[PATCH v1 4/5] powerpc/44x: Fix build failure with GCC 12 (unrecognized opcode: `wrteei')
Christophe Leroy
christophe.leroy at csgroup.eu
Tue Jul 12 01:49:22 AEST 2022
Oops, I wanted to include Pali and Segher when I sent the series, I
prepared a script including them but used the wrong script at the end.
Le 11/07/2022 à 17:05, Arnd Bergmann a écrit :
> 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?
No idea, maybe not.
> 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.
Yes can do that.
By the way, 440/464 boards get excluded from kernel/cputable.c when 47x
is selected
>
> 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.
>
I don't know.
Christophe
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