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pc: Set APIC ID based on socket/core/thread ids if it's not been set yet

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CPU added with device_add help won't have APIC ID set,
so set it according to socket/core/thread ids provided
with device_add command.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2016-07-14 18:54:30 +02:00 committed by Eduardo Habkost
parent 67e55caa6d
commit e8f7b83e88
1 changed files with 41 additions and 3 deletions
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44
hw/i386/pc.c
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@ -1844,14 +1844,52 @@ 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);
CPUArchId *cpu_slot = pc_find_cpu_slot(pcms, CPU(dev), &idx);
/* 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) {
error_setg(errp, "Invalid CPU index with APIC ID (%" PRIu32
"), valid range 0:%d", cpu->apic_id,
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;
}