pc: Set CPU model-id on compat_props for pc <= 2.4

Instead of relying on x86_cpudef_setup() calling
qemu_hw_version(), just make old machines set model-id explicitly
on compat_props for qemu64, qemu32, and athlon. This will allow
us to eliminate x86_cpudef_setup() later.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

hw/i386/pc_piix.c

@@ -582,6 +582,7 @@ DEFINE_I440FX_MACHINE(v1_4, "pc-i440fx-1.4", pc_compat_1_4,
 
 
 #define PC_COMPAT_1_3 \
+        PC_CPU_MODEL_IDS("1.3.0") \
         {\
             .driver   = "usb-tablet",\
             .property = "usb_version",\
@@ -613,6 +614,7 @@ DEFINE_I440FX_MACHINE(v1_3, "pc-1.3", pc_compat_1_3,
 
 
 #define PC_COMPAT_1_2 \
+        PC_CPU_MODEL_IDS("1.2.0") \
         {\
             .driver   = "nec-usb-xhci",\
             .property = "msi",\
@@ -651,6 +653,7 @@ DEFINE_I440FX_MACHINE(v1_2, "pc-1.2", pc_compat_1_2,
 
 
 #define PC_COMPAT_1_1 \
+        PC_CPU_MODEL_IDS("1.1.0") \
         {\
             .driver   = "virtio-scsi-pci",\
             .property = "hotplug",\
@@ -693,6 +696,7 @@ DEFINE_I440FX_MACHINE(v1_1, "pc-1.1", pc_compat_1_2,
 
 
 #define PC_COMPAT_1_0 \
+        PC_CPU_MODEL_IDS("1.0") \
         {\
             .driver   = TYPE_ISA_FDC,\
             .property = "check_media_rate",\
@@ -722,10 +726,14 @@ DEFINE_I440FX_MACHINE(v1_0, "pc-1.0", pc_compat_1_2,
                       pc_i440fx_1_0_machine_options);
 
 
+#define PC_COMPAT_0_15 \
+        PC_CPU_MODEL_IDS("0.15")
+
 static void pc_i440fx_0_15_machine_options(MachineClass *m)
 {
     pc_i440fx_1_0_machine_options(m);
     m->hw_version = "0.15";
+    SET_MACHINE_COMPAT(m, PC_COMPAT_0_15);
 }
 
 DEFINE_I440FX_MACHINE(v0_15, "pc-0.15", pc_compat_1_2,
@@ -733,6 +741,7 @@ DEFINE_I440FX_MACHINE(v0_15, "pc-0.15", pc_compat_1_2,
 
 
 #define PC_COMPAT_0_14 \
+        PC_CPU_MODEL_IDS("0.14") \
         {\
             .driver   = "virtio-blk-pci",\
             .property = "event_idx",\
@@ -771,6 +780,7 @@ DEFINE_I440FX_MACHINE(v0_14, "pc-0.14", pc_compat_1_2,
 
 
 #define PC_COMPAT_0_13 \
+        PC_CPU_MODEL_IDS("0.13") \
         {\
             .driver   = TYPE_PCI_DEVICE,\
             .property = "command_serr_enable",\
@@ -807,6 +817,7 @@ DEFINE_I440FX_MACHINE(v0_13, "pc-0.13", pc_compat_0_13,
 
 
 #define PC_COMPAT_0_12 \
+        PC_CPU_MODEL_IDS("0.12") \
         {\
             .driver   = "virtio-serial-pci",\
             .property = "max_ports",\
@@ -841,6 +852,7 @@ DEFINE_I440FX_MACHINE(v0_12, "pc-0.12", pc_compat_0_13,
 
 
 #define PC_COMPAT_0_11 \
+        PC_CPU_MODEL_IDS("0.11") \
         {\
             .driver   = "virtio-blk-pci",\
             .property = "vectors",\
@@ -871,6 +883,7 @@ DEFINE_I440FX_MACHINE(v0_11, "pc-0.11", pc_compat_0_13,
 
 
 #define PC_COMPAT_0_10 \
+    PC_CPU_MODEL_IDS("0.10") \
     {\
         .driver   = "virtio-blk-pci",\
         .property = "class",\

include/hw/i386/pc.h

@@ -359,8 +359,29 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 #define PC_COMPAT_2_5 \
     HW_COMPAT_2_5
 
+/* Helper for setting model-id for CPU models that changed model-id
+ * depending on QEMU versions up to QEMU 2.4.
+ */
+#define PC_CPU_MODEL_IDS(v) \
+    {\
+        .driver   = "qemu32-" TYPE_X86_CPU,\
+        .property = "model-id",\
+        .value    = "QEMU Virtual CPU version " v,\
+    },\
+    {\
+        .driver   = "qemu64-" TYPE_X86_CPU,\
+        .property = "model-id",\
+        .value    = "QEMU Virtual CPU version " v,\
+    },\
+    {\
+        .driver   = "athlon-" TYPE_X86_CPU,\
+        .property = "model-id",\
+        .value    = "QEMU Virtual CPU version " v,\
+    },
+
 #define PC_COMPAT_2_4 \
     HW_COMPAT_2_4 \
+    PC_CPU_MODEL_IDS("2.4.0") \
     {\
         .driver   = "Haswell-" TYPE_X86_CPU,\
         .property = "abm",\
@@ -431,6 +452,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
 #define PC_COMPAT_2_3 \
     HW_COMPAT_2_3 \
+    PC_CPU_MODEL_IDS("2.3.0") \
     {\
         .driver   = TYPE_X86_CPU,\
         .property = "arat",\
@@ -511,6 +533,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
 #define PC_COMPAT_2_2 \
     HW_COMPAT_2_2 \
+    PC_CPU_MODEL_IDS("2.3.0") \
     {\
         .driver = "kvm64" "-" TYPE_X86_CPU,\
         .property = "vme",\
@@ -604,6 +627,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
 
 #define PC_COMPAT_2_1 \
     HW_COMPAT_2_1 \
+    PC_CPU_MODEL_IDS("2.1.0") \
     {\
         .driver = "coreduo" "-" TYPE_X86_CPU,\
         .property = "vmx",\
@@ -616,6 +640,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
     },
 
 #define PC_COMPAT_2_0 \
+    PC_CPU_MODEL_IDS("2.0.0") \
     {\
         .driver   = "virtio-scsi-pci",\
         .property = "any_layout",\
@@ -675,6 +700,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
     },
 
 #define PC_COMPAT_1_7 \
+    PC_CPU_MODEL_IDS("1.7.0") \
     {\
         .driver   = TYPE_USB_DEVICE,\
         .property = "msos-desc",\
@@ -692,6 +718,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
     },
 
 #define PC_COMPAT_1_6 \
+    PC_CPU_MODEL_IDS("1.6.0") \
     {\
         .driver   = "e1000",\
         .property = "mitigation",\
@@ -715,6 +742,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
     },
 
 #define PC_COMPAT_1_5 \
+    PC_CPU_MODEL_IDS("1.5.0") \
     {\
         .driver   = "Conroe-" TYPE_X86_CPU,\
         .property = "model",\
@@ -758,6 +786,7 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *);
     },
 
 #define PC_COMPAT_1_4 \
+    PC_CPU_MODEL_IDS("1.4.0") \
     {\
         .driver   = "scsi-hd",\
         .property = "discard_granularity",\