If you do not actually need to run any 32bits binaries on x86_64 you can
do: 

echo ':32bits:M:0:\x7fELF\x01::/bin/echo:' > /proc/sys/fs/binfmt_misc/register

This will make the kernel run /bin/echo filename instead of executing
the file whenever it sees a 32bit ELF binary.

Of course if you actually *need* to run some 32bits binaries this will
not help you. 

-- 
 - Terje
malmedal@usit.uio.no

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