Re: [v3] x86/tsc: Unset TSC_KNOWN_FREQ and TSC_RELIABLE flags on Intel Bay Trail SoC

[Thomas Gleixner]

Hans,

Hans de Goede <hdegoede@xxxxxxxxxx> writes:

> Hi,
>
> Sorry for top posting, but this is a long and almost unreadable thread ...
>
> So it seems to me that a better fix would be to change the freq_desc_byt struct from:
>
> static const struct freq_desc freq_desc_byt = {
>          1, { 83300, 100000, 133300, 116700, 80000, 0, 0, 0 }
> };
>
> to:
>
> static const struct freq_desc freq_desc_byt = {
>          1, { 83333, 100000, 133300, 116700, 80000, 0, 0, 0 }
> };
>
> That should give us the right TSC frequency without needing to mess with
> the TSC_KNOWN_FREQ and TSC_RELIABLE flags.

Where does that number come from? Just math?

Thanks,

        tglx