Re: [PATCH] ARM: ep93xx: remove MaverickCrunch support

[Jerome Oufella <jerome.oufella@savoirfairelinux.com>]

On Aug 3, 2021, at 7:58 AM, Arnd Bergmann arnd@kernel.org wrote:

> On Tue, Aug 3, 2021 at 1:41 PM Martin Guy <martinwguy@gmail.com> wrote:
>>
>> I forward opinion from people currently producing and supporting EP93XX boards:
> 
> Thanks a lot for bringing them in. I definitely don't want to remove support for
> something that is actively being used, and we don't have to merge the patch
> if they currently rely on MaverickCrunch on older platforms.
> 
> It does sound however like Jerome's customers are using a normal (softfloat)
> Linus distro on EP93xx, rather than one using the original MaverickCrunch
> FPU instructions. There are no plans to discontinue EP93xx support, there
> is actually a good amount of recent work going into updating the platform.
> 
> Jerome, please let me know if I understood you correctly here. If your
> customers do rely on MaverickCrunch support in user space, I would
> leave that in the kernel for as long as ep93xx itself is supported, and instead
> require building support with the GNU assembler to avoid having to
> add support to the clang integrated assembler. If you don't know of anyone
> using MaverickCrunch, I would go ahead with my patch to remove kernel
> support.
> 
>      Arnd

Arnd,

You are correct on assuming usage of softfloat toolchains and not
using the MaverickCrunch unit. AFAIK, I am not aware of active users
of this FPU on recent setups.

 Jerome