[v21,7/8] pvpanic: create pvpanic by default for machine 1.5

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 89b4cb4..d71a1c6 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -55,6 +55,8 @@  static const int ide_iobase[MAX_IDE_BUS] = { 0x1f0, 0x170 };
 static const int ide_iobase2[MAX_IDE_BUS] = { 0x3f6, 0x376 };
 static const int ide_irq[MAX_IDE_BUS] = { 14, 15 };
 
+static bool has_pvpanic = true;
+
 /* PC hardware initialisation */
 static void pc_init1(MemoryRegion *system_memory,
                      MemoryRegion *system_io,
@@ -218,6 +220,10 @@  static void pc_init1(MemoryRegion *system_memory,
     if (pci_enabled) {
         pc_pci_device_init(pci_bus);
     }
+
+    if (has_pvpanic) {
+        pvpanic_init(isa_bus);
+    }
 }
 
 static void pc_init_pci(QEMUMachineInitArgs *args)
@@ -238,6 +244,7 @@  static void pc_init_pci(QEMUMachineInitArgs *args)
 static void pc_init_pci_1_4(QEMUMachineInitArgs *args)
 {
     pc_sysfw_flash_vs_rom_bug_compatible = true;
+    has_pvpanic = false;
     pc_init_pci(args);
 }
 
@@ -245,6 +252,7 @@  static void pc_init_pci_1_3(QEMUMachineInitArgs *args)
 {
     enable_compat_apic_id_mode();
     pc_sysfw_flash_vs_rom_bug_compatible = true;
+    has_pvpanic = false;
     pc_init_pci(args);
 }
 
@@ -254,6 +262,7 @@  static void pc_init_pci_1_2(QEMUMachineInitArgs *args)
     disable_kvm_pv_eoi();
     enable_compat_apic_id_mode();
     pc_sysfw_flash_vs_rom_bug_compatible = true;
+    has_pvpanic = false;
     pc_init_pci(args);
 }
 
@@ -262,6 +271,7 @@  static void pc_init_pci_1_0(QEMUMachineInitArgs *args)
 {
     disable_kvm_pv_eoi();
     enable_compat_apic_id_mode();
+    has_pvpanic = false;
     pc_init_pci(args);
 }
 
@@ -274,6 +284,7 @@  static void pc_init_pci_no_kvmclock(QEMUMachineInitArgs *args)
     const char *kernel_cmdline = args->kernel_cmdline;
     const char *initrd_filename = args->initrd_filename;
     const char *boot_device = args->boot_device;
+    has_pvpanic = false;
     disable_kvm_pv_eoi();
     enable_compat_apic_id_mode();
     pc_init1(get_system_memory(),
@@ -291,6 +302,7 @@  static void pc_init_isa(QEMUMachineInitArgs *args)
     const char *kernel_cmdline = args->kernel_cmdline;
     const char *initrd_filename = args->initrd_filename;
     const char *boot_device = args->boot_device;
+    has_pvpanic = false;
     if (cpu_model == NULL)
         cpu_model = "486";
     disable_kvm_pv_eoi();
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index f160893..6a03ba4 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -45,6 +45,8 @@ 
 /* ICH9 AHCI has 6 ports */
 #define MAX_SATA_PORTS     6
 
+static bool has_pvpanic = true;
+
 /* PC hardware initialisation */
 static void pc_q35_init(QEMUMachineInitArgs *args)
 {
@@ -194,11 +196,16 @@  static void pc_q35_init(QEMUMachineInitArgs *args)
     if (pci_enabled) {
         pc_pci_device_init(host_bus);
     }
+
+    if (has_pvpanic) {
+        pvpanic_init(isa_bus);
+    }
 }
 
 static void pc_q35_init_1_4(QEMUMachineInitArgs *args)
 {
     pc_sysfw_flash_vs_rom_bug_compatible = true;
+    has_pvpanic = false;
     pc_q35_init(args);
 }
 
diff --git a/hw/misc/pvpanic.c b/hw/misc/pvpanic.c
index a80fae5..31e1b1d 100644
--- a/hw/misc/pvpanic.c
+++ b/hw/misc/pvpanic.c
@@ -19,6 +19,7 @@ 
 #include "qemu/log.h"
 
 #include "hw/nvram/fw_cfg.h"
+#include "hw/i386/pc.h"
 
 /* The bit of supported pv event */
 #define PVPANIC_F_PANICKED      0
@@ -107,6 +108,12 @@  static int pvpanic_isa_initfn(ISADevice *dev)
     return 0;
 }
 
+int pvpanic_init(ISABus *bus)
+{
+    isa_create_simple(bus, TYPE_ISA_PVPANIC_DEVICE);
+    return 0;
+}
+
 static Property pvpanic_isa_properties[] = {
     DEFINE_PROP_UINT16("ioport", PVPanicState, ioport, 0x505),
     DEFINE_PROP_END_OF_LIST(),
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 14b504c..dd6bc24 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -171,6 +171,9 @@  static inline bool isa_ne2000_init(ISABus *bus, int base, int irq, NICInfo *nd)
 extern bool pc_sysfw_flash_vs_rom_bug_compatible;
 void pc_system_firmware_init(MemoryRegion *rom_memory);
 
+/* pvpanic.c */
+int pvpanic_init(ISABus *bus);
+
 /* e820 types */
 #define E820_RAM        1
 #define E820_RESERVED   2