http://lkml.indiana.edu/hypermail/linux/kernel/1002.2/01983.html

I see this thread discussing a similar issue where the main question is unanswered. Is it just a case of the Kconfig option not being there? Is there any other way by which I can run 32-bit binaries on a 64 bit UML kernel? 

Thanks. 

On Sun, Aug 14, 2011 at 7:52 AM, richard -rw- weinberger <richard.weinberger@gmail.com> wrote:
On Sat, Aug 13, 2011 at 6:42 PM, Aniruddha Laud
> Is there any particular reason as to why UML doesn't have this while Linux
> on hardware does? Thanks.

Not really.
Nobody implemented it jet. :-)

--
Thanks,
//richard