From 93b2a8cb0bb6195ab6001fe05d4896a7aaaed639 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Wed, 10 May 2017 13:29:47 +0200 Subject: pc: add node-id property to CPU it will allow switching from cpu_index to property based numa mapping in follow up patches. PS: patch changes default value of CPUState::numa_node from 0 to CPU_UNSET_NUMA_NODE_ID. The only place for x86 that would affected is monitor's 'infor numa' command which uses that field. However legacy 0 value is still preserved by pc_cpu_pre_plug() in this patch if user/numa.c hasn't set it explicitly, so there is no change in behavior. Signed-off-by: Igor Mammedov Message-Id: <1494415802-227633-4-git-send-email-imammedo@redhat.com> Reviewed-by: Eduardo Habkost Signed-off-by: Eduardo Habkost --- hw/i386/pc.c | 17 +++++++++++++++++ target/i386/cpu.c | 1 + 2 files changed, 18 insertions(+) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 01693d54ca..455300f776 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1893,6 +1893,7 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { int idx; + int node_id; CPUState *cs; CPUArchId *cpu_slot; X86CPUTopoInfo topo; @@ -1982,6 +1983,22 @@ static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev, cs = CPU(cpu); cs->cpu_index = idx; + + node_id = numa_get_node_for_cpu(cs->cpu_index); + if (node_id == nb_numa_nodes) { + /* by default CPUState::numa_node was 0 if it's not set via CLI + * keep it this way for now but in future we probably should + * refuse to start up with incomplete numa mapping */ + node_id = 0; + } + if (cs->numa_node == CPU_UNSET_NUMA_NODE_ID) { + cs->numa_node = node_id; + } else if (cs->numa_node != node_id) { + error_setg(errp, "node-id %d must match numa node specified" + "with -numa option for cpu-index %d", + cs->numa_node, cs->cpu_index); + return; + } } static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev, diff --git a/target/i386/cpu.c b/target/i386/cpu.c index e3182b296f..5e768404a1 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -3986,6 +3986,7 @@ static Property x86_cpu_properties[] = { DEFINE_PROP_INT32("core-id", X86CPU, core_id, -1), DEFINE_PROP_INT32("socket-id", X86CPU, socket_id, -1), #endif + DEFINE_PROP_INT32("node-id", CPUState, numa_node, CPU_UNSET_NUMA_NODE_ID), DEFINE_PROP_BOOL("pmu", X86CPU, enable_pmu, false), { .name = "hv-spinlocks", .info = &qdev_prop_spinlocks }, DEFINE_PROP_BOOL("hv-relaxed", X86CPU, hyperv_relaxed_timing, false), -- cgit v1.2.3