machine: Make -machine opts properties of MachineState

Make machine's QemuOpts QOM properties of /machine. The properties
are automatically filled in. This opens the possibility to create
opts per machine rather than global.
Signed-off-by: NMarcel Apfelbaum <marcel.a@redhat.com>
Acked-by: NMichael S. Tsirkin <mst@redhat.com>
Acked-by: NMichael Roth <mdroth@linux.vnet.ibm.com>
Signed-off-by: NAndreas Färber <afaerber@suse.de>

hw/core/machine.c

@@ -11,6 +11,284 @@
  */
 
 #include "hw/boards.h"
+#include "qapi/visitor.h"
+
+static char *machine_get_accel(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->accel);
+}
+
+static void machine_set_accel(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->accel = g_strdup(value);
+}
+
+static bool machine_get_kernel_irqchip(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return ms->kernel_irqchip;
+}
+
+static void machine_set_kernel_irqchip(Object *obj, bool value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->kernel_irqchip = value;
+}
+
+static void machine_get_kvm_shadow_mem(Object *obj, Visitor *v,
+                                       void *opaque, const char *name,
+                                       Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+    int64_t value = ms->kvm_shadow_mem;
+
+    visit_type_int(v, &value, name, errp);
+}
+
+static void machine_set_kvm_shadow_mem(Object *obj, Visitor *v,
+                                       void *opaque, const char *name,
+                                       Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+    Error *error = NULL;
+    int64_t value;
+
+    visit_type_int(v, &value, name, &error);
+    if (error) {
+        error_propagate(errp, error);
+        return;
+    }
+
+    ms->kvm_shadow_mem = value;
+}
+
+static char *machine_get_kernel(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->kernel_filename);
+}
+
+static void machine_set_kernel(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->kernel_filename = g_strdup(value);
+}
+
+static char *machine_get_initrd(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->initrd_filename);
+}
+
+static void machine_set_initrd(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->initrd_filename = g_strdup(value);
+}
+
+static char *machine_get_append(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->kernel_cmdline);
+}
+
+static void machine_set_append(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->kernel_cmdline = g_strdup(value);
+}
+
+static char *machine_get_dtb(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->dtb);
+}
+
+static void machine_set_dtb(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->dtb = g_strdup(value);
+}
+
+static char *machine_get_dumpdtb(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->dumpdtb);
+}
+
+static void machine_set_dumpdtb(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->dumpdtb = g_strdup(value);
+}
+
+static void machine_get_phandle_start(Object *obj, Visitor *v,
+                                       void *opaque, const char *name,
+                                       Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+    int64_t value = ms->phandle_start;
+
+    visit_type_int(v, &value, name, errp);
+}
+
+static void machine_set_phandle_start(Object *obj, Visitor *v,
+                                       void *opaque, const char *name,
+                                       Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+    Error *error = NULL;
+    int64_t value;
+
+    visit_type_int(v, &value, name, &error);
+    if (error) {
+        error_propagate(errp, error);
+        return;
+    }
+
+    ms->phandle_start = value;
+}
+
+static char *machine_get_dt_compatible(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->dt_compatible);
+}
+
+static void machine_set_dt_compatible(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->dt_compatible = g_strdup(value);
+}
+
+static bool machine_get_dump_guest_core(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return ms->dump_guest_core;
+}
+
+static void machine_set_dump_guest_core(Object *obj, bool value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->dump_guest_core = value;
+}
+
+static bool machine_get_mem_merge(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return ms->mem_merge;
+}
+
+static void machine_set_mem_merge(Object *obj, bool value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->mem_merge = value;
+}
+
+static bool machine_get_usb(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return ms->usb;
+}
+
+static void machine_set_usb(Object *obj, bool value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->usb = value;
+}
+
+static char *machine_get_firmware(Object *obj, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    return g_strdup(ms->firmware);
+}
+
+static void machine_set_firmware(Object *obj, const char *value, Error **errp)
+{
+    MachineState *ms = MACHINE(obj);
+
+    ms->firmware = g_strdup(value);
+}
+
+static void machine_initfn(Object *obj)
+{
+    object_property_add_str(obj, "accel",
+                            machine_get_accel, machine_set_accel, NULL);
+    object_property_add_bool(obj, "kernel_irqchip",
+                             machine_get_kernel_irqchip,
+                             machine_set_kernel_irqchip,
+                             NULL);
+    object_property_add(obj, "kvm_shadow_mem", "int",
+                        machine_get_kvm_shadow_mem,
+                        machine_set_kvm_shadow_mem,
+                        NULL, NULL, NULL);
+    object_property_add_str(obj, "kernel",
+                            machine_get_kernel, machine_set_kernel, NULL);
+    object_property_add_str(obj, "initrd",
+                            machine_get_initrd, machine_set_initrd, NULL);
+    object_property_add_str(obj, "append",
+                            machine_get_append, machine_set_append, NULL);
+    object_property_add_str(obj, "dtb",
+                            machine_get_dtb, machine_set_dtb, NULL);
+    object_property_add_str(obj, "dumpdtb",
+                            machine_get_dumpdtb, machine_set_dumpdtb, NULL);
+    object_property_add(obj, "phandle_start", "int",
+                        machine_get_phandle_start,
+                        machine_set_phandle_start,
+                        NULL, NULL, NULL);
+    object_property_add_str(obj, "dt_compatible",
+                            machine_get_dt_compatible,
+                            machine_set_dt_compatible,
+                            NULL);
+    object_property_add_bool(obj, "dump-guest-core",
+                             machine_get_dump_guest_core,
+                             machine_set_dump_guest_core,
+                             NULL);
+    object_property_add_bool(obj, "mem-merge",
+                             machine_get_mem_merge, machine_set_mem_merge, NULL);
+    object_property_add_bool(obj, "usb", machine_get_usb, machine_set_usb, NULL);
+    object_property_add_str(obj, "firmware",
+                            machine_get_firmware, machine_set_firmware, NULL);
+}
+
+static void machine_finalize(Object *obj)
+{
+    MachineState *ms = MACHINE(obj);
+
+    g_free(ms->accel);
+    g_free(ms->kernel_filename);
+    g_free(ms->initrd_filename);
+    g_free(ms->kernel_cmdline);
+    g_free(ms->dtb);
+    g_free(ms->dumpdtb);
+    g_free(ms->dt_compatible);
+    g_free(ms->firmware);
+}
 
 static const TypeInfo machine_info = {
     .name = TYPE_MACHINE,
@@ -18,6 +296,8 @@ static const TypeInfo machine_info = {
     .abstract = true,
     .class_size = sizeof(MachineClass),
     .instance_size = sizeof(MachineState),
+    .instance_init = machine_initfn,
+    .instance_finalize = machine_finalize,
 };
 
 static void machine_register_types(void)

include/hw/boards.h

@@ -114,9 +114,9 @@ struct MachineState {
 
     ram_addr_t ram_size;
     const char *boot_order;
-    const char *kernel_filename;
-    const char *kernel_cmdline;
-    const char *initrd_filename;
+    char *kernel_filename;
+    char *kernel_cmdline;
+    char *initrd_filename;
     const char *cpu_model;
 };
 

vl.c

@@ -4220,6 +4220,13 @@ int main(int argc, char **argv, char **envp)
         exit(0);
     }
 
+    machine_opts = qemu_get_machine_opts();
+    if (qemu_opt_foreach(machine_opts, object_set_property, current_machine,
+                         1) < 0) {
+        object_unref(OBJECT(current_machine));
+        exit(1);
+    }
+
     configure_accelerator(machine_class);
 
     if (qtest_chrdev) {
@@ -4264,6 +4271,7 @@ int main(int argc, char **argv, char **envp)
 
     if (!kernel_cmdline) {
         kernel_cmdline = "";
+        current_machine->kernel_cmdline = (char *)kernel_cmdline;
     }
 
     linux_boot = (kernel_filename != NULL);
@@ -4428,9 +4436,6 @@ int main(int argc, char **argv, char **envp)
 
     current_machine->ram_size = ram_size;
     current_machine->boot_order = boot_order;
-    current_machine->kernel_filename = kernel_filename;
-    current_machine->kernel_cmdline = kernel_cmdline;
-    current_machine->initrd_filename = initrd_filename;
     current_machine->cpu_model = cpu_model;
 
     machine_class->init(current_machine);