Re: UML broken - runaway loop modprobe binfmt-464c

From: Adam Nielsen
Date: Sat Feb 20 2010 - 22:00:35 EST

So you are using 32-bit modprobe binary and 64-bit kernel?

This will not work, since kernel binfmt_elf module checks
if e_machine is EM_X86_64.

Not just 32-bit modprobe - any 32-bit binary on a 64-bit UML will
cause this, I think.

Thanks for the suggestions. After some more investigation and off-list pointers, it seems the problem is caused because compiling UML for x86_64 doesn't allow you to enable IA32 emulation.

Is this just a case of the Kconfig option being missed, or is there a more fundamental reason as to why, unlike with the Linux kernel, it's not possible to run 32-bit apps inside a 64-bit UML?

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