1 #include "qemu/osdep.h" 2 #include "hw/boards.h" 3 #include "migration/vmstate.h" 4 #include "hw/acpi/cpu.h" 5 #include "qapi/error.h" 6 #include "qapi/qapi-events-misc.h" 7 #include "trace.h" 8 #include "sysemu/numa.h" 9 10 #define ACPI_CPU_HOTPLUG_REG_LEN 12 11 #define ACPI_CPU_SELECTOR_OFFSET_WR 0 12 #define ACPI_CPU_FLAGS_OFFSET_RW 4 13 #define ACPI_CPU_CMD_OFFSET_WR 5 14 #define ACPI_CPU_CMD_DATA_OFFSET_RW 8 15 #define ACPI_CPU_CMD_DATA2_OFFSET_R 0 16 17 enum { 18 CPHP_GET_NEXT_CPU_WITH_EVENT_CMD = 0, 19 CPHP_OST_EVENT_CMD = 1, 20 CPHP_OST_STATUS_CMD = 2, 21 CPHP_GET_CPU_ID_CMD = 3, 22 CPHP_CMD_MAX 23 }; 24 25 static ACPIOSTInfo *acpi_cpu_device_status(int idx, AcpiCpuStatus *cdev) 26 { 27 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); 28 29 info->slot_type = ACPI_SLOT_TYPE_CPU; 30 info->slot = g_strdup_printf("%d", idx); 31 info->source = cdev->ost_event; 32 info->status = cdev->ost_status; 33 if (cdev->cpu) { 34 DeviceState *dev = DEVICE(cdev->cpu); 35 if (dev->id) { 36 info->device = g_strdup(dev->id); 37 info->has_device = true; 38 } 39 } 40 return info; 41 } 42 43 void acpi_cpu_ospm_status(CPUHotplugState *cpu_st, ACPIOSTInfoList ***list) 44 { 45 int i; 46 47 for (i = 0; i < cpu_st->dev_count; i++) { 48 ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1); 49 elem->value = acpi_cpu_device_status(i, &cpu_st->devs[i]); 50 elem->next = NULL; 51 **list = elem; 52 *list = &elem->next; 53 } 54 } 55 56 static uint64_t cpu_hotplug_rd(void *opaque, hwaddr addr, unsigned size) 57 { 58 uint64_t val = 0; 59 CPUHotplugState *cpu_st = opaque; 60 AcpiCpuStatus *cdev; 61 62 if (cpu_st->selector >= cpu_st->dev_count) { 63 return val; 64 } 65 66 cdev = &cpu_st->devs[cpu_st->selector]; 67 switch (addr) { 68 case ACPI_CPU_FLAGS_OFFSET_RW: /* pack and return is_* fields */ 69 val |= cdev->cpu ? 1 : 0; 70 val |= cdev->is_inserting ? 2 : 0; 71 val |= cdev->is_removing ? 4 : 0; 72 trace_cpuhp_acpi_read_flags(cpu_st->selector, val); 73 break; 74 case ACPI_CPU_CMD_DATA_OFFSET_RW: 75 switch (cpu_st->command) { 76 case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD: 77 val = cpu_st->selector; 78 break; 79 case CPHP_GET_CPU_ID_CMD: 80 val = cdev->arch_id & 0xFFFFFFFF; 81 break; 82 default: 83 break; 84 } 85 trace_cpuhp_acpi_read_cmd_data(cpu_st->selector, val); 86 break; 87 case ACPI_CPU_CMD_DATA2_OFFSET_R: 88 switch (cpu_st->command) { 89 case CPHP_GET_NEXT_CPU_WITH_EVENT_CMD: 90 val = 0; 91 break; 92 case CPHP_GET_CPU_ID_CMD: 93 val = cdev->arch_id >> 32; 94 break; 95 default: 96 break; 97 } 98 trace_cpuhp_acpi_read_cmd_data2(cpu_st->selector, val); 99 break; 100 default: 101 break; 102 } 103 return val; 104 } 105 106 static void cpu_hotplug_wr(void *opaque, hwaddr addr, uint64_t data, 107 unsigned int size) 108 { 109 CPUHotplugState *cpu_st = opaque; 110 AcpiCpuStatus *cdev; 111 ACPIOSTInfo *info; 112 113 assert(cpu_st->dev_count); 114 115 if (addr) { 116 if (cpu_st->selector >= cpu_st->dev_count) { 117 trace_cpuhp_acpi_invalid_idx_selected(cpu_st->selector); 118 return; 119 } 120 } 121 122 switch (addr) { 123 case ACPI_CPU_SELECTOR_OFFSET_WR: /* current CPU selector */ 124 cpu_st->selector = data; 125 trace_cpuhp_acpi_write_idx(cpu_st->selector); 126 break; 127 case ACPI_CPU_FLAGS_OFFSET_RW: /* set is_* fields */ 128 cdev = &cpu_st->devs[cpu_st->selector]; 129 if (data & 2) { /* clear insert event */ 130 cdev->is_inserting = false; 131 trace_cpuhp_acpi_clear_inserting_evt(cpu_st->selector); 132 } else if (data & 4) { /* clear remove event */ 133 cdev->is_removing = false; 134 trace_cpuhp_acpi_clear_remove_evt(cpu_st->selector); 135 } else if (data & 8) { 136 DeviceState *dev = NULL; 137 HotplugHandler *hotplug_ctrl = NULL; 138 139 if (!cdev->cpu || cdev->cpu == first_cpu) { 140 trace_cpuhp_acpi_ejecting_invalid_cpu(cpu_st->selector); 141 break; 142 } 143 144 trace_cpuhp_acpi_ejecting_cpu(cpu_st->selector); 145 dev = DEVICE(cdev->cpu); 146 hotplug_ctrl = qdev_get_hotplug_handler(dev); 147 hotplug_handler_unplug(hotplug_ctrl, dev, NULL); 148 object_unparent(OBJECT(dev)); 149 } 150 break; 151 case ACPI_CPU_CMD_OFFSET_WR: 152 trace_cpuhp_acpi_write_cmd(cpu_st->selector, data); 153 if (data < CPHP_CMD_MAX) { 154 cpu_st->command = data; 155 if (cpu_st->command == CPHP_GET_NEXT_CPU_WITH_EVENT_CMD) { 156 uint32_t iter = cpu_st->selector; 157 158 do { 159 cdev = &cpu_st->devs[iter]; 160 if (cdev->is_inserting || cdev->is_removing) { 161 cpu_st->selector = iter; 162 trace_cpuhp_acpi_cpu_has_events(cpu_st->selector, 163 cdev->is_inserting, cdev->is_removing); 164 break; 165 } 166 iter = iter + 1 < cpu_st->dev_count ? iter + 1 : 0; 167 } while (iter != cpu_st->selector); 168 } 169 } 170 break; 171 case ACPI_CPU_CMD_DATA_OFFSET_RW: 172 switch (cpu_st->command) { 173 case CPHP_OST_EVENT_CMD: { 174 cdev = &cpu_st->devs[cpu_st->selector]; 175 cdev->ost_event = data; 176 trace_cpuhp_acpi_write_ost_ev(cpu_st->selector, cdev->ost_event); 177 break; 178 } 179 case CPHP_OST_STATUS_CMD: { 180 cdev = &cpu_st->devs[cpu_st->selector]; 181 cdev->ost_status = data; 182 info = acpi_cpu_device_status(cpu_st->selector, cdev); 183 qapi_event_send_acpi_device_ost(info); 184 qapi_free_ACPIOSTInfo(info); 185 trace_cpuhp_acpi_write_ost_status(cpu_st->selector, 186 cdev->ost_status); 187 break; 188 } 189 default: 190 break; 191 } 192 break; 193 default: 194 break; 195 } 196 } 197 198 static const MemoryRegionOps cpu_hotplug_ops = { 199 .read = cpu_hotplug_rd, 200 .write = cpu_hotplug_wr, 201 .endianness = DEVICE_LITTLE_ENDIAN, 202 .valid = { 203 .min_access_size = 1, 204 .max_access_size = 4, 205 }, 206 }; 207 208 void cpu_hotplug_hw_init(MemoryRegion *as, Object *owner, 209 CPUHotplugState *state, hwaddr base_addr) 210 { 211 MachineState *machine = MACHINE(qdev_get_machine()); 212 MachineClass *mc = MACHINE_GET_CLASS(machine); 213 const CPUArchIdList *id_list; 214 int i; 215 216 assert(mc->possible_cpu_arch_ids); 217 id_list = mc->possible_cpu_arch_ids(machine); 218 state->dev_count = id_list->len; 219 state->devs = g_new0(typeof(*state->devs), state->dev_count); 220 for (i = 0; i < id_list->len; i++) { 221 state->devs[i].cpu = CPU(id_list->cpus[i].cpu); 222 state->devs[i].arch_id = id_list->cpus[i].arch_id; 223 } 224 memory_region_init_io(&state->ctrl_reg, owner, &cpu_hotplug_ops, state, 225 "acpi-mem-hotplug", ACPI_CPU_HOTPLUG_REG_LEN); 226 memory_region_add_subregion(as, base_addr, &state->ctrl_reg); 227 } 228 229 static AcpiCpuStatus *get_cpu_status(CPUHotplugState *cpu_st, DeviceState *dev) 230 { 231 CPUClass *k = CPU_GET_CLASS(dev); 232 uint64_t cpu_arch_id = k->get_arch_id(CPU(dev)); 233 int i; 234 235 for (i = 0; i < cpu_st->dev_count; i++) { 236 if (cpu_arch_id == cpu_st->devs[i].arch_id) { 237 return &cpu_st->devs[i]; 238 } 239 } 240 return NULL; 241 } 242 243 void acpi_cpu_plug_cb(HotplugHandler *hotplug_dev, 244 CPUHotplugState *cpu_st, DeviceState *dev, Error **errp) 245 { 246 AcpiCpuStatus *cdev; 247 248 cdev = get_cpu_status(cpu_st, dev); 249 if (!cdev) { 250 return; 251 } 252 253 cdev->cpu = CPU(dev); 254 if (dev->hotplugged) { 255 cdev->is_inserting = true; 256 acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); 257 } 258 } 259 260 void acpi_cpu_unplug_request_cb(HotplugHandler *hotplug_dev, 261 CPUHotplugState *cpu_st, 262 DeviceState *dev, Error **errp) 263 { 264 AcpiCpuStatus *cdev; 265 266 cdev = get_cpu_status(cpu_st, dev); 267 if (!cdev) { 268 return; 269 } 270 271 cdev->is_removing = true; 272 acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS); 273 } 274 275 void acpi_cpu_unplug_cb(CPUHotplugState *cpu_st, 276 DeviceState *dev, Error **errp) 277 { 278 AcpiCpuStatus *cdev; 279 280 cdev = get_cpu_status(cpu_st, dev); 281 if (!cdev) { 282 return; 283 } 284 285 cdev->cpu = NULL; 286 } 287 288 static const VMStateDescription vmstate_cpuhp_sts = { 289 .name = "CPU hotplug device state", 290 .version_id = 1, 291 .minimum_version_id = 1, 292 .minimum_version_id_old = 1, 293 .fields = (VMStateField[]) { 294 VMSTATE_BOOL(is_inserting, AcpiCpuStatus), 295 VMSTATE_BOOL(is_removing, AcpiCpuStatus), 296 VMSTATE_UINT32(ost_event, AcpiCpuStatus), 297 VMSTATE_UINT32(ost_status, AcpiCpuStatus), 298 VMSTATE_END_OF_LIST() 299 } 300 }; 301 302 const VMStateDescription vmstate_cpu_hotplug = { 303 .name = "CPU hotplug state", 304 .version_id = 1, 305 .minimum_version_id = 1, 306 .minimum_version_id_old = 1, 307 .fields = (VMStateField[]) { 308 VMSTATE_UINT32(selector, CPUHotplugState), 309 VMSTATE_UINT8(command, CPUHotplugState), 310 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, CPUHotplugState, dev_count, 311 vmstate_cpuhp_sts, AcpiCpuStatus), 312 VMSTATE_END_OF_LIST() 313 } 314 }; 315 316 #define CPU_NAME_FMT "C%.03X" 317 #define CPUHP_RES_DEVICE "PRES" 318 #define CPU_LOCK "CPLK" 319 #define CPU_STS_METHOD "CSTA" 320 #define CPU_SCAN_METHOD "CSCN" 321 #define CPU_NOTIFY_METHOD "CTFY" 322 #define CPU_EJECT_METHOD "CEJ0" 323 #define CPU_OST_METHOD "COST" 324 325 #define CPU_ENABLED "CPEN" 326 #define CPU_SELECTOR "CSEL" 327 #define CPU_COMMAND "CCMD" 328 #define CPU_DATA "CDAT" 329 #define CPU_INSERT_EVENT "CINS" 330 #define CPU_REMOVE_EVENT "CRMV" 331 #define CPU_EJECT_EVENT "CEJ0" 332 333 void build_cpus_aml(Aml *table, MachineState *machine, CPUHotplugFeatures opts, 334 hwaddr io_base, 335 const char *res_root, 336 const char *event_handler_method) 337 { 338 Aml *ifctx; 339 Aml *field; 340 Aml *method; 341 Aml *cpu_ctrl_dev; 342 Aml *cpus_dev; 343 Aml *zero = aml_int(0); 344 Aml *one = aml_int(1); 345 Aml *sb_scope = aml_scope("_SB"); 346 MachineClass *mc = MACHINE_GET_CLASS(machine); 347 const CPUArchIdList *arch_ids = mc->possible_cpu_arch_ids(machine); 348 char *cphp_res_path = g_strdup_printf("%s." CPUHP_RES_DEVICE, res_root); 349 Object *obj = object_resolve_path_type("", TYPE_ACPI_DEVICE_IF, NULL); 350 AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(obj); 351 AcpiDeviceIf *adev = ACPI_DEVICE_IF(obj); 352 353 cpu_ctrl_dev = aml_device("%s", cphp_res_path); 354 { 355 Aml *crs; 356 357 aml_append(cpu_ctrl_dev, 358 aml_name_decl("_HID", aml_eisaid("PNP0A06"))); 359 aml_append(cpu_ctrl_dev, 360 aml_name_decl("_UID", aml_string("CPU Hotplug resources"))); 361 aml_append(cpu_ctrl_dev, aml_mutex(CPU_LOCK, 0)); 362 363 crs = aml_resource_template(); 364 aml_append(crs, aml_io(AML_DECODE16, io_base, io_base, 1, 365 ACPI_CPU_HOTPLUG_REG_LEN)); 366 aml_append(cpu_ctrl_dev, aml_name_decl("_CRS", crs)); 367 368 /* declare CPU hotplug MMIO region with related access fields */ 369 aml_append(cpu_ctrl_dev, 370 aml_operation_region("PRST", AML_SYSTEM_IO, aml_int(io_base), 371 ACPI_CPU_HOTPLUG_REG_LEN)); 372 373 field = aml_field("PRST", AML_BYTE_ACC, AML_NOLOCK, 374 AML_WRITE_AS_ZEROS); 375 aml_append(field, aml_reserved_field(ACPI_CPU_FLAGS_OFFSET_RW * 8)); 376 /* 1 if enabled, read only */ 377 aml_append(field, aml_named_field(CPU_ENABLED, 1)); 378 /* (read) 1 if has a insert event. (write) 1 to clear event */ 379 aml_append(field, aml_named_field(CPU_INSERT_EVENT, 1)); 380 /* (read) 1 if has a remove event. (write) 1 to clear event */ 381 aml_append(field, aml_named_field(CPU_REMOVE_EVENT, 1)); 382 /* initiates device eject, write only */ 383 aml_append(field, aml_named_field(CPU_EJECT_EVENT, 1)); 384 aml_append(field, aml_reserved_field(4)); 385 aml_append(field, aml_named_field(CPU_COMMAND, 8)); 386 aml_append(cpu_ctrl_dev, field); 387 388 field = aml_field("PRST", AML_DWORD_ACC, AML_NOLOCK, AML_PRESERVE); 389 /* CPU selector, write only */ 390 aml_append(field, aml_named_field(CPU_SELECTOR, 32)); 391 /* flags + cmd + 2byte align */ 392 aml_append(field, aml_reserved_field(4 * 8)); 393 aml_append(field, aml_named_field(CPU_DATA, 32)); 394 aml_append(cpu_ctrl_dev, field); 395 396 if (opts.has_legacy_cphp) { 397 method = aml_method("_INI", 0, AML_SERIALIZED); 398 /* switch off legacy CPU hotplug HW and use new one, 399 * on reboot system is in new mode and writing 0 400 * in CPU_SELECTOR selects BSP, which is NOP at 401 * the time _INI is called */ 402 aml_append(method, aml_store(zero, aml_name(CPU_SELECTOR))); 403 aml_append(cpu_ctrl_dev, method); 404 } 405 } 406 aml_append(sb_scope, cpu_ctrl_dev); 407 408 cpus_dev = aml_device("\\_SB.CPUS"); 409 { 410 int i; 411 Aml *ctrl_lock = aml_name("%s.%s", cphp_res_path, CPU_LOCK); 412 Aml *cpu_selector = aml_name("%s.%s", cphp_res_path, CPU_SELECTOR); 413 Aml *is_enabled = aml_name("%s.%s", cphp_res_path, CPU_ENABLED); 414 Aml *cpu_cmd = aml_name("%s.%s", cphp_res_path, CPU_COMMAND); 415 Aml *cpu_data = aml_name("%s.%s", cphp_res_path, CPU_DATA); 416 Aml *ins_evt = aml_name("%s.%s", cphp_res_path, CPU_INSERT_EVENT); 417 Aml *rm_evt = aml_name("%s.%s", cphp_res_path, CPU_REMOVE_EVENT); 418 Aml *ej_evt = aml_name("%s.%s", cphp_res_path, CPU_EJECT_EVENT); 419 420 aml_append(cpus_dev, aml_name_decl("_HID", aml_string("ACPI0010"))); 421 aml_append(cpus_dev, aml_name_decl("_CID", aml_eisaid("PNP0A05"))); 422 423 method = aml_method(CPU_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); 424 for (i = 0; i < arch_ids->len; i++) { 425 Aml *cpu = aml_name(CPU_NAME_FMT, i); 426 Aml *uid = aml_arg(0); 427 Aml *event = aml_arg(1); 428 429 ifctx = aml_if(aml_equal(uid, aml_int(i))); 430 { 431 aml_append(ifctx, aml_notify(cpu, event)); 432 } 433 aml_append(method, ifctx); 434 } 435 aml_append(cpus_dev, method); 436 437 method = aml_method(CPU_STS_METHOD, 1, AML_SERIALIZED); 438 { 439 Aml *idx = aml_arg(0); 440 Aml *sta = aml_local(0); 441 442 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 443 aml_append(method, aml_store(idx, cpu_selector)); 444 aml_append(method, aml_store(zero, sta)); 445 ifctx = aml_if(aml_equal(is_enabled, one)); 446 { 447 aml_append(ifctx, aml_store(aml_int(0xF), sta)); 448 } 449 aml_append(method, ifctx); 450 aml_append(method, aml_release(ctrl_lock)); 451 aml_append(method, aml_return(sta)); 452 } 453 aml_append(cpus_dev, method); 454 455 method = aml_method(CPU_EJECT_METHOD, 1, AML_SERIALIZED); 456 { 457 Aml *idx = aml_arg(0); 458 459 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 460 aml_append(method, aml_store(idx, cpu_selector)); 461 aml_append(method, aml_store(one, ej_evt)); 462 aml_append(method, aml_release(ctrl_lock)); 463 } 464 aml_append(cpus_dev, method); 465 466 method = aml_method(CPU_SCAN_METHOD, 0, AML_SERIALIZED); 467 { 468 Aml *else_ctx; 469 Aml *while_ctx; 470 Aml *has_event = aml_local(0); 471 Aml *dev_chk = aml_int(1); 472 Aml *eject_req = aml_int(3); 473 Aml *next_cpu_cmd = aml_int(CPHP_GET_NEXT_CPU_WITH_EVENT_CMD); 474 475 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 476 aml_append(method, aml_store(one, has_event)); 477 while_ctx = aml_while(aml_equal(has_event, one)); 478 { 479 /* clear loop exit condition, ins_evt/rm_evt checks 480 * will set it to 1 while next_cpu_cmd returns a CPU 481 * with events */ 482 aml_append(while_ctx, aml_store(zero, has_event)); 483 aml_append(while_ctx, aml_store(next_cpu_cmd, cpu_cmd)); 484 ifctx = aml_if(aml_equal(ins_evt, one)); 485 { 486 aml_append(ifctx, 487 aml_call2(CPU_NOTIFY_METHOD, cpu_data, dev_chk)); 488 aml_append(ifctx, aml_store(one, ins_evt)); 489 aml_append(ifctx, aml_store(one, has_event)); 490 } 491 aml_append(while_ctx, ifctx); 492 else_ctx = aml_else(); 493 ifctx = aml_if(aml_equal(rm_evt, one)); 494 { 495 aml_append(ifctx, 496 aml_call2(CPU_NOTIFY_METHOD, cpu_data, eject_req)); 497 aml_append(ifctx, aml_store(one, rm_evt)); 498 aml_append(ifctx, aml_store(one, has_event)); 499 } 500 aml_append(else_ctx, ifctx); 501 aml_append(while_ctx, else_ctx); 502 } 503 aml_append(method, while_ctx); 504 aml_append(method, aml_release(ctrl_lock)); 505 } 506 aml_append(cpus_dev, method); 507 508 method = aml_method(CPU_OST_METHOD, 4, AML_SERIALIZED); 509 { 510 Aml *uid = aml_arg(0); 511 Aml *ev_cmd = aml_int(CPHP_OST_EVENT_CMD); 512 Aml *st_cmd = aml_int(CPHP_OST_STATUS_CMD); 513 514 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 515 aml_append(method, aml_store(uid, cpu_selector)); 516 aml_append(method, aml_store(ev_cmd, cpu_cmd)); 517 aml_append(method, aml_store(aml_arg(1), cpu_data)); 518 aml_append(method, aml_store(st_cmd, cpu_cmd)); 519 aml_append(method, aml_store(aml_arg(2), cpu_data)); 520 aml_append(method, aml_release(ctrl_lock)); 521 } 522 aml_append(cpus_dev, method); 523 524 /* build Processor object for each processor */ 525 for (i = 0; i < arch_ids->len; i++) { 526 Aml *dev; 527 Aml *uid = aml_int(i); 528 GArray *madt_buf = g_array_new(0, 1, 1); 529 int arch_id = arch_ids->cpus[i].arch_id; 530 531 if (opts.acpi_1_compatible && arch_id < 255) { 532 dev = aml_processor(i, 0, 0, CPU_NAME_FMT, i); 533 } else { 534 dev = aml_device(CPU_NAME_FMT, i); 535 aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007"))); 536 aml_append(dev, aml_name_decl("_UID", uid)); 537 } 538 539 method = aml_method("_STA", 0, AML_SERIALIZED); 540 aml_append(method, aml_return(aml_call1(CPU_STS_METHOD, uid))); 541 aml_append(dev, method); 542 543 /* build _MAT object */ 544 assert(adevc && adevc->madt_cpu); 545 adevc->madt_cpu(adev, i, arch_ids, madt_buf); 546 switch (madt_buf->data[0]) { 547 case ACPI_APIC_PROCESSOR: { 548 AcpiMadtProcessorApic *apic = (void *)madt_buf->data; 549 apic->flags = cpu_to_le32(1); 550 break; 551 } 552 case ACPI_APIC_LOCAL_X2APIC: { 553 AcpiMadtProcessorX2Apic *apic = (void *)madt_buf->data; 554 apic->flags = cpu_to_le32(1); 555 break; 556 } 557 default: 558 assert(0); 559 } 560 aml_append(dev, aml_name_decl("_MAT", 561 aml_buffer(madt_buf->len, (uint8_t *)madt_buf->data))); 562 g_array_free(madt_buf, true); 563 564 if (CPU(arch_ids->cpus[i].cpu) != first_cpu) { 565 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 566 aml_append(method, aml_call1(CPU_EJECT_METHOD, uid)); 567 aml_append(dev, method); 568 } 569 570 method = aml_method("_OST", 3, AML_SERIALIZED); 571 aml_append(method, 572 aml_call4(CPU_OST_METHOD, uid, aml_arg(0), 573 aml_arg(1), aml_arg(2)) 574 ); 575 aml_append(dev, method); 576 577 /* Linux guests discard SRAT info for non-present CPUs 578 * as a result _PXM is required for all CPUs which might 579 * be hot-plugged. For simplicity, add it for all CPUs. 580 */ 581 if (arch_ids->cpus[i].props.has_node_id) { 582 aml_append(dev, aml_name_decl("_PXM", 583 aml_int(arch_ids->cpus[i].props.node_id))); 584 } 585 586 aml_append(cpus_dev, dev); 587 } 588 } 589 aml_append(sb_scope, cpus_dev); 590 aml_append(table, sb_scope); 591 592 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 593 aml_append(method, aml_call0("\\_SB.CPUS." CPU_SCAN_METHOD)); 594 aml_append(table, method); 595 596 g_free(cphp_res_path); 597 } 598