Merge remote-tracking branch 'afaerber/qom-cpu' into staging

# By Igor Mammedov (21) and others
# Via Andreas Färber
* afaerber/qom-cpu: (29 commits)
  Drop redundant resume_all_vcpus() from main()
  cpus: Fix pausing TCG CPUs while in vCPU thread
  target-i386: Replace cpuid_*features fields with a feature word array
  target-i386: Break CPUID feature definition lines
  target-i386/kvm.c: Code formatting changes
  target-i386: Group together level, xlevel, xlevel2 fields
  pc: Implement QEMUMachine::hot_add_cpu hook
  QMP: Add cpu-add command
  Add hot_add_cpu hook to QEMUMachine
  target-i386: Move APIC to ICC bus
  target-i386: Attach ICC bus to CPU on its creation
  target-i386: Introduce ICC bus/device/bridge
  cpu: Move cpu_write_elfXX_note() functions to CPUState
  kvmvapic: Make dependency on sysbus.h explicit
  target-i386: Replace MSI_SPACE_SIZE with APIC_SPACE_SIZE
  target-i386: Do not allow to set apic-id once CPU is realized
  target-i386: Introduce apic-id CPU property
  target-i386: Introduce feat2prop() for CPU properties
  acpi_piix4: Add infrastructure to send CPU hot-plug GPE to guest
  cpu: Add helper cpu_exists(), to check if CPU with specified id exists
  ...

5 files changed, 91 insertions, 6 deletions

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 425bdc74a8..fb7c6f1243 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -22,12 +22,15 @@ typedef void QEMUMachineInitFunc(QEMUMachineInitArgs *args);
 
 typedef void QEMUMachineResetFunc(void);
 
+typedef void QEMUMachineHotAddCPUFunc(const int64_t id, Error **errp);
+
 typedef struct QEMUMachine {
     const char *name;
     const char *alias;
     const char *desc;
     QEMUMachineInitFunc *init;
     QEMUMachineResetFunc *reset;
+    QEMUMachineHotAddCPUFunc *hot_add_cpu;
     BlockInterfaceType block_default_type;
     int max_cpus;
     unsigned int no_serial:1,
diff --git a/include/hw/cpu/icc_bus.h b/include/hw/cpu/icc_bus.h
new file mode 100644
index 0000000000..b5500708dc
--- /dev/null
+++ b/include/hw/cpu/icc_bus.h
@@ -0,0 +1,82 @@
+/* icc_bus.h
+ * emulate x86 ICC (Interrupt Controller Communications) bus
+ *
+ * Copyright (c) 2013 Red Hat, Inc
+ *
+ * Authors:
+ *     Igor Mammedov <imammedo@redhat.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>
+ */
+#ifndef ICC_BUS_H
+#define ICC_BUS_H
+
+#include "exec/memory.h"
+#include "hw/qdev-core.h"
+
+#define TYPE_ICC_BUS "icc-bus"
+
+#ifndef CONFIG_USER_ONLY
+
+/**
+ * ICCBus:
+ *
+ * ICC bus
+ */
+typedef struct ICCBus {
+    /*< private >*/
+    BusState parent_obj;
+    /*< public >*/
+
+    MemoryRegion *apic_address_space;
+} ICCBus;
+
+#define ICC_BUS(obj) OBJECT_CHECK(ICCBus, (obj), TYPE_ICC_BUS)
+
+/**
+ * ICCDevice:
+ *
+ * ICC device
+ */
+typedef struct ICCDevice {
+    /*< private >*/
+    DeviceState qdev;
+    /*< public >*/
+} ICCDevice;
+
+/**
+ * ICCDeviceClass:
+ * @init: Initialization callback for derived classes.
+ *
+ * ICC device class
+ */
+typedef struct ICCDeviceClass {
+    /*< private >*/
+    DeviceClass parent_class;
+    /*< public >*/
+
+    int (*init)(ICCDevice *dev); /* TODO replace with QOM realize */
+} ICCDeviceClass;
+
+#define TYPE_ICC_DEVICE "icc-device"
+#define ICC_DEVICE(obj) OBJECT_CHECK(ICCDevice, (obj), TYPE_ICC_DEVICE)
+#define ICC_DEVICE_CLASS(klass) \
+     OBJECT_CLASS_CHECK(ICCDeviceClass, (klass), TYPE_ICC_DEVICE)
+#define ICC_DEVICE_GET_CLASS(obj) \
+     OBJECT_GET_CLASS(ICCDeviceClass, (obj), TYPE_ICC_DEVICE)
+
+#define TYPE_ICC_BRIDGE "icc-bridge"
+
+#endif /* CONFIG_USER_ONLY */
+#endif
diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
index 578241f861..1b0a7fbfad 100644
--- a/include/hw/i386/apic_internal.h
+++ b/include/hw/i386/apic_internal.h
@@ -21,7 +21,7 @@
 #define QEMU_APIC_INTERNAL_H
 
 #include "exec/memory.h"
-#include "hw/sysbus.h"
+#include "hw/cpu/icc_bus.h"
 #include "qemu/timer.h"
 
 /* APIC Local Vector Table */
@@ -66,8 +66,6 @@
 
 #define MAX_APICS 255
 
-#define MSI_SPACE_SIZE                  0x100000
-
 typedef struct APICCommonState APICCommonState;
 
 #define TYPE_APIC_COMMON "apic-common"
@@ -80,7 +78,7 @@ typedef struct APICCommonState APICCommonState;
 
 typedef struct APICCommonClass
 {
-    SysBusDeviceClass parent_class;
+    ICCDeviceClass parent_class;
 
     void (*init)(APICCommonState *s);
     void (*set_base)(APICCommonState *s, uint64_t val);
@@ -94,7 +92,7 @@ typedef struct APICCommonClass
 } APICCommonClass;
 
 struct APICCommonState {
-    SysBusDevice busdev;
+    ICCDevice busdev;
 
     MemoryRegion io_memory;
     X86CPU *cpu;
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index dd6bc249bf..41869e56e9 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -78,7 +78,8 @@ extern int fd_bootchk;
 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);
+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,
diff --git a/include/hw/timer/mc146818rtc.h b/include/hw/timer/mc146818rtc.h
index 425bd179a4..753dda6ae7 100644
--- a/include/hw/timer/mc146818rtc.h
+++ b/include/hw/timer/mc146818rtc.h
@@ -8,6 +8,7 @@
 
 ISADevice *rtc_init(ISABus *bus, int base_year, qemu_irq intercept_irq);
 void rtc_set_memory(ISADevice *dev, int addr, int val);
+int rtc_get_memory(ISADevice *dev, int addr);
 void rtc_set_date(ISADevice *dev, const struct tm *tm);
 
 #endif /* !MC146818RTC_H */