On Mon, Nov 09, 2015 at 01:59:02PM -0600, gratian.cri...@ni.com wrote:

> The Intel Xeon E5 processor family suffers from errata[1] BT81:

> +#ifdef CONFIG_X86_TSC
> +     /*
> +      * Xeon E5 BT81 errata: TSC is not affected by warm reset.
> +      * The TSC registers for CPUs other than CPU0 are not cleared by a warm
> +      * reset resulting in a constant offset error.
> +      */
> +     if ((c->x86 == 6) && (c->x86_model == 0x3f))
> +             set_cpu_bug(c, X86_BUG_TSC_OFFSET);
> +#endif

That's hardly a family, that's just one, Haswell server.

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