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[Qemu-devel] [PATCH 5/5] target-i386: implement machine->hot_add_cpu hoo
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 5/5] target-i386: implement machine->hot_add_cpu hook |
Date: |
Tue, 30 Apr 2013 15:41:28 +0200 |
Signed-off-by: Igor Mammedov <address@hidden>
---
v2:
* override .hot_add_cpu statically starting with 1.5 machine
---
hw/i386/pc.c | 23 +++++++++++++++++++++++
hw/i386/pc_piix.c | 1 +
hw/i386/pc_q35.c | 1 +
include/hw/i386/pc.h | 1 +
4 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/hw/i386/pc.c b/hw/i386/pc.c
index 0b75016..7453260 100644
--- a/hw/i386/pc.c
+++ b/hw/i386/pc.c
@@ -54,6 +54,7 @@
#include "qemu/config-file.h"
#include "hw/acpi/acpi.h"
#include "hw/cpu/icc_bus.h"
+#include "hw/boards.h"
/* debug PC/ISA interrupts */
//#define DEBUG_IRQ
@@ -919,6 +920,28 @@ static X86CPU *pc_new_cpu(const char *cpu_model, int64_t
apic_id,
return cpu;
}
+void pc_hot_add_cpu(const int64_t id, Error **errp)
+{
+ DeviceState *icc_bridge;
+ int64_t apic_id = x86_cpu_apic_id_from_index(id);
+
+ if (cpu_exists(apic_id)) {
+ error_setg(errp, "Unable to add CPU: %" PRIi64
+ ", it already exists", id);
+ return;
+ }
+
+ if (id >= max_cpus) {
+ error_setg(errp, "Unable to add CPU: %" PRIi64
+ ", max allowed: %d", id, max_cpus - 1);
+ return;
+ }
+
+ icc_bridge = DEVICE(object_resolve_path_type("icc-bridge",
+ TYPE_ICC_BRIDGE, NULL));
+ pc_new_cpu(current_machine->cpu_model, apic_id, icc_bridge, errp);
+}
+
void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge)
{
int i;
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 465c48b..455faa1 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -320,6 +320,7 @@ static QEMUMachine pc_i440fx_machine_v1_5 = {
.alias = "pc",
.desc = "Standard PC (i440FX + PIIX, 1996)",
.init = pc_init_pci,
+ .hot_add_cpu = pc_hot_add_cpu,
.max_cpus = 255,
.cpu_model = DEFAULT_X86CPU_MODEL,
.is_default = 1,
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index ab864db..c706678 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -213,6 +213,7 @@ static QEMUMachine pc_q35_machine_v1_5 = {
.alias = "q35",
.desc = "Standard PC (Q35 + ICH9, 2009)",
.init = pc_q35_init,
+ .hot_add_cpu = pc_hot_add_cpu,
.max_cpus = 255,
.cpu_model = DEFAULT_X86CPU_MODEL,
DEFAULT_MACHINE_OPTIONS,
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 8a6e76c..0bbb7b4 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -79,6 +79,7 @@ void pc_register_ferr_irq(qemu_irq irq);
void pc_acpi_smi_interrupt(void *opaque, int irq, int level);
void pc_cpus_init(const char *cpu_model, DeviceState *icc_bridge);
+void pc_hot_add_cpu(const int64_t id, Error **errp);
void pc_acpi_init(const char *default_dsdt);
void *pc_memory_init(MemoryRegion *system_memory,
const char *kernel_filename,
--
1.7.1
- Re: [Qemu-devel] [PATCH 2/5] QMP: add cpu-add command, (continued)
[Qemu-devel] [PATCH 5/5] target-i386: implement machine->hot_add_cpu hook,
Igor Mammedov <=
[Qemu-devel] [PATCH 4/5] target-i386: get default cpu_model from QEMUMachine, Igor Mammedov, 2013/04/30