Re: [tip:x86/mce] x86/bitops: Move BIT_64() for a wider use

[H. Peter Anvin]

On 05/23/2012 09:40 AM, Linus Torvalds wrote:
> On Wed, May 23, 2012 at 9:19 AM, Borislav Petkov
> <borislav.petkov@xxxxxxx> wrote:
>>
>> Actually we need a BIT() macro that works both
>> on 32- and 64-bit. But that won't be that easy:
> 
> We could use __builtin_choose_expr(), but that *only* works with constants.
> 

And it doesn't work in assembly.  However, I really question the assumption.

	-hpa


-- 
H. Peter Anvin, Intel Open Source Technology Center
I work for Intel.  I don't speak on their behalf.

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/