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[Qemu-devel] [PATCH 27/33] pc: numa: replace node_cpu indexing by apic_i
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 27/33] pc: numa: replace node_cpu indexing by apic_id with possible_cpus index |
Date: |
Tue, 17 May 2016 16:43:19 +0200 |
that removes dependency on apic_id_limit, reducing size of
node_cpu to a number of maxcpus and allowing usage of
32bit APIC IDs without allocating a huge array.
Signed-off-by: Igor Mammedov <address@hidden>
---
hw/i386/acpi-build.c | 2 +-
hw/i386/pc.c | 28 ++++++++++++----------------
2 files changed, 13 insertions(+), 17 deletions(-)
diff --git a/hw/i386/acpi-build.c b/hw/i386/acpi-build.c
index c62c020..9b9ef62 100644
--- a/hw/i386/acpi-build.c
+++ b/hw/i386/acpi-build.c
@@ -2342,7 +2342,7 @@ build_srat(GArray *table_data, GArray *linker,
MachineState *machine)
core->type = ACPI_SRAT_PROCESSOR_APIC;
core->length = sizeof(*core);
core->local_apic_id = apic_id;
- curnode = pcms->node_cpu[apic_id];
+ curnode = pcms->node_cpu[i];
core->proximity_lo = curnode;
memset(core->proximity_hi, 0, 3);
core->local_sapic_eid = 0;
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 1cad132..2dba916 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -1104,7 +1104,7 @@ void pc_hot_add_cpu(const int64_t id, Error **errp)
void pc_cpus_init(PCMachineState *pcms)
{
- int i;
+ int i, j;
X86CPU *cpu = NULL;
MachineState *machine = MACHINE(pcms);
@@ -1133,9 +1133,19 @@ void pc_cpus_init(PCMachineState *pcms)
pcms->possible_cpus = g_malloc0(sizeof(CPUArchIdList) +
sizeof(CPUArchId) * max_cpus);
+ pcms->node_cpu = g_malloc0(max_cpus * sizeof *pcms->node_cpu);
+
for (i = 0; i < max_cpus; i++) {
pcms->possible_cpus->cpus[i].arch_id = x86_cpu_apic_id_from_index(i);
pcms->possible_cpus->len++;
+
+ for (j = 0; j < nb_numa_nodes; j++) {
+ if (test_bit(i, numa_info[j].node_cpu)) {
+ pcms->node_cpu[i] = j;
+ break;
+ }
+ }
+
if (i < smp_cpus) {
cpu = pc_new_cpu(machine->cpu_model, x86_cpu_apic_id_from_index(i),
&error_fatal);
@@ -1185,7 +1195,7 @@ void pc_machine_done(Notifier *notifier, void *data)
void pc_guest_info_init(PCMachineState *pcms)
{
- int i, j;
+ int i;
pcms->apic_xrupt_override = kvm_allows_irq0_override();
pcms->numa_nodes = nb_numa_nodes;
@@ -1195,20 +1205,6 @@ void pc_guest_info_init(PCMachineState *pcms)
pcms->node_mem[i] = numa_info[i].node_mem;
}
- pcms->node_cpu = g_malloc0(pcms->apic_id_limit *
- sizeof *pcms->node_cpu);
-
- for (i = 0; i < max_cpus; i++) {
- unsigned int apic_id = x86_cpu_apic_id_from_index(i);
- assert(apic_id < pcms->apic_id_limit);
- for (j = 0; j < nb_numa_nodes; j++) {
- if (test_bit(i, numa_info[j].node_cpu)) {
- pcms->node_cpu[apic_id] = j;
- break;
- }
- }
- }
-
pcms->machine_done.notify = pc_machine_done;
qemu_add_machine_init_done_notifier(&pcms->machine_done);
}
--
1.8.3.1
- Re: [Qemu-devel] [PATCH 20/33] pc: q35: initialize new CPU hotplug hw, (continued)
[Qemu-devel] [PATCH 31/33] tests: acpi: update expected tables with new cpu-hotplug methods enabled by default, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 19/33] pc: piix4/ich9: add 'cpu-hotplug-legacy' property, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 23/33] acpi: add CPU devices AML to DSDT, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 32/33] tests: acpi: add CPU hotplug testcase, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 29/33] acpi: cpuhp: provide cpu._PXM method if running in numa mode, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 33/33] tests: acpi: add DSDT/MADT expected tables for cpu-hotplug case, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 27/33] pc: numa: replace node_cpu indexing by apic_id with possible_cpus index,
Igor Mammedov <=
[Qemu-devel] [PATCH 28/33] pc: set X86CPU.node property if QEMU starts with numa enabled, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 30/33] acpi: cpuhp: add cpu._OST handling, Igor Mammedov, 2016/05/17
[Qemu-devel] [PATCH 26/33] target-i386: add X86CPU.node property, Igor Mammedov, 2016/05/17