Is it true that all the embedded linux system must have a MMU?
 

Hi,

Is it true that in order for an embedded system to run Linux, the system must have an MMU (memory management unit)?

Thanks,
Dave Xu

Technically any linux requires a MMU but it does not have to be a physical device...

http://dmitry.gr/index.php?r=05.Proj...ux%20on%208bit

No. The MMU support is an option.

Now without MMU support, MOST of linux (and the drivers) will not work, but for extremely cut down kernels it should work.

When in doubt, read the kernel documentation. I'm sure there are other places MMU docs are mentioned. Clone the source and grep for MMU (e.g. grep -irl 'mmu' Documentation)