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pc: acpi: SRAT: create only valid processor lapic entries 

When APIC IDs are sparse*, in addition to valid LAPIC
entries the SRAT is also filled invalid ones for non
possible APIC IDs.
Fix it by asking machine for all possible APIC IDs
instead of wrongly assuming that all APIC IDs in
range 0..apic_id_limit are possible.

* sparse lapic topology CLI:
     -smp x,sockets=2,cores=3,maxcpus=6
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Igor Mammedov 2016-02-26 14:59:23 +01:00 committed by Michael S. Tsirkin
parent 3d3ebcad6a
commit 5803fce389
1 changed files with 8 additions and 3 deletions
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11
hw/i386/acpi-build.c
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@ -2453,6 +2453,8 @@ build_srat(GArray *table_data, GArray *linker, MachineState *machine)
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,
@ -2463,12 +2465,14 @@ build_srat(GArray *table_data, GArray *linker, MachineState *machine)
srat = acpi_data_push(table_data, sizeof *srat);
srat->reserved1 = cpu_to_le32(1);
for (i = 0; i < pcms->apic_id_limit; ++i) {
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;
core->length = sizeof(*core);
core->local_apic_id = i;
curnode = pcms->node_cpu[i];
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;
@ -2533,6 +2537,7 @@ build_srat(GArray *table_data, GArray *linker, MachineState *machine)
(void *)(table_data->data + srat_start),
"SRAT",
table_data->len - srat_start, 1, NULL, NULL);
g_free(apic_ids);
}
static void