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Re: [Xen-devel] Re: 32/64-bit hypercall interface -- long long alignment

On Tuesday 04 October 2005 07:08, Andi Kleen wrote:
> There are some traps. e.g. i386 has a different alignment for u64 (4
> bytes) rather than the natural 8 bytes used on 64bits which causes
> many problems (like the iptables issue mentioned above). If you use
> this way use a new type which is long long
> __attribute__((aligned(8))), not just long long.

Good to know! Thanks for the warning...

Hollis Blanchard
IBM Linux Technology Center

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