Re: [Xen-devel] [PATCH v3 1/3] x86: Allow limiting the max C-state sub-state

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 07.07.14 at 17:14, <ross.lagerwall@xxxxxxxxxx> wrote:
> max_csubstate is implemented in the same way as max_cstate.  However, 
> given the states in the Bay Trail patch (specifically C6N-BYT and 
> C6S-BYT), this is clearly insufficient.
> How do you think max_csubstate should limit the substate? Should it be 
> something like a max_csubstate = 2 permits the first and second substates?

It's not at all clear to me how to properly translate the CPU internal
state identifiers to/from command line option values, in a forward
compatible manner.

Jan


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