Attention is currently required from: Arthur Heymans, Dinesh Gehlot, Eran Mitrani, Kapil Porwal, Nick Vaccaro, Tarun.

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• Commit Message:

  • Patch Set #2, Line 11:

    indicating to the OS that S3
    suspend is the preferred sleep method.
    

    The description for the flag is:

    A one informs OSPM that the platform is able to
    achieve power savings in S0 similar to or better
    than those typically achieved in S3. In effect,
    when this bit is set it indicates that the system
    will achieve no power benefit by making a sleep
    transition to S3.

    which I read as "tell the OS to prefer modern suspend over S3".

    If you don't set it the OS cannot suspend that way.

    Windows probably has no means to control which is used, but Linux can override which is used by `/sys/power/mem_sleep`. But Linux also seems to always claim s2idle support, even when `s0ix_enable` is not set, so I'm not sure how it's determining that.

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