Am 23.04.2013 10:29, schrieb Igor Mammedov:
> 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 <[email protected]>
> ---
> 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;
args is a stack variable, so making it global does not strike me as a
good idea... (I did have a patch to split main() in two at one time)
> + current_machine = machine;
> +
> machine->init(&args);
>
> cpu_synchronize_all_post_init();
>
> set_numa_modes();
>
> - current_machine = machine;
Did you look up why it was placed here? Eduardo?
I'm not strongly opinionated but I wonder whether we may want to leave
it after machine->init?
Andreas
>
> /* init USB devices */
> if (usb_enabled(false)) {
>
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