Re: iptables not working with monolithic 2.6.26.5 kernel on ARM

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On Sunday 2008-10-05 09:24, Patrick McHardy wrote:
> Jan Engelhardt wrote:
>> You can change the XT_ALIGN macro in the
>> kernel/include/linux/netfilter/x_tables.h and
>> iptables/include/linux/netfilter/x_tables.h to read
>> 
>>  #ifndef roundup
>>  #define roundup(x, y) ((((x) + ((y) - 1)) / (y)) * (y))
>>  #endif
>>  #define XT_ALIGN(s) roundup(s, sizeof(uint64_t))
>> 
>> and try again. There might be more alignment issues hiding, so
>> don't expect it to fix it all in a magic whizz.
>
> An idea to avoid these problems in the future would be to change
> the kernel so it accepts stricter alignment than what we currently
> use and after a grace period (maybe 1-2 years) change XT_ALIGN in
> userspace so it starts using u64 or simply 8 byte alignment
> everywhere.

I'd rather be interested in what architectures actually have
alignof(uint64_t) == 4, besides the native ARM gcc that's used here.
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