Linus Torvalds wrote:
quoted text
>> 
> diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
> index 46af716..9bed5ca 100644
> --- a/arch/x86/kernel/tsc.c
> +++ b/arch/x86/kernel/tsc.c
> @@ -325,6 +325,10 @@ static struct notifier_block time_cpufreq_notifier_block = {
>  
>  static int __init cpufreq_tsc(void)
>  {
> +	if (!cpu_has_tsc)
> +		return 0;
> +	if (boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
> +		return 0;
>  	cpufreq_register_notifier(&time_cpufreq_notifier_block,
>  				CPUFREQ_TRANSITION_NOTIFIER);
>  	return 0;

I added this patch to x86/urgent.

	-hpa
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