Re: [PATCH v2 3/6] x86/time: implement tsc as clocksource

[Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>]

>  static void tsc_check_slave(void *unused)
> @@ -1437,6 +1515,20 @@ static int __init verify_tsc_reliability(void)
>          }
>      }
>  
> +    if ( !strcmp(opt_clocksource, "tsc") )

Pls also update xen-command-line.markdown 

> +    {
> +        if ( try_platform_timer(&plt_tsc) > 0 )
> +        {
> +            printk(XENLOG_INFO "Switched to Platform timer %s TSC\n",
> +                   freq_string(plt_src.frequency));
> +
> +            init_percpu_time();
> +
> +            init_timer(&calibration_timer, time_calibration, NULL, 0);
> +            set_timer(&calibration_timer, NOW() + EPOCH);
> +        }
> +    }
> +
>      return 0;
>  }
>  __initcall(verify_tsc_reliability);
> @@ -1476,6 +1568,7 @@ void __init early_time_init(void)
>      struct cpu_time *t = &this_cpu(cpu_time);
>      u64 tmp = init_pit_and_calibrate_tsc();
>  
> +    tsc_freq = tmp;
>      set_time_scale(&t->tsc_scale, tmp);
>      t->local_tsc_stamp = boot_tsc_stamp;
>  
> -- 
> 2.1.4
> 
> 
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