On Wed, 19 Nov 2025 at 12:46, Alexandre Courbot <[email protected]> wrote:
>
> On Wed Nov 19, 2025 at 10:46 AM JST, John Hubbard wrote:
> > On 11/6/25 2:24 PM, John Hubbard wrote:
> >> On 11/6/25 6:44 AM, Timur Tabi wrote:
> >>> On Wed, 2025-11-05 at 19:54 -0800, John Hubbard wrote:
> >>>>       let hal = match chipset {
> >>>> -        GA102 | GA103 | GA104 | GA106 | GA107 | GH100 | AD102 | AD103 | 
> >>>> AD104 | AD106 | AD107
> >>>> => {
> >>>> +        GA102 | GA103 | GA104 | GA106 | GA107 | GH100 | AD102 | AD103 | 
> >>>> AD104 | AD106 | AD107
> >>>> +        | GB100 | GB102 | GB202 | GB203 | GB205 | GB206 | GB207 => {
> >>>>               KBox::new(ga102::Ga102::<E>::new(), GFP_KERNEL)? as 
> >>>> KBox<dyn FalconHal<E>>
> >>>>           }
> >>>
> >>> Maybe combine patches 2 and 3?  Also, maybe this should be a range check, 
> >>> instead of listing
> >>> every since version?  It seems like everything past GA100 uses the GA102 
> >>> HAL.
> >>>
> >>
> >> Sure, I can combine the patches.
> >>
> >> I'm not sure why I've been wary of using ranges for these arch's.
> >> I'll try it out.
> >
> > Now I know. :)  Unlike C, Rust does *not* like it when we try to
> > treat enums as integers. Casting or other (messier) approaches are
> > required, and in no case is the end result a more readable on-screen
> > experience. At least not so far.
> >
> > It is possible to mix in Architecture (Turing, Ampere, etc) checks,
> > but I'm not sure that is worth the additional clutter.
> >
> > Maybe let's just do the long lists of chipsets for now...?
>
> Yeah, I've hit this issue as well. The compiler might remove that
> limitation in the future, or maybe we can craft a `chipset_range!()`
> macro that hides the messy casting, but this exhaustive listing also has
> the benefit of forcing us to consider every critical site whenever we
> support a new chipset so I'm actually not too bothered by it.

I wrote some macros in my nova-core-experiments, had
chipset_before/after/range I think

Dave.

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