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RE: [Xen-devel] Re: [PATCH] CPUIDLE: revise tsc-save/restore to avoid big tsc skew between cpus

>From: Tian, Kevin
>Sent: Friday, December 05, 2008 6:00 PM
>Then if we agree always aligning TSC to absolute platform timer
>counter, it doesn't make difference to use cpu_khz or local tsc_scale
>since both are using scale factor calculated within a small period
>to represent the underlying crystal frequency.

Let me hold back above words. As you said, cpu_khz has lower accuracy
by cutting down lowest bits.

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