Re: [PATCH v3] xen: EXPERT clean-up and introduce UNSUPPORTED

[Stefano Stabellini <sstabellini@xxxxxxxxxx>]

On Mon, 25 Jan 2021, Jan Beulich wrote:
> On 23.01.2021 03:19, Stefano Stabellini wrote:
> > --- a/xen/Kconfig
> > +++ b/xen/Kconfig
> > @@ -34,8 +34,15 @@ config DEFCONFIG_LIST
> >     option defconfig_list
> >     default ARCH_DEFCONFIG
> >  
> > +config UNSUPPORTED
> > +   bool "Configure UNSUPPORTED features"
> > +   help
> > +     This option allows certain unsupported Xen options to be changed,
> > +     which includes non-security-supported, experimental, and tech
> > +     preview features as defined by SUPPORT.md.
> 
> And by implication anything not depending on UNSUPPORTED is
> supported? I didn't think this was the case (some unsupported
> code can't even be turned off via Kconfig), so I think this
> needs clarifying here, so we won't end up with people
> considering some feature supported which really isn't. That's
> irrespective of the reference to SUPPORT.md.

I'll clarify.


> >  config EXPERT
> > -   bool "Configure standard Xen features (expert users)"
> > +   bool "Configure EXPERT features"
> >     help
> >       This option allows certain base Xen options and settings
> >       to be disabled or tweaked. This is for specialized environments
> 
> I'd like to suggest to move UNSUPPORTED past this one, to
> then have that have "default EXPERT".

Sure, good idea.