Hi,

On Fri, 26 Feb 2016 09:44:00 -0800 "H. Peter Anvin" <h...@zytor.com> wrote:
>
> 
> __u64 is okay, "unsigned long" is really messy in the presence of 32-on-64 
> bit ABIs...

Yeah, but unfortunately, any 64 bit scalar type here will change the
alignment of the enclosing unions on (some) 32 bit platforms and thus
break the ABI.

-- 
Cheers,
Stephen Rothwell

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