Re: [PATCH] Add CONFIG for -mregparm=3

[Andrew Morton]

Andi Kleen <ak@xxxxxx> wrote:
>
>  I didn't make it the default because it will break all binary only
>  modules (although they can be fixed by adding a wrapper that 
>  calls them with "asmlinkage"). Actually it may be a good idea to 
>  make this default with 2.7.1 or somesuch.

yes, that is a hassle.  But for these sorts of gains, it's worth pursuing
it a bit further.

How _much_ of a hassle it will be I can not say - I'd be looking to vendors
to advise before merging this into mainline.

I changed your patch to make it dependent on CONFIG_EXPERIMENTAL.

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