[PATCH v6 1/7] bits: split the definition of the asm and non-asm GENMASK()

Vincent Mailhol mailhol.vincent at wanadoo.fr
Sat Mar 8 09:10:25 UTC 2025


On 08/03/2025 at 02:42, Andy Shevchenko wrote:
> On Sat, Mar 08, 2025 at 01:48:48AM +0900, Vincent Mailhol via B4 Relay wrote:
>> From: Vincent Mailhol <mailhol.vincent at wanadoo.fr>
>>
>> In an upcoming change, GENMASK() and its friends will indirectly
>> depend on sizeof() which is not available in asm.
>>
>> Instead of adding further complexity to __GENMASK() to make it work
>> for both asm and non asm, just split the definition of the two
>> variants.
> 
> ...
> 
>> -/*
>> - * BUILD_BUG_ON_ZERO is not available in h files included from asm files,
>> - * disable the input check if that is the case.
>> - */
> 
>> +/*
>> + * BUILD_BUG_ON_ZERO() is not available in h files included from asm files, so
>> + * no input checks in assembly.
>> + */
> 
> In case of a new version I would reformat this as
> 
> /*
>  * BUILD_BUG_ON_ZERO() is not available in h files included from asm files,
>  * so no input checks in assembly.
>  */
> 
> It makes easier to review the changes and see that the first line is kept
> the same.

Not fully convinced, but why not. I staged this change locally, it will
be in v7.


Yours sincerely,
Vincent Mailhol



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