Re: [PATCH] x86_64: fix problems due to use of "outb" to port 80 on some AMD64x2 laptops, etc.

[Andi Kleen]

"David P. Reed" <dpreed@xxxxxxxx> writes:
>
> i386 family fixes (completely parallel) were not included, considering
> that such machines might involve more risk of problems on legacy machines.

They're needed because lots of people fomr some reason still boot 32bit kernels
on 64bit machines.
> +#define __OUT(s, s1, x) \

> +__OUT1(s, x) __OUT2(s, s1, "w") } \
> + __OUT1(s##_p, x) __OUT2(s, s1, "w") udelay(_IOPORT_PAUSE_DELAY); } \

With the additional call this should be completely out of line now to save 
code size. Similar for the in variant.

-Andi

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