build_srat(GArray *table_data, GArray *linker, MachineState *machine) { AcpiSystemResourceAffinityTable *srat; AcpiSratProcessorAffinity *core; AcpiSratMemoryAffinity *numamem; int i; uint64_t curnode; int srat_start, numa_start, slots; uint64_t mem_len, mem_base, next_base; MachineClass *mc = MACHINE_GET_CLASS(machine); CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine); PCMachineState *pcms = PC_MACHINE(machine); ram_addr_t hotplugabble_address_space_size = object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE, NULL); srat_start = table_data->len; srat = acpi_data_push(table_data, sizeof *srat); srat->reserved1 = cpu_to_le32(1); for (i = 0; i < apic_ids->len; i++) { int apic_id = apic_ids->cpus[i].arch_id; core = acpi_data_push(table_data, sizeof *core); core->type = ACPI_SRAT_PROCESSOR_APIC; core->length = sizeof(*core); core->local_apic_id = apic_id; curnode = pcms->node_cpu[apic_id]; core->proximity_lo = curnode; memset(core->proximity_hi, 0, 3); core->local_sapic_eid = 0; core->flags = cpu_to_le32(1); } /* the memory map is a bit tricky, it contains at least one hole * from 640k-1M and possibly another one from 3.5G-4G. */ next_base = 0; numa_start = table_data->len; numamem = acpi_data_push(table_data, sizeof *numamem); build_srat_memory(numamem, 0, 640 * 1024, 0, MEM_AFFINITY_ENABLED); next_base = 1024 * 1024; for (i = 1; i < pcms->numa_nodes + 1; ++i) { mem_base = next_base; mem_len = pcms->node_mem[i - 1]; if (i == 1) { mem_len -= 1024 * 1024; } next_base = mem_base + mem_len; /* Cut out the ACPI_PCI hole */ if (mem_base <= pcms->below_4g_mem_size && next_base > pcms->below_4g_mem_size) { mem_len -= next_base - pcms->below_4g_mem_size; if (mem_len > 0) { numamem = acpi_data_push(table_data, sizeof *numamem); build_srat_memory(numamem, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } mem_base = 1ULL << 32; mem_len = next_base - pcms->below_4g_mem_size; next_base += (1ULL << 32) - pcms->below_4g_mem_size; } numamem = acpi_data_push(table_data, sizeof *numamem); build_srat_memory(numamem, mem_base, mem_len, i - 1, MEM_AFFINITY_ENABLED); } slots = (table_data->len - numa_start) / sizeof *numamem; for (; slots < pcms->numa_nodes + 2; slots++) { numamem = acpi_data_push(table_data, sizeof *numamem); build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS); } /* * Entry is required for Windows to enable memory hotplug in OS. * Memory devices may override proximity set by this entry, * providing _PXM method if necessary. */ if (hotplugabble_address_space_size) { numamem = acpi_data_push(table_data, sizeof *numamem); build_srat_memory(numamem, pcms->hotplug_memory.base, hotplugabble_address_space_size, 0, MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED); } build_header(linker, table_data, (void *)(table_data->data + srat_start), "SRAT", table_data->len - srat_start, 1, NULL, NULL); g_free(apic_ids); }