system/qemu
system/qemu
1
0
Fork 0
mirror of https://gitlab.com/qemu-project/qemu synced 2024-11-05 20:35:44 +00:00
Code Issues Projects Releases Packages Wiki Activity

numa: make sure that all cpus have has_node_id set if numa is enabled

Browse source 
It fixes/add missing _PXM object for non mapped CPU (x86)
and missing fdt node (virt-arm).

It ensures that possible_cpus contains complete mapping if
numa is enabled by the time machine_init() is executed.

As result non completely mapped CPUs:
 1) appear in ACPI/fdt blobs
 2) QMP query-hotpluggable-cpus command shows bound nodes for such CPUs
 3) allows to drop checks for has_node_id in numa only code,
   reducing number of invariants incomplete mapping could produce
 4) moves fixup/implicit node init from runtime numa_cpu_pre_plug()
   (when CPU object is created) to machine_numa_finish_init() which
   helps to fix [1, 2] and make possible_cpus complete source
   of numa mapping available even before CPUs are created.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1496161442-96665-4-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
This commit is contained in:
Igor Mammedov 2017-05-30 18:23:58 +02:00 committed by Eduardo Habkost
parent 60bed6a30a
commit d41f3e750d
5 changed files with 18 additions and 25 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
hw/arm/virt-acpi-build.c
View file

@ -496,12 +496,10 @@ build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
srat->reserved1 = cpu_to_le32(1);
for (i = 0; i < cpu_list->len; ++i) {
int node_id = cpu_list->cpus[i].props.has_node_id ?
cpu_list->cpus[i].props.node_id : 0;
core = acpi_data_push(table_data, sizeof(*core));
core->type = ACPI_SRAT_PROCESSOR_GICC;
core->length = sizeof(*core);
core->proximity = cpu_to_le32(node_id);
core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
core->acpi_processor_uid = cpu_to_le32(i);
core->flags = cpu_to_le32(1);
}

16
hw/core/machine.c
View file

@ -721,19 +721,23 @@ static void machine_numa_finish_init(MachineState *machine)
const CPUArchId *cpu_slot = &possible_cpus->cpus[i];
if (!cpu_slot->props.has_node_id) {
if (default_mapping) {
/* fetch default mapping from board and enable it */
CpuInstanceProperties props = cpu_slot->props;
props.has_node_id = true;
machine_set_cpu_numa_node(machine, &props, &error_fatal);
} else {
/* fetch default mapping from board and enable it */
CpuInstanceProperties props = cpu_slot->props;
if (!default_mapping) {
/* record slots with not set mapping,
* TODO: make it hard error in future */
char *cpu_str = cpu_slot_to_string(cpu_slot);
g_string_append_printf(s, "%sCPU %d [%s]",
s->len ? ", " : "", i, cpu_str);
g_free(cpu_str);
/* non mapped cpus used to fallback to node 0 */
props.node_id = 0;
}
props.has_node_id = true;
machine_set_cpu_numa_node(machine, &props, &error_fatal);
}
}
if (s->len && !qtest_enabled()) {

3
hw/i386/acpi-build.c
View file

@ -2335,8 +2335,7 @@ build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
srat->reserved1 = cpu_to_le32(1);
for (i = 0; i < apic_ids->len; i++) {
int node_id = apic_ids->cpus[i].props.has_node_id ?
apic_ids->cpus[i].props.node_id : 0;
int node_id = apic_ids->cpus[i].props.node_id;
uint32_t apic_id = apic_ids->cpus[i].arch_id;
if (apic_id < 255) {

4
hw/i386/pc.c
View file

@ -788,9 +788,7 @@ static FWCfgState *bochs_bios_init(AddressSpace *as, PCMachineState *pcms)
for (i = 0; i < cpus->len; i++) {
unsigned int apic_id = cpus->cpus[i].arch_id;
assert(apic_id < pcms->apic_id_limit);
if (cpus->cpus[i].props.has_node_id) {
numa_fw_cfg[apic_id + 1] = cpu_to_le64(cpus->cpus[i].props.node_id);
}
numa_fw_cfg[apic_id + 1] = cpu_to_le64(cpus->cpus[i].props.node_id);
}
for (i = 0; i < nb_numa_nodes; i++) {
numa_fw_cfg[pcms->apic_id_limit + 1 + i] =

16
numa.c
View file

@ -509,22 +509,16 @@ void parse_numa_opts(MachineState *ms)
void numa_cpu_pre_plug(const CPUArchId *slot, DeviceState *dev, Error **errp)
{
int mapped_node_id; /* set by -numa option */
int node_id = object_property_get_int(OBJECT(dev), "node-id", &error_abort);
/* by default CPUState::numa_node was 0 if it wasn't set explicitly
* TODO: make it error when incomplete numa mapping support is removed
*/
mapped_node_id = slot->props.node_id;
if (!slot->props.has_node_id) {
mapped_node_id = 0;
}
if (node_id == CPU_UNSET_NUMA_NODE_ID) {
/* due to bug in libvirt, it doesn't pass node-id from props on
* device_add as expected, so we have to fix it up here */
object_property_set_int(OBJECT(dev), mapped_node_id, "node-id", errp);
} else if (node_id != mapped_node_id) {
if (slot->props.has_node_id) {
object_property_set_int(OBJECT(dev), slot->props.node_id,
"node-id", errp);
}
} else if (node_id != slot->props.node_id) {
error_setg(errp, "node-id=%d must match numa node specified "
"with -numa option", node_id);
}