Re: [Qemu-devel] [PATCH v3 4/5] mc146818rtc: drop unnecessary '#ifdef TARGET_I386'

[Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>]

On 05/10/2017 05:32 AM, guangrong.xiao@xxxxxxxxx wrote:
> From: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxx>
>
> If the code purely depends on LOST_TICK_POLICY_SLEW, we can simply
> drop '#ifdef TARGET_I386' as only x86 can enable this tick policy
>
> Signed-off-by: Xiao Guangrong <xiaoguangrong@xxxxxxxxxxx>

Reviewed-by: Philippe Mathieu-Daudé <f4bug@xxxxxxxxx>

> ---
>  hw/timer/mc146818rtc.c | 16 +++-------------
>  1 file changed, 3 insertions(+), 13 deletions(-)
>
> diff --git a/hw/timer/mc146818rtc.c b/hw/timer/mc146818rtc.c
> index 9810bd5..104a26d 100644
> --- a/hw/timer/mc146818rtc.c
> +++ b/hw/timer/mc146818rtc.c
> @@ -112,7 +112,6 @@ static uint64_t get_guest_rtc_ns(RTCState *s)
>          guest_clock - s->last_update + s->offset;
>  }
>
> -#ifdef TARGET_I386
>  static void rtc_coalesced_timer_update(RTCState *s)
>  {
>      if (s->irq_coalesced == 0) {
> @@ -126,6 +125,7 @@ static void rtc_coalesced_timer_update(RTCState *s)
>      }
>  }
>
> +#ifdef TARGET_I386
>  static void rtc_coalesced_timer(void *opaque)
>  {
>      RTCState *s = opaque;
> @@ -198,7 +198,6 @@ periodic_timer_update(RTCState *s, int64_t current_time, uint32_t old_period)
>              assert(lost_clock >= 0);
>          }
>
> -#ifdef TARGET_I386
>          /*
>           * recalculate the coalesced irqs for two reasons:
>           *    a) the lost_clock is more that a period, i,e. the timer
> @@ -233,9 +232,7 @@ periodic_timer_update(RTCState *s, int64_t current_time, uint32_t old_period)
>                            s->irq_coalesced, old_period, s->period);
>                  rtc_coalesced_timer_update(s);
>              }
> -        } else
> -#endif
> -        {
> +        } else {
>             /*
>               * no way to compensate the interrupt if LOST_TICK_POLICY_SLEW
>               * is not used, we should make the time progress anyway.
> @@ -250,9 +247,7 @@ periodic_timer_update(RTCState *s, int64_t current_time, uint32_t old_period)
>                                           RTC_CLOCK_RATE) + 1;
>          timer_mod(s->periodic_timer, s->next_periodic_time);
>      } else {
> -#ifdef TARGET_I386
>          s->irq_coalesced = 0;
> -#endif
>          timer_del(s->periodic_timer);
>      }
>  }
> @@ -841,13 +836,11 @@ static int rtc_post_load(void *opaque, int version_id)
>          }
>      }
>
> -#ifdef TARGET_I386
>      if (version_id >= 2) {
>          if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
>              rtc_coalesced_timer_update(s);
>          }
>      }
> -#endif
>      return 0;
>  }
>
> @@ -904,11 +897,10 @@ static void rtc_notify_clock_reset(Notifier *notifier, void *data)
>      rtc_set_date_from_host(ISA_DEVICE(s));
>      periodic_timer_update(s, now, 0);
>      check_update_timer(s);
> -#ifdef TARGET_I386
> +
>      if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
>          rtc_coalesced_timer_update(s);
>      }
> -#endif
>  }
>
>  /* set CMOS shutdown status register (index 0xF) as S3_resume(0xFE)
> @@ -929,12 +921,10 @@ static void rtc_reset(void *opaque)
>
>      qemu_irq_lower(s->irq);
>
> -#ifdef TARGET_I386
>      if (s->lost_tick_policy == LOST_TICK_POLICY_SLEW) {
>          s->irq_coalesced = 0;
>          s->irq_reinject_on_ack_count = 0;		
>      }
> -#endif
>  }
>
>  static const MemoryRegionOps cmos_ops = {