pc: Define MACHINE_OPTIONS macros consistently for all machines

Define a MACHINE_OPTIONS macro for each PC machine, and move every field
inside the QEMUMachine structs to the macros, except for name, init, and
compat_props.

This also ensures that all MACHINE_OPTIONS inherit the fields from the
next version, so their definitions carry only the changes that exist
between one version and the next one.

Comments about specific cases:

pc-*-2.1:

  Existing PC_*_2_1_MACHINE_OPTIONS macros were defined as:
      PC_*_MACHINE_OPTIONS,
      .default_machine_opts = "firmware=bios-256k.bin"

  PC_*_2_2_MACHINE_OPTIONS is:
      PC_*_2_3_MACHINE_OPTIONS
  which is expanded to:
      PC_*_MACHINE_OPTIONS,
      .default_machine_opts = "firmware=bios-256k.bin",
      .default_display = "std"

  The only difference between 2_1 and 2_2 is .default_display, that's why
  we didn't reuse PC_*_2_2_MACHINE_OPTIONS. The good news is that having
  multiple initializers for a field is allowed by C99, and the last
  initializer overrides the previous ones.

  So we can reuse the 2_2 macro in 2_1 and define PC_*_2_1_MACHINE_OPTIONS
  as:
      PC_*_2_2_MACHINE_OPTIONS,
      .default_display = NULL

pc-*-1.7:

  PC_*_1_7_MACHINE_OPTIONS was defined as:
      PC_*_MACHINE_OPTIONS

  PC_*_2_0_MACHINE_OPTIONS is defined as:
      PC_*_2_1_MACHINE_OPTIONS
  which is expanded to:
      PC_*_2_2_MACHINE_OPTIONS,
      .default_display = NULL
  which is expanded to:
      PC_*_2_3_MACHINE_OPTIONS,
      .default_display = NULL
  which is expanded to:
      PC_*_MACHINE_OPTIONS,
      .default_machine_opts = "firmware=bios-256k.bin",
      .default_display = "std",
      .default_display = NULL  /* overrides the previous line */

  So, the only difference between PC_*_1_7_MACHINE_OPTIONS and
  PC_*_2_0_MACHINE_OPTIONS is .default_machine_opts (as .default_display
  is not explicitly set by PC_*_MACHINE_OPTIONS so it is NULL).

  So we can keep the macro reuse pattern and define
  PC_*_2_0_MACHINE_OPTIONS as:
      PC_*_2_0_MACHINE_OPTIONS,
      .default_machine_opts = NULL

pc-*-2.4 (alias and is_default fields):

  Set alias and is_default fields inside the 2.4 MACHINE_OPTIONS macro,
  and clear it in the 2.3 macro (that reuses the 2.4 macro).

hw_machine:

  As all the machines older than v1.0 set hw_version explicitly, we can
  safely move the field to the MACHINE_OPTIONS macros without affecting
  the other versions that reuse them.

init function:

  Some machines had the init function set inside the MACHINE_OPTIONS
  macro. Move it to the QEMUMachine declaration, to keep it consistent
  with the other machines.

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

2 files changed, 110 insertions, 52 deletions

diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 6734c62..0bbe979 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -526,18 +526,21 @@ static void pc_xen_hvm_init(MachineState *machine)
 #define PC_I440FX_2_4_MACHINE_OPTIONS                           \
     PC_I440FX_MACHINE_OPTIONS,                                  \
     .default_machine_opts = "firmware=bios-256k.bin",           \
-    .default_display = "std"
+    .default_display = "std",                                   \
+    .alias = "pc",                                              \
+    .is_default = 1
 
 
 static QEMUMachine pc_i440fx_machine_v2_4 = {
     PC_I440FX_2_4_MACHINE_OPTIONS,
     .name = "pc-i440fx-2.4",
-    .alias = "pc",
     .init = pc_init_pci,
-    .is_default = 1,
 };
 
-#define PC_I440FX_2_3_MACHINE_OPTIONS PC_I440FX_2_4_MACHINE_OPTIONS
+#define PC_I440FX_2_3_MACHINE_OPTIONS \
+    PC_I440FX_2_4_MACHINE_OPTIONS, \
+    .alias = NULL, \
+    .is_default = 0
 
 static QEMUMachine pc_i440fx_machine_v2_3 = {
     PC_I440FX_2_3_MACHINE_OPTIONS,
@@ -549,7 +552,8 @@ static QEMUMachine pc_i440fx_machine_v2_3 = {
     },
 };
 
-#define PC_I440FX_2_2_MACHINE_OPTIONS PC_I440FX_2_3_MACHINE_OPTIONS
+#define PC_I440FX_2_2_MACHINE_OPTIONS \
+    PC_I440FX_2_3_MACHINE_OPTIONS
 
 static QEMUMachine pc_i440fx_machine_v2_2 = {
     PC_I440FX_2_2_MACHINE_OPTIONS,
@@ -561,9 +565,9 @@ static QEMUMachine pc_i440fx_machine_v2_2 = {
     },
 };
 
-#define PC_I440FX_2_1_MACHINE_OPTIONS                           \
-    PC_I440FX_MACHINE_OPTIONS,                                  \
-    .default_machine_opts = "firmware=bios-256k.bin"
+#define PC_I440FX_2_1_MACHINE_OPTIONS \
+    PC_I440FX_2_2_MACHINE_OPTIONS, \
+    .default_display = NULL
 
 static QEMUMachine pc_i440fx_machine_v2_1 = {
     PC_I440FX_2_1_MACHINE_OPTIONS,
@@ -575,7 +579,8 @@ static QEMUMachine pc_i440fx_machine_v2_1 = {
     },
 };
 
-#define PC_I440FX_2_0_MACHINE_OPTIONS PC_I440FX_2_1_MACHINE_OPTIONS
+#define PC_I440FX_2_0_MACHINE_OPTIONS \
+    PC_I440FX_2_1_MACHINE_OPTIONS
 
 static QEMUMachine pc_i440fx_machine_v2_0 = {
     PC_I440FX_2_0_MACHINE_OPTIONS,
@@ -587,7 +592,9 @@ static QEMUMachine pc_i440fx_machine_v2_0 = {
     },
 };
 
-#define PC_I440FX_1_7_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS
+#define PC_I440FX_1_7_MACHINE_OPTIONS \
+    PC_I440FX_2_0_MACHINE_OPTIONS, \
+    .default_machine_opts = NULL
 
 static QEMUMachine pc_i440fx_machine_v1_7 = {
     PC_I440FX_1_7_MACHINE_OPTIONS,
@@ -599,7 +606,8 @@ static QEMUMachine pc_i440fx_machine_v1_7 = {
     },
 };
 
-#define PC_I440FX_1_6_MACHINE_OPTIONS PC_I440FX_MACHINE_OPTIONS
+#define PC_I440FX_1_6_MACHINE_OPTIONS \
+    PC_I440FX_1_7_MACHINE_OPTIONS
 
 static QEMUMachine pc_i440fx_machine_v1_6 = {
     PC_I440FX_1_6_MACHINE_OPTIONS,
@@ -611,8 +619,11 @@ static QEMUMachine pc_i440fx_machine_v1_6 = {
     },
 };
 
+#define PC_I440FX_1_5_MACHINE_OPTIONS \
+    PC_I440FX_1_6_MACHINE_OPTIONS
+
 static QEMUMachine pc_i440fx_machine_v1_5 = {
-    PC_I440FX_1_6_MACHINE_OPTIONS,
+    PC_I440FX_1_5_MACHINE_OPTIONS,
     .name = "pc-i440fx-1.5",
     .init = pc_init_pci_1_5,
     .compat_props = (GlobalProperty[]) {
@@ -622,7 +633,7 @@ static QEMUMachine pc_i440fx_machine_v1_5 = {
 };
 
 #define PC_I440FX_1_4_MACHINE_OPTIONS \
-    PC_I440FX_1_6_MACHINE_OPTIONS, \
+    PC_I440FX_1_5_MACHINE_OPTIONS, \
     .hot_add_cpu = NULL
 
 static QEMUMachine pc_i440fx_machine_v1_4 = {
@@ -655,8 +666,11 @@ static QEMUMachine pc_i440fx_machine_v1_4 = {
             .value    = "off",\
         },
 
+#define PC_I440FX_1_3_MACHINE_OPTIONS \
+    PC_I440FX_1_4_MACHINE_OPTIONS
+
 static QEMUMachine pc_machine_v1_3 = {
-    PC_I440FX_1_4_MACHINE_OPTIONS,
+    PC_I440FX_1_3_MACHINE_OPTIONS,
     .name = "pc-1.3",
     .init = pc_init_pci_1_3,
     .compat_props = (GlobalProperty[]) {
@@ -694,12 +708,12 @@ static QEMUMachine pc_machine_v1_3 = {
         },
 
 #define PC_I440FX_1_2_MACHINE_OPTIONS \
-    PC_I440FX_1_4_MACHINE_OPTIONS, \
-    .init = pc_init_pci_1_2
+    PC_I440FX_1_3_MACHINE_OPTIONS
 
 static QEMUMachine pc_machine_v1_2 = {
     PC_I440FX_1_2_MACHINE_OPTIONS,
     .name = "pc-1.2",
+    .init = pc_init_pci_1_2,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_1_2
         { /* end of list */ }
@@ -738,9 +752,13 @@ static QEMUMachine pc_machine_v1_2 = {
             .value    = "off",\
         },
 
+#define PC_I440FX_1_1_MACHINE_OPTIONS \
+    PC_I440FX_1_2_MACHINE_OPTIONS
+
 static QEMUMachine pc_machine_v1_1 = {
-    PC_I440FX_1_2_MACHINE_OPTIONS,
+    PC_I440FX_1_1_MACHINE_OPTIONS,
     .name = "pc-1.1",
+    .init = pc_init_pci_1_2,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_1_1
         { /* end of list */ }
@@ -767,27 +785,35 @@ static QEMUMachine pc_machine_v1_1 = {
             .value    = "no",\
         },
 
+#define PC_I440FX_1_0_MACHINE_OPTIONS \
+    PC_I440FX_1_1_MACHINE_OPTIONS, \
+    .hw_version = "1.0"
+
 static QEMUMachine pc_machine_v1_0 = {
-    PC_I440FX_1_2_MACHINE_OPTIONS,
+    PC_I440FX_1_0_MACHINE_OPTIONS,
     .name = "pc-1.0",
+    .init = pc_init_pci_1_2,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_1_0
         { /* end of list */ }
     },
-    .hw_version = "1.0",
 };
 
 #define PC_COMPAT_0_15 \
         PC_COMPAT_1_0
 
+#define PC_I440FX_0_15_MACHINE_OPTIONS \
+    PC_I440FX_1_0_MACHINE_OPTIONS, \
+    .hw_version = "0.15"
+
 static QEMUMachine pc_machine_v0_15 = {
-    PC_I440FX_1_2_MACHINE_OPTIONS,
+    PC_I440FX_0_15_MACHINE_OPTIONS,
     .name = "pc-0.15",
+    .init = pc_init_pci_1_2,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_15
         { /* end of list */ }
     },
-    .hw_version = "0.15",
 };
 
 #define PC_COMPAT_0_14 \
@@ -818,14 +844,18 @@ static QEMUMachine pc_machine_v0_15 = {
             .value    = stringify(2),\
         },
 
+#define PC_I440FX_0_14_MACHINE_OPTIONS \
+    PC_I440FX_0_15_MACHINE_OPTIONS, \
+    .hw_version = "0.14"
+
 static QEMUMachine pc_machine_v0_14 = {
-    PC_I440FX_1_2_MACHINE_OPTIONS,
+    PC_I440FX_0_14_MACHINE_OPTIONS,
     .name = "pc-0.14",
+    .init = pc_init_pci_1_2,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_14
         { /* end of list */ }
     },
-    .hw_version = "0.14",
 };
 
 #define PC_COMPAT_0_13 \
@@ -853,17 +883,17 @@ static QEMUMachine pc_machine_v0_14 = {
         },
 
 #define PC_I440FX_0_13_MACHINE_OPTIONS \
-    PC_I440FX_1_2_MACHINE_OPTIONS, \
-    .init = pc_init_pci_no_kvmclock
+    PC_I440FX_0_14_MACHINE_OPTIONS, \
+    .hw_version = "0.13"
 
 static QEMUMachine pc_machine_v0_13 = {
     PC_I440FX_0_13_MACHINE_OPTIONS,
     .name = "pc-0.13",
+    .init = pc_init_pci_no_kvmclock,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_13
         { /* end of list */ }
     },
-    .hw_version = "0.13",
 };
 
 #define PC_COMPAT_0_12 \
@@ -890,14 +920,18 @@ static QEMUMachine pc_machine_v0_13 = {
             .value    = "1",\
         },
 
+#define PC_I440FX_0_12_MACHINE_OPTIONS \
+    PC_I440FX_0_13_MACHINE_OPTIONS, \
+    .hw_version = "0.12"
+
 static QEMUMachine pc_machine_v0_12 = {
-    PC_I440FX_0_13_MACHINE_OPTIONS,
+    PC_I440FX_0_12_MACHINE_OPTIONS,
     .name = "pc-0.12",
+    .init = pc_init_pci_no_kvmclock,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_12
         { /* end of list */ }
     },
-    .hw_version = "0.12",
 };
 
 #define PC_COMPAT_0_11 \
@@ -920,14 +954,18 @@ static QEMUMachine pc_machine_v0_12 = {
             .value    = "0.11",\
         },
 
+#define PC_I440FX_0_11_MACHINE_OPTIONS \
+    PC_I440FX_0_12_MACHINE_OPTIONS, \
+    .hw_version = "0.11"
+
 static QEMUMachine pc_machine_v0_11 = {
-    PC_I440FX_0_13_MACHINE_OPTIONS,
+    PC_I440FX_0_11_MACHINE_OPTIONS,
     .name = "pc-0.11",
+    .init = pc_init_pci_no_kvmclock,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_11
         { /* end of list */ }
     },
-    .hw_version = "0.11",
 };
 
 #define PC_COMPAT_0_10 \
@@ -954,36 +992,46 @@ static QEMUMachine pc_machine_v0_11 = {
         .value    = "0.10",\
     },
 
+#define PC_I440FX_0_10_MACHINE_OPTIONS \
+    PC_I440FX_0_11_MACHINE_OPTIONS, \
+    .hw_version = "0.10"
+
 static QEMUMachine pc_machine_v0_10 = {
-    PC_I440FX_0_13_MACHINE_OPTIONS,
+    PC_I440FX_0_10_MACHINE_OPTIONS,
     .name = "pc-0.10",
+    .init = pc_init_pci_no_kvmclock,
     .compat_props = (GlobalProperty[]) {
         PC_COMPAT_0_10
         { /* end of list */ }
     },
-    .hw_version = "0.10",
 };
 
+#define ISAPC_MACHINE_OPTIONS \
+    PC_COMMON_MACHINE_OPTIONS, \
+    .desc = "ISA-only PC", \
+    .max_cpus = 1
+
 static QEMUMachine isapc_machine = {
-    PC_COMMON_MACHINE_OPTIONS,
+    ISAPC_MACHINE_OPTIONS,
     .name = "isapc",
-    .desc = "ISA-only PC",
     .init = pc_init_isa,
-    .max_cpus = 1,
     .compat_props = (GlobalProperty[]) {
         { /* end of list */ }
     },
 };
 
 #ifdef CONFIG_XEN
+#define XENFV_MACHINE_OPTIONS \
+    PC_COMMON_MACHINE_OPTIONS, \
+    .desc = "Xen Fully-virtualized PC", \
+    .max_cpus = HVM_MAX_VCPUS, \
+    .default_machine_opts = "accel=xen", \
+    .hot_add_cpu = pc_hot_add_cpu
+
 static QEMUMachine xenfv_machine = {
-    PC_COMMON_MACHINE_OPTIONS,
+    XENFV_MACHINE_OPTIONS,
     .name = "xenfv",
-    .desc = "Xen Fully-virtualized PC",
     .init = pc_xen_hvm_init,
-    .max_cpus = HVM_MAX_VCPUS,
-    .default_machine_opts = "accel=xen",
-    .hot_add_cpu = pc_hot_add_cpu,
 };
 #endif
 
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 0051666..196178e 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -424,16 +424,18 @@ static void pc_q35_init_1_4(MachineState *machine)
 #define PC_Q35_2_4_MACHINE_OPTIONS                      \
     PC_Q35_MACHINE_OPTIONS,                             \
     .default_machine_opts = "firmware=bios-256k.bin",   \
-    .default_display = "std"
+    .default_display = "std",                           \
+    .alias = "q35"
 
 static QEMUMachine pc_q35_machine_v2_4 = {
     PC_Q35_2_4_MACHINE_OPTIONS,
     .name = "pc-q35-2.4",
-    .alias = "q35",
     .init = pc_q35_init,
 };
 
-#define PC_Q35_2_3_MACHINE_OPTIONS PC_Q35_2_4_MACHINE_OPTIONS
+#define PC_Q35_2_3_MACHINE_OPTIONS \
+    PC_Q35_2_4_MACHINE_OPTIONS, \
+    .alias = NULL
 
 static QEMUMachine pc_q35_machine_v2_3 = {
     PC_Q35_2_3_MACHINE_OPTIONS,
@@ -445,7 +447,8 @@ static QEMUMachine pc_q35_machine_v2_3 = {
     },
 };
 
-#define PC_Q35_2_2_MACHINE_OPTIONS PC_Q35_2_3_MACHINE_OPTIONS
+#define PC_Q35_2_2_MACHINE_OPTIONS \
+    PC_Q35_2_3_MACHINE_OPTIONS
 
 static QEMUMachine pc_q35_machine_v2_2 = {
     PC_Q35_2_2_MACHINE_OPTIONS,
@@ -457,9 +460,9 @@ static QEMUMachine pc_q35_machine_v2_2 = {
     },
 };
 
-#define PC_Q35_2_1_MACHINE_OPTIONS                      \
-    PC_Q35_MACHINE_OPTIONS,                             \
-    .default_machine_opts = "firmware=bios-256k.bin"
+#define PC_Q35_2_1_MACHINE_OPTIONS \
+    PC_Q35_2_2_MACHINE_OPTIONS, \
+    .default_display = NULL
 
 static QEMUMachine pc_q35_machine_v2_1 = {
     PC_Q35_2_1_MACHINE_OPTIONS,
@@ -471,7 +474,8 @@ static QEMUMachine pc_q35_machine_v2_1 = {
     },
 };
 
-#define PC_Q35_2_0_MACHINE_OPTIONS PC_Q35_2_1_MACHINE_OPTIONS
+#define PC_Q35_2_0_MACHINE_OPTIONS \
+    PC_Q35_2_1_MACHINE_OPTIONS
 
 static QEMUMachine pc_q35_machine_v2_0 = {
     PC_Q35_2_0_MACHINE_OPTIONS,
@@ -483,7 +487,9 @@ static QEMUMachine pc_q35_machine_v2_0 = {
     },
 };
 
-#define PC_Q35_1_7_MACHINE_OPTIONS PC_Q35_MACHINE_OPTIONS
+#define PC_Q35_1_7_MACHINE_OPTIONS \
+    PC_Q35_2_0_MACHINE_OPTIONS, \
+    .default_machine_opts = NULL
 
 static QEMUMachine pc_q35_machine_v1_7 = {
     PC_Q35_1_7_MACHINE_OPTIONS,
@@ -495,7 +501,8 @@ static QEMUMachine pc_q35_machine_v1_7 = {
     },
 };
 
-#define PC_Q35_1_6_MACHINE_OPTIONS PC_Q35_MACHINE_OPTIONS
+#define PC_Q35_1_6_MACHINE_OPTIONS \
+    PC_Q35_MACHINE_OPTIONS
 
 static QEMUMachine pc_q35_machine_v1_6 = {
     PC_Q35_1_6_MACHINE_OPTIONS,
@@ -507,8 +514,11 @@ static QEMUMachine pc_q35_machine_v1_6 = {
     },
 };
 
+#define PC_Q35_1_5_MACHINE_OPTIONS \
+    PC_Q35_1_6_MACHINE_OPTIONS
+
 static QEMUMachine pc_q35_machine_v1_5 = {
-    PC_Q35_1_6_MACHINE_OPTIONS,
+    PC_Q35_1_5_MACHINE_OPTIONS,
     .name = "pc-q35-1.5",
     .init = pc_q35_init_1_5,
     .compat_props = (GlobalProperty[]) {
@@ -518,7 +528,7 @@ static QEMUMachine pc_q35_machine_v1_5 = {
 };
 
 #define PC_Q35_1_4_MACHINE_OPTIONS \
-    PC_Q35_1_6_MACHINE_OPTIONS, \
+    PC_Q35_1_5_MACHINE_OPTIONS, \
     .hot_add_cpu = NULL
 
 static QEMUMachine pc_q35_machine_v1_4 = {