On Fri, Mar 26, 2010 at 02:47:59AM +0000, Jamie Lokier wrote:

Christoffer Dall wrote:

quoted

quoted

quoted

We checkpoint whether the system is running with CONFIG_MMU or not and
require the same configuration for the system on which we restore the
process. It might be possible to allow something more fine-grained,
if it's worth the energy. Input on this item is also very welcome,
specifically from someone who knows the exact meaning of the end_brk
field.

Processes which run on MMU and non-MMU CPUs are unlikely to be
interchangable - the run time environments are quite different. ?I
think this is a sane check.

thanks.

It's possible in principle to run many non-MMU binaries on MMU
kernels, but I've never heard of anyone doing it.

FDPIC supports running the same binaries with or without MMU depending on
your ABI, it's not really that uncommon, even if it's mostly just used
for prototyping.