Re: [PATCH v3 1/8] s390/sclp: get machine once during read scp/cpu info

[Janosch Frank]

On 6/19/20 12:22 AM, Collin Walling wrote:
> Functions within read scp/cpu info will need access to the machine
> state. Let's make a call to retrieve the machine state once and
> pass the appropriate data to the respective functions.
> 
> Signed-off-by: Collin Walling <walling@linux.ibm.com>
> Reviewed-by: David Hildenbrand <david@redhat.com>
> Reviewed-by: Thomas Huth <thuth@redhat.com>

Reviewed-by: Janosch Frank <frankja@linux.ibm.com>

> ---
>  hw/s390x/sclp.c | 8 ++++----
>  1 file changed, 4 insertions(+), 4 deletions(-)
> 
> diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
> index 20aca30ac4..7875334037 100644
> --- a/hw/s390x/sclp.c
> +++ b/hw/s390x/sclp.c
> @@ -49,9 +49,8 @@ static inline bool sclp_command_code_valid(uint32_t code)
>      return false;
>  }
>  
> -static void prepare_cpu_entries(SCLPDevice *sclp, CPUEntry *entry, int 
> *count)
> +static void prepare_cpu_entries(MachineState *ms, CPUEntry *entry, int 
> *count)
>  {
> -    MachineState *ms = MACHINE(qdev_get_machine());
>      uint8_t features[SCCB_CPU_FEATURE_LEN] = { 0 };
>      int i;
>  
> @@ -77,7 +76,7 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
>      IplParameterBlock *ipib = s390_ipl_get_iplb();
>  
>      /* CPU information */
> -    prepare_cpu_entries(sclp, read_info->entries, &cpu_count);
> +    prepare_cpu_entries(machine, read_info->entries, &cpu_count);
>      read_info->entries_cpu = cpu_to_be16(cpu_count);
>      read_info->offset_cpu = cpu_to_be16(offsetof(ReadInfo, entries));
>      read_info->highest_cpu = cpu_to_be16(machine->smp.max_cpus - 1);
> @@ -132,10 +131,11 @@ static void read_SCP_info(SCLPDevice *sclp, SCCB *sccb)
>  /* Provide information about the CPU */
>  static void sclp_read_cpu_info(SCLPDevice *sclp, SCCB *sccb)
>  {
> +    MachineState *machine = MACHINE(qdev_get_machine());
>      ReadCpuInfo *cpu_info = (ReadCpuInfo *) sccb;
>      int cpu_count;
>  
> -    prepare_cpu_entries(sclp, cpu_info->entries, &cpu_count);
> +    prepare_cpu_entries(machine, cpu_info->entries, &cpu_count);
>      cpu_info->nr_configured = cpu_to_be16(cpu_count);
>      cpu_info->offset_configured = cpu_to_be16(offsetof(ReadCpuInfo, 
> entries));
>      cpu_info->nr_standby = cpu_to_be16(0);
>

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