[PATCH v1 4/5] powerpc/44x: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')

[Arnd Bergmann]

On Mon, Jul 11, 2022 at 4:19 PM Christophe Leroy
<christophe.leroy at csgroup.eu> wrote:
> @@ -183,6 +183,18 @@ config 405_CPU
>         bool "40x family"
>         depends on 40x
>
> +config 440_CPU
> +       bool "440 (44x family)"
> +       depends on 44x
> +
> +config 464_CPU
> +       bool "464 (44x family)"
> +       depends on 44x
> +
> +config 476_CPU
> +       bool "476 (47x family)"
> +       depends on PPC_47x

Is there any value in building for -mcpu=440 or -mcpu=464 when targeting a 476?
Maybe add another !PPC_47x dependency for the first two. Ideally we would also
enforce that 440/464 based boards cannot be selected together with 476, though
I guess that is a separate issue.

Is there a practical difference between 440 and 464 when building kernels?
gcc seems to treat them the same way, so maybe one option for both is enough
here.

     Arnd