Re: [PATCH v2 1/2] platform/x86: Add support for Uncore frequency control

[Yu Chen]

Hi Srinivas,
On Mon, Jan 13, 2020 at 11:59 AM Srinivas Pandruvada
<srinivas.pandruvada@xxxxxxxxxxxxxxx> wrote:
> +
> +/* Common function to set min/max ratios to be used by sysfs callbacks */
> +static int uncore_write_ratio(struct uncore_data *data, unsigned int input,
> +                             int set_max)
> +{
> +       int ret;
> +       u64 cap;
> +
> +       mutex_lock(&uncore_lock);
> +
> +       input /= UNCORE_FREQ_KHZ_MULTIPLIER;
> +       if (!input || input > 0x7F) {
> +               ret = -EINVAL;
> +               goto finish_write;
> +       }
> +
> +       rdmsrl(MSR_UNCORE_RATIO_LIMIT, cap);
Should it be rdmsrl_on_cpu()?

Thanks,
Chenyu