[Qemu-devel] [PATCH 08/12] introduce CPU hot-plug notifier

[Igor Mammedov]

hot-added CPU id (APIC ID) will be distributed to acpi_piix4 and rtc_cmos

Signed-off-by: Igor Mammedov <address@hidden>
---
 include/sysemu/sysemu.h                 |    4 ++++
 stubs/Makefile.objs                     |    1 +
 stubs/qemu_system_cpu_hotplug_request.c |    5 +++++
 vl.c                                    |   14 ++++++++++++++
 4 files changed, 24 insertions(+), 0 deletions(-)
 create mode 100644 stubs/qemu_system_cpu_hotplug_request.c

diff --git a/include/sysemu/sysemu.h b/include/sysemu/sysemu.h
index 6578782..4b8f721 100644
--- a/include/sysemu/sysemu.h
+++ b/include/sysemu/sysemu.h
@@ -152,6 +152,10 @@ void do_pci_device_hot_remove(Monitor *mon, const QDict 
*qdict);
 /* generic hotplug */
 void drive_hot_add(Monitor *mon, const QDict *qdict);
 
+/* CPU hotplug */
+void qemu_register_cpu_add_notifier(Notifier *notifier);
+void qemu_system_cpu_hotplug_request(uint32_t id);
+
 /* pcie aer error injection */
 void pcie_aer_inject_error_print(Monitor *mon, const QObject *data);
 int do_pcie_aer_inject_error(Monitor *mon,
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 9741e16..6a492f5 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -25,3 +25,4 @@ stub-obj-y += vmstate.o
 stub-obj-$(CONFIG_WIN32) += fd-register.o
 stub-obj-y += resume_vcpu.o
 stub-obj-y += get_icc_bus.o
+stub-obj-y += qemu_system_cpu_hotplug_request.o
diff --git a/stubs/qemu_system_cpu_hotplug_request.c 
b/stubs/qemu_system_cpu_hotplug_request.c
new file mode 100644
index 0000000..ad4f394
--- /dev/null
+++ b/stubs/qemu_system_cpu_hotplug_request.c
@@ -0,0 +1,5 @@
+#include <sysemu/sysemu.h>
+
+void qemu_system_cpu_hotplug_request(uint32_t id)
+{
+}
diff --git a/vl.c b/vl.c
index aeed7f4..fd95e43 100644
--- a/vl.c
+++ b/vl.c
@@ -1723,6 +1723,20 @@ void vm_start(void)
     }
 }
 
+/* CPU hot-plug notifiers */
+static NotifierList cpu_add_notifiers =
+    NOTIFIER_LIST_INITIALIZER(cpu_add_notifiers);
+
+void qemu_register_cpu_add_notifier(Notifier *notifier)
+{
+    notifier_list_add(&cpu_add_notifiers, notifier);
+}
+
+void qemu_system_cpu_hotplug_request(uint32_t id)
+{
+    notifier_list_notify(&cpu_add_notifiers, &id);
+}
+
 /* reset/shutdown handler */
 
 typedef struct QEMUResetEntry {
-- 
1.7.1