Re: [PATCH v4 1/2] xen: EXPERT clean-up and introduce UNSUPPORTED

[Ian Jackson <iwj@xxxxxxxxxxxxxx>]

Jan Beulich writes ("Re: [PATCH v4 1/2] xen: EXPERT clean-up and introduce 
UNSUPPORTED"):
> On 26.01.2021 12:17, Bertrand Marquis wrote:
> > Maybe something we could explain more clearly in the UNSUPPORTED/EXPERT
> > config parameters instead ?
> > We could also make that more clear in the help of such parameters directly.
> > 
> > I do not see how we could make that more clear directly in the prompt (as
> > making it too long is not a good solution).
> 
> My main request is that such tags be added only if there's
> absolutely no ambiguity. Anything else (requiring longer
> explanations in many cases) should be expressed in the help
> text of the option, or in yet other ways (a referral to
> SUPPORT.md comes to mind).

Is

>>>>> + bool "Harden the branch predictor against aliasing attacks (disabling 
>>>>> UNSUPPORTED)" if UNSUPPORTED

too long ?

Ian.