linux-kernel - Re: [PATCH] x86: fix cpu MHz reporting for AMD family 0x11

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Message-ID: <20080125124154.GA10871@elte.hu>
Date:	Fri, 25 Jan 2008 13:41:54 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Andreas Herrmann3 <andreas.herrmann3@....com>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] x86: fix cpu MHz reporting for AMD family 0x11


* Andreas Herrmann3 <andreas.herrmann3@....com> wrote:

> Fix cpu MHz reporting for AMD family 0x11 when powernow-k8 is 
> disabled.
> 
> Just adhere to the CONSTANT_TSC feature bit for AMD CPUs when deciding 
> whether cpu_khz needs calibration. The additional check for CPU family 
> is not needed and prevents calibration for future CPUs.

>  	cpu_khz = tsc_khz;
>  	if (cpu_has(&boot_cpu_data, X86_FEATURE_CONSTANT_TSC) &&
> -		boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
> -		boot_cpu_data.x86 == 16)
> +		(boot_cpu_data.x86_vendor == X86_VENDOR_AMD))
>  		cpu_khz = calculate_cpu_khz();

thanks Andreas, applied!

	Ingo
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