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Intel DPTF Adaptive Policy Being Reverse Engineered For Better Linux Ultrabook Support

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  • Intel DPTF Adaptive Policy Being Reverse Engineered For Better Linux Ultrabook Support

    Phoronix: Intel DPTF Adaptive Policy Being Reverse Engineered For Better Linux Ultrabook Support

    One of the areas of Intel's Linux support that has been less than ideal is their handling of the Dynamic Platform and Thermal Framework (DPTF) for today's ultrabook. Intel has provided some support with a focus on Google's Chromium OS but it's less than complete and notably missing is support for the more advanced "adaptive policy", but that soon could change...

    http://www.phoronix.com/scan.php?pag...-Adaptive-2020

  • #2
    Why is Intel making us go through these hoops in order to support their tech correctly?

    Comment


    • #3
      "wider testing" is exactly what this news will achieve

      Comment


      • #4
        I don't get it, why use DPTF if you can do just tune you intel-rapl-mmio constraints for TDP and boost times? Also there is are intel p_statest for freq and other settings

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        • #5
          Originally posted by Shtirlic View Post
          I don't get it, why use DPTF if you can do just tune you intel-rapl-mmio constraints for TDP and boost times? Also there is are intel p_statest for freq and other settings
          'cause there's PECI (and the EC itself) and it will throttle your beloved ultrabook into oblivion no matter how hard you try to configure MSRs and MMIOs.

          Yeah, your big bad x86 CPU is just a coprocessor now. More and more things are becoming out of its control.

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          • #6
            Originally posted by intelfx View Post

            'cause there's PECI (and the EC itself) and it will throttle your beloved ultrabook into oblivion no matter how hard you try to configure MSRs and MMIOs.

            Yeah, your big bad x86 CPU is just a coprocessor now. More and more things are becoming out of its control.
            Looks quite unfotunate, next time we will have to online authorize for turbo boost ;(

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            • #7
              Originally posted by Shtirlic View Post

              Looks quite unfotunate, next time we will have to online authorize for turbo boost ;(
              Given that much of it is simply locked behind firmware... That's actually feasible

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              • #8
                Originally posted by remenic View Post
                Why is Intel making us go through these hoops in order to support their tech correctly?
                The WinTel cartel lives on....

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