char *name, @@ -42,6 +43,26 @@ bool machine_dump_guest_core(MachineState *machine); bool machine_mem_merge(MachineState *machine); /** + * CPUArchId: + * @arch_id - architecture-dependent CPU ID of present or possible CPU + * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise + */ +typedef struct { + uint64_t arch_id; + struct CPUState *cpu; +} CPUArchId; + +/** + * CPUArchIdList: + * @len - number of @CPUArchId items in @cpus array + * @cpus - array of present or possible CPUs for current machine configuration + */ +typedef struct { + int len; + CPUArchId cpus[0]; +} CPUArchIdList; + +/** * MachineClass: * @get_hotplug_handler: this function is called during bus-less * device hotplug. If defined it returns pointer to an instance @@ -57,6 +78,10 @@ bool machine_mem_merge(MachineState *machine); * Set only by old machines because they need to keep * compatibility on code that exposed QEMU_VERSION to guests in * the past (and now use qemu_hw_version()). + * @possible_cpu_arch_ids: + * Returns an array of @CPUArchId architecture-dependent CPU IDs + * which includes CPU IDs for present and possible to hotplug CPUs. + * Caller is responsible for freeing returned list. */ struct MachineClass { /*< private >*/ @@ -98,6 +123,7 @@ struct MachineClass { HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); unsigned (*cpu_index_to_socket_id)(unsigned cpu_index); + CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine); }; /** diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index b049776..8c2bf7f 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -67,6 +67,7 @@ struct PCMachineState { /* CPU and apic information: */ bool apic_xrupt_override; unsigned apic_id_limit; + CPUArchIdList *possible_cpus; /* NUMA information: */ uint64_t numa_nodes; |