Re: [PATCH 03/29] vl: extract validation of -smp to machine.c

[Igor Mammedov <imammedo@redhat.com>]

On Tue, 27 Oct 2020 14:21:18 -0400
Paolo Bonzini <pbonzini@redhat.com> wrote:

> Once smp_parse is done, the validation operates on the MachineState.
> There is no reason for that code to be in vl.c.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Tested-by: Igor Mammedov <imammedo@redhat.com>

> ---
>  hw/core/machine.c   | 23 +++++++++++++++++++++++
>  include/hw/boards.h |  1 +
>  softmmu/vl.c        | 20 ++------------------
>  3 files changed, 26 insertions(+), 18 deletions(-)
> 
> diff --git a/hw/core/machine.c b/hw/core/machine.c
> index c5e0e79e6d..baea4e8613 100644
> --- a/hw/core/machine.c
> +++ b/hw/core/machine.c
> @@ -1072,6 +1072,29 @@ MemoryRegion *machine_consume_memdev(MachineState *machine,
>      return ret;
>  }
>  
> +bool machine_smp_parse(MachineState *ms, QemuOpts *opts, Error **errp)
> +{
> +    MachineClass *mc = MACHINE_GET_CLASS(ms);
> +
> +    mc->smp_parse(ms, opts);
> +
> +    /* sanity-check smp_cpus and max_cpus against mc */
> +    if (ms->smp.cpus < mc->min_cpus) {
> +        error_setg(errp, "Invalid SMP CPUs %d. The min CPUs "
> +                   "supported by machine '%s' is %d",
> +                   ms->smp.cpus,
> +                   mc->name, mc->min_cpus);
> +        return false;
> +    } else if (ms->smp.max_cpus > mc->max_cpus) {
> +        error_setg(errp, "Invalid SMP CPUs %d. The max CPUs "
> +                   "supported by machine '%s' is %d",
> +                   current_machine->smp.max_cpus,
> +                   mc->name, mc->max_cpus);
> +        return false;
> +    }
> +    return true;
> +}
> +
>  void machine_run_board_init(MachineState *machine)
>  {
>      MachineClass *machine_class = MACHINE_GET_CLASS(machine);
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index a49e3a6b44..4537cfb5c6 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -26,6 +26,7 @@ OBJECT_DECLARE_TYPE(MachineState, MachineClass, MACHINE)
>  extern MachineState *current_machine;
>  
>  void machine_run_board_init(MachineState *machine);
> +bool machine_smp_parse(MachineState *ms, QemuOpts *opts, Error **errp);
>  bool machine_usb(MachineState *machine);
>  int machine_phandle_start(MachineState *machine);
>  bool machine_dump_guest_core(MachineState *machine);
> diff --git a/softmmu/vl.c b/softmmu/vl.c
> index b0ccfd750a..7f39ebdfee 100644
> --- a/softmmu/vl.c
> +++ b/softmmu/vl.c
> @@ -3971,24 +3971,8 @@ void qemu_init(int argc, char **argv, char **envp)
>          exit(0);
>      }
>  
> -    machine_class->smp_parse(current_machine,
> -        qemu_opts_find(qemu_find_opts("smp-opts"), NULL));
> -
> -    /* sanity-check smp_cpus and max_cpus against machine_class */
> -    if (current_machine->smp.cpus < machine_class->min_cpus) {
> -        error_report("Invalid SMP CPUs %d. The min CPUs "
> -                     "supported by machine '%s' is %d",
> -                     current_machine->smp.cpus,
> -                     machine_class->name, machine_class->min_cpus);
> -        exit(1);
> -    }
> -    if (current_machine->smp.max_cpus > machine_class->max_cpus) {
> -        error_report("Invalid SMP CPUs %d. The max CPUs "
> -                     "supported by machine '%s' is %d",
> -                     current_machine->smp.max_cpus,
> -                     machine_class->name, machine_class->max_cpus);
> -        exit(1);
> -    }
> +    machine_smp_parse(current_machine,
> +        qemu_opts_find(qemu_find_opts("smp-opts"), NULL), &error_fatal);
>  
>      if (mem_prealloc) {
>          char *val;