Re: [Qemu-devel] [PATCH v2 01/10] hw/boards: add struct CpuTopology to MachineState

[Alistair Francis]

On Mon, May 6, 2019 at 1:34 AM Like Xu <address@hidden> wrote:
>
> To remove usages of global smp variables arch by arch,
> a bisect friendly way is introduced to initialize struct
> CpuTopology with duplicate ones; no semantic changes.
>
> Suggested-by: Igor Mammedov <address@hidden>
> Suggested-by: Eduardo Habkost <address@hidden>
> Signed-off-by: Like Xu <address@hidden>

Reviewed-by: Alistair Francis <address@hidden>

Alistair


> ---
>  include/hw/boards.h | 15 +++++++++++++++
>  vl.c                |  5 +++++
>  2 files changed, 20 insertions(+)
>
> diff --git a/include/hw/boards.h b/include/hw/boards.h
> index 6f7916f..dc89c6d 100644
> --- a/include/hw/boards.h
> +++ b/include/hw/boards.h
> @@ -231,6 +231,20 @@ typedef struct DeviceMemoryState {
>  } DeviceMemoryState;
>
>  /**
> + * CpuTopology:
> + * @cpus: the number of logical processors on the machine
> + * @cores: the number of cores in one package
> + * @threads: the number of threads in one core
> + * @max_cpus: the maximum number of logical processors on the machine
> + */
> +typedef struct CpuTopology {
> +    unsigned int cpus;
> +    unsigned int cores;
> +    unsigned int threads;
> +    unsigned int max_cpus;
> +} CpuTopology;
> +
> +/**
>   * MachineState:
>   */
>  struct MachineState {
> @@ -272,6 +286,7 @@ struct MachineState {
>      const char *cpu_type;
>      AccelState *accelerator;
>      CPUArchIdList *possible_cpus;
> +    CpuTopology smp;
>      struct NVDIMMState *nvdimms_state;
>  };
>
> diff --git a/vl.c b/vl.c
> index d9fea0a..43fd247 100644
> --- a/vl.c
> +++ b/vl.c
> @@ -4099,6 +4099,11 @@ int main(int argc, char **argv, char **envp)
>
>      smp_parse(qemu_opts_find(qemu_find_opts("smp-opts"), NULL));
>
> +    current_machine->smp.cpus = smp_cpus;
> +    current_machine->smp.max_cpus = max_cpus;
> +    current_machine->smp.cores = smp_cores;
> +    current_machine->smp.threads = smp_threads;
> +
>      /* sanity-check smp_cpus and max_cpus against machine_class */
>      if (smp_cpus < machine_class->min_cpus) {
>          error_report("Invalid SMP CPUs %d. The min CPUs "
> --
> 1.8.3.1
>