[Qemu-devel] [PATCH 19/21] add hot_add_cpu hook to QEMUMachine and export machine_args

[Igor Mammedov <imammedo@redhat.com>]

hot_add_cpu hook should be overriden by target that implements
cpu hot-add via cpu-add QMP command.

Make machine_args available to machine init code, it allows
to centralize cpu_model starage instead of adding target
specific globals to keep it.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
---
 include/hw/boards.h |    3 +++
 vl.c                |    6 +++++-
 2 files changed, 8 insertions(+), 1 deletions(-)

diff --git a/include/hw/boards.h b/include/hw/boards.h
index 425bdc7..de8f92a 100644
--- a/include/hw/boards.h
+++ b/include/hw/boards.h
@@ -18,6 +18,8 @@ typedef struct QEMUMachineInitArgs {
     const char *cpu_model;
 } QEMUMachineInitArgs;
 
+extern QEMUMachineInitArgs *machine_args;
+
 typedef void QEMUMachineInitFunc(QEMUMachineInitArgs *args);
 
 typedef void QEMUMachineResetFunc(void);
@@ -43,6 +45,7 @@ typedef struct QEMUMachine {
     GlobalProperty *compat_props;
     struct QEMUMachine *next;
     const char *hw_version;
+    void (*hot_add_cpu)(const int64_t id, Error **errp);
 } QEMUMachine;
 
 int qemu_register_machine(QEMUMachine *m);
diff --git a/vl.c b/vl.c
index 5612c33..6a612e6 100644
--- a/vl.c
+++ b/vl.c
@@ -179,6 +179,8 @@ int main(int argc, char **argv)
 #define MAX_VIRTIO_CONSOLES 1
 #define MAX_SCLP_CONSOLES 1
 
+QEMUMachineInitArgs *machine_args;
+
 static const char *data_dir[16];
 static int data_dir_idx;
 const char *bios_name = NULL;
@@ -4295,13 +4297,15 @@ int main(int argc, char **argv, char **envp)
                                  .kernel_cmdline = kernel_cmdline,
                                  .initrd_filename = initrd_filename,
                                  .cpu_model = cpu_model };
+    machine_args = &args;
+    current_machine = machine;
+
     machine->init(&args);
 
     cpu_synchronize_all_post_init();
 
     set_numa_modes();
 
-    current_machine = machine;
 
     /* init USB devices */
     if (usb_enabled(false)) {
-- 
1.7.1