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authorIgor Mammedov <imammedo@redhat.com>2016-02-26 14:59:23 +0100
committerMichael S. Tsirkin <mst@redhat.com>2016-03-11 16:59:12 +0200
commit5803fce3891094618ba018ca1b7ba09ce5de9437 (patch)
treee4226802ff6b0c32692b3b43687d0b51aaa31726 /hw/i386
parent3d3ebcad6a0ff7ceb6dd0f2f678c326968399b18 (diff)
downloadqemu-5803fce3891094618ba018ca1b7ba09ce5de9437.tar.gz
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>
Diffstat (limited to 'hw/i386')
-rw-r--r--hw/i386/acpi-build.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index be6d0a91e4..a7aeb2fe0c 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -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